ResearchMaterials Technology and Structure of Electronic Technique
 
MATERIALS TECHNOLOGY AND STRUCTURE OF ELECTRONIC TECHNIQUE
 
 
RESEARCH AREAS AND ACTIVITIES
 
  • Investigation the possibilities of nano-structured solar cells fabrication on the base of semiconductor oxide films
  • Development of low temperature techniques of optimized CdTe nanoscale films and CdTe/CdS hetero-systems suitable for fabrication of efficient flexible solar cells
 
PRACTICAL APPLICATION OF RESEARCH RESULTS
 
Research outcomes include identification of physical mechanisms that define the efficiency of photovoltaic processes in thin film solar cells based on of CdS/CdTe heterostructures and Cu2O/ZnO oxide heterosystems, and a physically justified optimization of new design and technology solution for solar cells on different types of substrates that will serve as a basis for further development of manufacturing technology.
 
RESEARCH COLLABORATION
 
 
 
Country
University or Organization
Forms of cooperation
Research Activity, Topic
Status
1
Russia
A.F. Ioffe Physico-Technical Institute of the Russian Academy of Sciences
Joint research
Thermophotovoltaic thermal and solar power converter
Published co-authored papers in Russian and international journals
2
South Korea
Hanyang University, Department of Materials Science & Enginerring
Joint research
 
Study of structural and optical properties of nanoscale oxide films and the possibilities of creating optoelectronic devices on their basis
Co-authored reports at international conferences and published papers in international journals
3
Russia
Lebedev Physical Institute (LPI RAS)
Joint research
Creation and study of fluorescent composite glass coating
 Co-authored reports at international conferences and published papers in international journals
4
France
Aix Marseille Université, CNRS, CINaM UMR 7325, 13288, Marseille, France
Joint research
Study of  structural and optical properties of nanostructured oxide films
Co-authored reports at international conferences and published papers in international journals
5
France
Laboratoire LULI, Ecole Polytechnique, Palaiseau  CEDEX 91128
Joint research
Study of YAG single crystal growing with heterogeneous distribution of components and its impact on increase in laser production
Co-authored reports at international conferences and published papers in international journals
6
Russia
CJSC Concern “Nanoindustry”
Joint research
Study of impact of nanoparticles on bacterial growth
Co-authored reports at international conferences and published papers in international journals
7
Russia
Dubna State University
Joint research
 
Development of low temperature techniques of optimized CdTe/CdS heterosystems suitable for fabrication of  efficient flexible solar cells
Co-authored reports at international conferences and published papers in international journals
8
Russia
Kazan State Energy University
Joint research
Solid state thermal synthesis of new semiconductor compound CuGaO2 and study of its structural properties
Current research collaboration
 
 
PUBLICATIONS 2012-2016
 
  1. V.Gevorkyan, A.Reymers, M.Nersesyan, M.Arzakantsyan. Characterization of Cu2O thin films prepared by evaporation of CuO powder. Journal of Physics: Conference Series 350 (2012) 012027.
  2. M.Arzakantsyan, N.Ananyan, V.Gevorgyan et J.-C. Chanteloup.  Growth of large 90 mm diameter Yb:YAG single crystals with Bagdasarov method. Opt. Materials Express 2(9), pp. 1219-1225 (2012).
  3. M.Arzakantsyan, D.Albach, N.Ananyan, V.Gevorgyan et J.-C. Chanteloup. Yb3+:YAG crystal growth with controlled doping distribution. Opt. Materials Express 2(1), pp. 20-30 (2012).
  4. V.Bolshukhin, V.Gevorgyan, М.Kazaryan, М.Pogosyan, R.Mkhitaryan, S.Minasyan. Water resistant phosphor pitches of different structures. Proceedings of Symposium «Metal vapor lasers» (MVL-2012), September 24-28, Rostov-on-Don, 2012.
  5.  V.Gevorgyan, A.Reymers, A.Aleksanyan, М.Kazaryan. Investigation into the photoluminescence and structural characteristics of ZnO:Al films, obtained by sol-gel method. Proceedings of Symposium «Metal vapor lasers» (MVL-2012), September 24-28, Rostov-on-Don, 2012.
  6. K.Lee, J. Ahn, I.-S. Park, Anna Reymers, M. Arzakantsyan, V. Gevorgyan. Characterization of ZnO films deposited by sol-gel technique. Collaborative Conference on Crystal Growth (3CG), Orlando, Florida USA., Dec. 11-14, 2012.
  7. A. Reymers, V. Gevorgyan, A. Ranguis, D. Chaudanson, C. Fauquet, A. Karapetyan, W. Marine. The 13th edition of Trends in Nanotechnology International Conference (TNT2012) Madrid (Spain), September 10-14, 2012.
  8. A.Aleksanyan, V.Gevorgyan, М.Kazaryan. P-Si/n-ZnO diode heterostructures fabrication and investigation into their current-voltage curve.  International Scientific Journal for Alternative Energy and Ecology № 06 (128), стр. 23-27, 2013.
  9. V.Gevorkyan, S.Grigoryan, A.Arzumanyan, E.Beghloyan, N.Mangasaryan. Fabrication and study of organic photovoltaic cells based on the polymer/fullerene bulk heterojunction.  International Scientific Journal for Alternative Energy and Ecology № 06 (128), p.p. 49-54, 2013.
  10. V. Gevorgyan,  A. Reymers, K. Lee, J. Ahn, I.-S. Park. Structural and optical characterization of undoped ZnO films prepared  by sol-gel technique. Proceedings of the VIIth RAU Annual Research Conference, 2013.
  11. Jean-Cristophe Chanteloupe, Narine Ananyan, Vladimir Gevorgyan, Mikayel Arzakantsyan, United States, Patent Application Publication. Pub.No.: US 2014/0083351 A1, Pub. Date Mar.27, 2014, “Process for the growth of a crystalline solid, associated crystalline solid and device”.
  12. M.Abovyan, V.Bolshukhin, A.Buynovsky, S. Garelina, V.Gevorgyan, V.Zhek. Functional oxide materials based on rare metals and rare-earth metals, Monograph, «NTL Publishing», Tomsk, 2014.
  13. A. Karapetyan, A. Reymers, V. