Search results

Filters

  • Journals
  • Authors
  • Keywords
  • Date
  • Type

Search results

Number of results: 63
items per page: 25 50 75
Sort by:
Download PDF Download RIS Download Bibtex

Abstract

Ultrasonic pulse echo technique was used to study cupric oxide (CuO) thin films. CuO thin films were prepared using sol gel technique. They were doped with Lithium (Li) (1%, 2% and 4%).

Thin films’ thickness (d) and band gap energy (Eg) were measured. In addition, elastic moduli (longitudinal (L), shear (G), bulk (K) and Young’s (E)) and Poisson’s ratio (v) were determined to estimate the microstructure properties of the prepared films.

The study ameliorated the used transducers to overcome their dead zone and beam scattering; wedges were developed. The results showed the effectiveness of these wedges. They enhanced transducers’ sensitivity by changing the dead zone, beam diameter, beam directivity and waves’ transmission.

Also, the study noted that Li doping caused the improvement of CuO thin films to be more useful in solar cell fabrication. Li-CuO thin films had narrower band gap. Thus, they acquired a high quantum yield for the excited carriers; also they gained more efficiency to absorb solar light.

Go to article

Authors and Affiliations

Barakat Mirham Abdallah Youssef
Download PDF Download RIS Download Bibtex

Abstract

This paper presents the results of experiments on metallization of plastic elements produced using 3D printing technology from the light-hardened resins. The obtained coatings were bimetallic (Cu/Ni). The first step of metallization was the electroless deposition of copper. The second one was electrodeposition of nickel on the previously prepared copper substrate. The parameters of 3D prints preparation and metallization processes were deeply investigated. The etching of plastics substrates and duration of electroless metallization of 3D prints by copper were analyzed. In the next step the influence of nickel electrodeposition time was investigated. The coating were analyzed by XRD method and morphology of surface was analyzed by scanning electron microscopy (SEM). The thickness of coatings was calculated based on mass differences and measured by using optical microscopy method. The optimal parameters for both processes were specified.
Go to article

Authors and Affiliations

R. Kowalik
D. Kutyła
A. Kwiecińska
P. Żabiński
K. Kołczyk
W. Zborowski
Download PDF Download RIS Download Bibtex

Abstract

In situ monitoring of the thickness of thin diamond films during technological processes is important because it allows better control of deposition time and deeper understanding of deposition kinetics. One of the widely used techniques is laser reflectance interferometry (LRI) which enables non-contact measurement during CVD deposition. The authors have built a novel LRI system with a 405 nm laser diode which achieves better resolution compared to the systems based on He-Ne lasers, as reported so far. The system was used for in situ monitoring of thin, microcrystalline diamond films deposited on silicon substrate in PA-CVD processes. The thickness of each film was measured by stylus profilometry and spectral reflectance analysis as a reference. The system setup and interferometric signal processing are also presented for evaluating the system parameters, i.e. measurement uncertainty, resolution and the range of measurable film thickness.

Go to article

Authors and Affiliations

Maciej Kraszewski
Robert Bogdanowicz
Download PDF Download RIS Download Bibtex

Abstract

Titanium nitride (TiN) is regarded as a potential biomaterial for blood-contact applications. TiN thin films were fabricated by pulsed

laser deposition with the Nd:YAG laser on biologically applied polyurethane. Transmission electron microscopy (TEM) study of 250 nm thick films revealed columnar structure. Such films were observed to be brittle, which led to crack formation and secondary nucleation of microcolumn. TEM studies showed a kinetic mechanism of growth (columnar) in films of 250 nm thickness. It was stated that thinner films were much smoother and uniform than the thicker ones, which could be associated with the surface diffusion mechanism to appear. In order to improve the coatings elasticity, the thickness was reduced to 50 nm, which limited the deposition mechanism operation to the early stage. TEM cross-section observation revealed elastic properties of thin films. A biological test showed that TiN surface film produced on polyurethane is characterized by good biocompatibility and decreased surface affinity for cell adhesion. Films of 0.25 and 0.5 1m thick of TiN were selected for theoretical finite element modelling (FEM) using ADINA program. The micro cracks formation predicted in simulation was verified by phenomena observed in microstructure examinations.

Go to article

Authors and Affiliations

R. Ebner
J.M. Lackner
W. Waldhauser
R. Major
E. Czarnowska
R. Kustosz
P. Lacki
B. Major
Download PDF Download RIS Download Bibtex

Abstract

The aim of the work was to obtain thin bismuth oxide films containing, at room temperature, the Bi1,5Er0,5O3 phase. This phase corresponds to the structure of the high-temperature δ-Bi2O3 phase, in pure bismuth oxide, characterized by the highest ionic conductivity of all known solid state ionic conductors. The high-temperature δ-Bi2O3 phase with the face centered cubic structure, in pure bismuth oxide, occurs only at temperature above 730°C.

Stabilization of the δ-Bi2O3 phase at room temperature was achieved by an addition of the erbium together with the employment of the Pulsed Laser Deposition (PLD) technique. The influence of an amount of Er alloying and the film thickness on surface morphology, microstructure, phase composition of thin films were investigated. The velocity of deposition of thin layers of bismuth stabilized with erbium in the PLD process using the Nd: YAG laser was about 0.5 nm/s.

The investigation results of erbium doped bismuth oxide thin films deposited onto (0001) oriented Al2O3 monocrystalline substrate are presented.

Thin films of uniform thickness, without cracks, and porosity were obtained. All deposited thin films (regardless of the film thickness or erbia (Er2O3) content) exhibited a columnar structure. In films stabilized with erbium, up to approx. 250 nm thickness, the columns have a diameter at the base from 25 to 75 nm. The columns densely and tightly fill the entire volume of the films. With increasing of the film thickness increases, porosity also significantly increases. In thin layers containing from 20 to 30 mole % Er2O3 the main identified phase at room temperature is Bi1.5Er0.5O3. It is similar to the defective fluorite-type structure, and belongs to the Fm-3m space group. This phase corresponds to the structure of the high-temperature δ-Bi2O3 phase in pure bismuth oxide.

Go to article

Authors and Affiliations

S. Kąc
G. Szwachta
Ł. Cieniek
T. Moskalewicz
Download PDF Download RIS Download Bibtex

Abstract

A series of copper oxide thin films were synthesized through direct current magnetron sputtering on glass and silicon substrates with various process parameters. Initially, optical microscopy images and their histograms were analyzed to determine the optical quality of the obtained layers and then histograms were created using Image Histogram Generator software. Next, the morphology, and cross-section and layer composition of the samples were evaluated. Finally, the transmission spectra of the thin films were recorded. Transmittance and reflection spectra of the UV–vis analysis were utilized to calculate the optical band gap, the extinction coefficient, and the absorption coefficient of the oxidized layers. Samples showed low transmittance (up to 40%) in the region of 400 to 1000 nm. The mean absorption coefficient varied from ~3 · 105 to ~6 · 105 1/cm and from ~2 · 105 to ~4 · 105 1/cm in the region of 2 eV to 3.5 eV. The extinction coefficient ranged from 0 to 0.11 in the region from 300 to 3000 nm. Reflectance of the samples was ~20% in the region of 1000 to 2500 nm and ranged from 20%-50% in the region of 1000 to 3000 nm. We verified the process parameters of the Cu2O structure to improve the quality as a buffer layer. On the basis of this preliminary analysis, we propose the most promising and future-oriented solutions in photovoltaic applications.

Go to article

Authors and Affiliations

P. Sawicka-Chudy
G. Wisz
M. Sibiński
M. Cholewa
P. Potera
Ł. Głowa
R. Pawełek
Download PDF Download RIS Download Bibtex

Abstract

A novel method for thermal diffusivity evolution of thin-film materials with pulsed Gaussian beam and infrared video is reported. Compared with common pulse methods performed in specialized labs, the proposed method implements a rapid on-line measurement without producing the off-centre detection error. Through mathematical deduction of the original heat conduction model, it is discovered that the area s, which is encircled by the maximum temperature curve rTMAX(θ), increases linearly over elapsed time. The thermal diffusivity is acquired from the growth rate of the area s. In this study, the off-centre detection error is avoided by performing the distance regularized level set evolution formulation. The area s was extracted from the binary images of temperature variation rate, without inducing errors from determination of the heat source centre. Thermal diffusivities of three materials, 304 stainless steel, titanium, and zirconium have been measured with the established on-line detection system, and the measurement errors are: −2.26%, −1.07%, and 1.61% respectively.

Go to article

Authors and Affiliations

Huilong Dong
Boyu Zheng
Feifan Chen
Download PDF Download RIS Download Bibtex

Abstract

The presented article is a report on progress in photovoltaic devices and material processing. A cadmium telluride solar cell as one of the most attractive option for thin-film polycrystalline cell constructions is presented. All typical manufacturing steps of this device, including recrystalisation and junction activation are explained. A new potential field of application for this kind of device - the BIPV (Building Integrated Photovoltaic) is named and discussed. All possible configuration options for this application, according to material properties and exploitation demands are considered. The experimental part of the presented paper is focused on practical implementation of the high- temperature polymer foil as the substrate of the newly designed device by the help of ICSVT (Isothermal Close Space Vapour Transport) technique. The evaluation of the polyester and polyamide foils according to the ICSVT/CSS manufacturing process parameters is described and discussed. A final conclusion on practical verification of these materials is also given.

Go to article

Authors and Affiliations

M. Sibińksi
Z. Lisik
Download PDF Download RIS Download Bibtex

Abstract

The film art of the Russian Empire, in the light of the current state of research, may not be completely terra incognita, and yet a number of issues on this topic still need to be elaborated and saved from oblivion. The subject of the present research are the lost or only partially preserved horror movies filmed in the country of the last tsar of Russia – Nicholas II. The author recalls the circumstances of the creation of specific films, as well as the critical reception of such productions as Vasily Goncharov’s Viy (1909), At Midnight in the Graveyard (1909/1910) by the same director, The Vampire Woman (1915) by Viatcheslav (Victor) Tourjansky or two films by Ladislas Starevich: The Portrait (1915) and another screen adaptation of Viy (1916?).
Go to article

Authors and Affiliations

Marcin Cybulski
1
ORCID: ORCID

  1. Lublin, Katolicki Uniwersytet Lubelski Jana Pawła II
Download PDF Download RIS Download Bibtex

Abstract

The purpose of this article is to show the contribution of fi lm in shaping of social imagination of Katyń crime in Poles’ minds. Author places described fi lms in the background of today’s knowledge.
Go to article

Authors and Affiliations

Tadeusz Lubelski
Download PDF Download RIS Download Bibtex

Abstract

Numerous films, especially reinterpretations of the Gospel, can be read as loci theologici. Nevertheless, it’s important to recognize that the commercially motivated interest of filmmakers has its theological consequences: a resulting challenge is the catechetical use of apocryphal films in the pastoral praxis of the Church. The paper recalls main documents of the Church, relating to the cinema, stressing the absence of official teaching on the cinema in the last 20 years. Films, produced with commercial motivation, are often kitsch; it’s a result of tendencies to gain the possibly large audiences and to fulfill their expectations. An analysis of selected films (e.g. The Passion of the Christ and Son of God) indicates that the kitschy audiovisual apocrypha, superficial, emotional and lacking of authenticity, become a false filmic transformation of the message of the Bible. The paper postulates the need of constructing a theology of film: its object could be audiovisual texts, which extra-ecclesial theologies influence religious imagination and thinking of the viewers.

Go to article

Authors and Affiliations

Ks. Marek Lis
Download PDF Download RIS Download Bibtex

Abstract

This paper employs the Cognitive Linguistics paradigm to argue that flirtation, especially verbal, may be interpreted as a phenomenon resulting from the working of two conceptual mechanisms, namely metaphor and metonymy. As far as the corpus of the present paper is concerned, the analysis is predominantly based on dialogues extracted from the film “Double Indemnity” (1944) directed by Billy Wilder.
Go to article

Authors and Affiliations

Agnieszka Grząśko
1

  1. University of Rzeszow
Download PDF Download RIS Download Bibtex

Abstract

Time-lapse imagery allows us to witness, first-hand, how plants grow and heal, sway in cyclical motions, and even “dance” in reaction to various environmental factors.
Go to article

Authors and Affiliations

Urszula Zajączkowska
1

  1. Department of Forest Botany, Warsaw University of Life Sciences (SGGW)
Download PDF Download RIS Download Bibtex

Abstract

The aim of this work was to produce a thin SnO2 film by a technique combining the sol-gel method and electrospinning from a solution based on polyvinylpyrrolidone and a tin chloride pentahydrate as a precursor. The spinning solution was subjected to an electrospinning process, and then the obtained nanofiber mats were calcined for 10 h at 500°C. Then, the scanning electron microscopy morphology analysis and chemical composition analysis by X-ray microanalysis of the manufactured thin film was performed. It was shown that an amorphous-crystalline layer formed by the SnO2 nanofiber network was obtained. Based on the UV-Vis spectrum, the width of the energy gap of the obtained layer was determined.

Go to article

Authors and Affiliations

W. Matysiak
T. Tański
W. Smok
S. Polishchuk
Download PDF Download RIS Download Bibtex

Abstract

Thin films of crystallized LaCoO3 were grown on Si substrate by Pulsed Laser Deposition at different temperatures (750°C, 850°C and 1000°C). The structural characterization of the LaCoO3 thin films was done by combining several techniques: Scanning Electron Microscopy (SEM), Atomic Force Microscope (AFM), Transmission Electron Microscopy (TEM) and Grazing Incidence X-Ray Diffraction (GIXRD). The thin films crystallized in the expected rhombohedral phase whatever the deposition temperature, with an increase of crystallite size from 70 nm at 750°C to 100 nm at 1000°C, and an average thickness of the thin films of less than 200 nm. At 850°C and 1000°C, the thin films are crack-free, and with a lower number of droplets than the film deposited at 750°C. The grains of LaCoO3 film deposited at 850°C are columnar, with a triangular termination. At 1000°C, an intermediate layer of La2Si2O7 was observed, indicating diffusion of Si into the deposited film.

Go to article

Authors and Affiliations

M. Jędrusik
Ł. Cieniek
A. Kopia
ORCID: ORCID
Ch. Turquat
Ch. Leroux
Download PDF Download RIS Download Bibtex

Abstract

The article is a review of the book by Natalie Zemon Davis Slaves on Screen. Film and Historical Vzsion, Cambridge Mass. 2000.
Go to article

Authors and Affiliations

Piotr Witek
Download PDF Download RIS Download Bibtex

Abstract

Indium gallium zinc oxide (In–Ga–Zn–O) thin films, which are transparent conductive films for liquid crystals and electroluminescent displays, were fabricated via singlestep sputter deposition using one target containing different proportions of indium oxide, gallium oxide, and zinc oxide powders. Experimental results suggest that the In–Ga–Zn–O thin films can be prepared using the method of single-step radio frequency (RF) sputter deposition, applying a powder target containing indium oxide, gallium oxide, and zinc oxide. The In–Ga–Zn–O thin films were prepared on Si substrates, and the deposition rate depended on the target composition. In these plasma processes, electron density and temperature were essentially independent of target composition. The prepared films were very smooth with a root-mean-square roughness of less than 10 nm. The crystallinity of the ZnO peak was observed in all the films; whereas the In and Ga peaks were not observed in the films prepared. The X-ray photoelectron spectroscopy of the films also revealed that the elemental concentration ratio of In–Ga–Zn–O thin films could be prepared using one target, and that can be easily controlled by ratios in the In 2O 3/Ga 2O 3/ZnO composition in the powder target. The transmittances were > 75% at 800 nm for all the target mixtures, and increased with increasing In 2O 3 in the powder target.
Go to article

Authors and Affiliations

Takahiko Satake
1
ORCID: ORCID
Hiroharu Kawasaki
2
Shin-Ichi Aoqiu
1

  1. Graduate School of Engineering Sojo University, Ikeda Nishi-ku Kumamoto City, Japan
  2. Department of Electrical and Electronic Engineering, National Institute of Technology, Sasebo College, Okishin-machi, Sasebo City, Nagasaki Pref., Japan
Download PDF Download RIS Download Bibtex

Abstract

This paper discusses the idea of combining a photovoltaic system with a heating film system to heat residential buildings. The analysis was performed for a newly built single-family house in Warsaw or its vicinity. The authors have selected the size of the photovoltaic installation, calculated the costs incurred by the user for the installation of a hybrid system, which were additionally compared to the cost of installing a gas installation (gas boiler) used for heating the building. The calculations were made for a single-family house with a usable area of 120 m2, the demand for utility energy for heating purposes in the newly built house was in the range of 10–50 kWh/m2/year. Based on the adopted parameters, the authors evaluated the economic efficiency of both investments (solutions) determining their net present values (NPV). The analysis takes the energy needed only for heating purposes into account.
NPV for a heating system with a gas boiler with an investment outlay EUR 8,000 for buildings purchased for utility energy in the amount of 20 kWh/m2/year and the price for natural gas EUR 0.04 /kWh will be EUR –10,500 (for 15 years, discount rate r = 3%). For the same thermal needs (energy required) of the building, NPV for heating films + photovoltaic (HF + PV) will amount to – EUR 8,100. Comparing the variants will get a EUR 2,400 higher NPV for HF + PV. With a utility energy demand for heating purpose of 50 kWh/m2/year and gas heating installation investment cost of EUR 7,000, the NPV for both variants will be equal for natural gas price = EUR 0.035/kWh.
Go to article

Bibliography

Chwieduk, D. 2009. Recommendation on modelling of solar energy incident on a building envelope. Renewable Energy 34(3), pp. 736–741.
Columbus Energy 2021. Photovoltaic. [Online] https://columbusenergy.pl/ [Accessed: 2021-02-15].
COM(2020) 562 final. Communication from the Commission to the European Parliament, the Council, the European Economic and Social Committee and the Committee of the Regions. Stepping up Europe’s 2030 climate ambition. Investing in a climate-neutral future for the benefit of our people. [Online] https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX%3A52020DC0562 [Accssessed: 2021- -05-14].
Gas boilers 2021. [Online] https://kotly.pl/kotly/ [Accessed: 2021-02-16].
Journal of Laws 2015, item 376. Ordinance of the Minister of Infrastructure and Development of February 27, 2015 On the methodology for determining the energy performance of a building or part of a building and energy performance certificates (Dz.U. 2015, poz. 376, Rozporządzenie Ministra Infrastruktury i Rozwoju z dnia 27 lutego 2015 r. W sprawie metodologii wyznaczania charakterystyki energetycznej budynku lub części budynku oraz świadectw charakterystyki energetycznej). Warszawa (in Polish).
JRC European Comission 2017. Photovoltaic Geographical Information System (PVGIS).
Koval et al. 2019a – Koval, V., Sribna, Y. and Gaska, K. 2019. Energy Cooperation Ukraine-Poland to Strengthen Energy Security. E3S Web of Conferences 132, DOI: 10.1051/e3sconf/201913201009.
Koval et al. 2019b – Koval, V., Sribna, Y., Mykolenko, O. and Vdovenko, N. 2019. Environmentalconcept of energy security solutions of local communities based on energy logistics. 19th International Multidisciplinary Scientific GeoConference SGEM 2019, 19(5.3), pp. 283–290, DOI: 10.5593/sgem2019/5.3/S21.036. Kryzia, D. and Pepłowska, M. 2019. The impact of measures aimed at reducing low-stack emission in Poland on the energy efficiency and household emission of pollutants. Polityka Energetyczna – Energy Policy Journal 22(2), pp. 121–132, DOI: 10.33223/epj/109912.
Kryzia et al. 2020 – Kryzia, D., Kopacz, M. and Kryzia, K. 2020. The Valuation of the Operational Flexibility of the Energy Investment Project Based on a Gas-Fired Power Plant. Energies 13(7), DOI: 10.3390/en13071567.
Matuszewska et al. 2017 – Matuszewska, D., Kuta, M. and Górski, J. 2017. Cogeneration – Development and prospect in Polish energy sector. E3S Web of Conferences 14, 01021, DOI: 10.1051/e3sconf/ 20171401021.
Ministry of Climate 2020. Ministry of Climate and Environment 2020. Poland’s energy policy until 2040 (Polityka energetyczna Polski do 2040 r.). [Online] https://www.gov.pl/web/klimat/minister- kurtyka-polityka-energetyczna-polski-do-2040-r-udziela-odpowiedzi-na-najwazniejsze-wyzwania- stojace-przed-polska-energetyka-w-najblizszych-dziesiecioleciach [Accessed: 2021-01-21] (in Polish).
Ministry of Development 2019. Typical Reference Year (Typowy rok referencyjny). [Online] https://archiwum.miir.gov.pl/strony/zadania/budownictwo/charakterystyka-energetyczna-budynkow/dane-do-obliczen-energetycznych-budynkow-1/ [Accessed: 2020-08-10] (in Polish).
Mirowski, T. and Sornek, K. 2015. Potential of prosumer power engineering in Poland by example of micro PV installation in private construction (Potencjał energetyki prosumenckiej w Polsce na przykładzie mikroinstalacji fotowoltaicznych w budownictwie indywidualnym). Polityka Energetyczna – Energy Policy Journal 18(2), pp. 73–84 (in Polish).
Natural Gas Price 2021. [Online] http://www.cena-pradu.pl/gaz.html [Accessed: 2021-02-15].
Shmygol et al. 2020 – Shmygol, N., Schiavone, F., Trokhymets, O., Pawliszczy, D., Koval, V., Zavgorodniy, R. and Vorfolomeiev, A. 2020. Model for assessing and implementing resource-efficient strategy of industry. CEUR Workshop Proceedings, 2713.
Szurlej et al. 2014 – Szurlej, A., Kamiński, J., Janusz, P., Iwicki, K. and Mirowski, T. 2014. Gas-fired power generation in Poland and energy security (Rozwój energetyki gazowej w Polsce a bezpieczeństwo energetyczne). Rynek Energii 6, pp. 33–38 (in Polish).
Tytko, R. 2019. Heating the building by foil and electrical matts (Ogrzewanie budynku za pomocą folii i mat elektrycznych). Aura 8, pp. 18–21 (in Polish).
Żelazna et al. 2020 – Żelazna, A., Gołębiowska, J., Zdyb, A. and Pawłowski, A. 2020. A hybrid vs. on-grid photovoltaic system: Multicriteria analysis of environmental, economic, and technical aspects in life cycle perspective. Energies 13(15), 3978, DOI: 10.3390/en13153978.
Go to article

Authors and Affiliations

Krystian Majchrzak
1 2
Monika Pepłowska
3
ORCID: ORCID
Piotr Olczak
1
ORCID: ORCID

  1. Mineral and Energy Economy Research Institute of the Polish Academy of Sciences, Kraków, Poland
  2. Instaway Institute, Warszawa, Poland
  3. Mineral and Energy Economy Research Institute, Polish Academy of Sciences, Kraków, Poland
Download PDF Download RIS Download Bibtex

Abstract

The film Bohdan Zynoviy Khmelnytsky by the Ukrainian director Mykola Mashchenko is little‑known in Poland. The director intended it to become a “bridge over the precipice” which divides both nations, but from the very beginning it was negatively perceived both by the audience and critics. The Ukrainian reception of Jerzy Hoffman’s With Fire and Sword, a movie referring to the same events from a common past, seems to be completely different entity. The work by the Polish artist remains of interest even twenty years after its release. The article is an attempt to determine the reasons for this situation. The author analyzes the artistic values of Mashchenko’s film, the characters’ performances and historiosophy, and, comparing those with Hoffman’s screening, looks for an answer to the question as to the motives for the contrasting reception of these films by Ukrainian society.
Go to article

Authors and Affiliations

Anastasiya Podlyuk
1
ORCID: ORCID

  1. Lublin, Uniwersytet Marii Curie‑Skłodowskiej
Download PDF Download RIS Download Bibtex

Abstract

Systematic attempts to maximise the efficiency of gas turbine units are achieved, among other possibilities, by increasing the temperature at the inlet to the expansion section. This requires additional technological solutions in advanced systems for cooling the blade rows with air extracted from the compressor section. This paper introduces a new mathematical model describing the expansion process of the working medium in the turbine stage with air film cooling. The model includes temperature and pressure losses caused by the mixing of cooling air in the path of hot exhaust gases. The improvement of the accuracy of the expansion process mathematical description, compared with the currently used models, is achieved by introducing an additional empirical coefficient estimating the distribution of the cooling air along the profile of the turbine blade. The new approach to determine the theoretical power of a cooled turbine stage is also presented. The model is based on the application of three conservation laws: mass, energy and momentum. The advantage of the proposed approach is the inclusion of variable thermodynamic parameters of the cooling medium. The results were compared with the simplified models used in the literature: separate Hartsel expansion, mainstream pressure, weighted-average pressure and fully reversible. The proposed model for expansion and the determination of theoretical power allows for accurate modelling of the performance of a cooled turbine stage under varying conditions.
Go to article

Authors and Affiliations

Paweł Trawiński
1

  1. Institute of Heat Engineering, Warsaw University of Technology, Nowowiejska 21/25, 00-665, Warsaw, Poland
Download PDF Download RIS Download Bibtex

Abstract

The paper presents the idea to improve the performance of thin film photovoltaic cells by a light capture enhancement through the introduction of down shifting energy converters. Luminescent down shifting layers convert high-energy photons (UV light) into low-energy ones (visible light), which are more efficient in a photovoltaic conversion. For this purpose, the application of a thin layer composed of zinc oxide (ZnO) nanoparticles deposited onto a thin film solar cell is proposed. The paper presents both experimental and theoretical results of this approach. Conducted investigations include an analysis of ZnO nanoparticle layers, deposited in two independent technology methods. The results showed that ZnO nanoparticles have a great potential of application as down converting layers and can be implemented to improve the efficiency of photovoltaic cells, especially in the field of thin film PV structures. The proposed new deposition method can potentially be used in some industrial photovoltaic applications.

Go to article

Authors and Affiliations

K. Znajdek
Maciej Sibiński
ORCID: ORCID
Z. Lisik
A. Apostoluk
Y. Zhu
B. Masenelli
P. Sędzicki

This page uses 'cookies'. Learn more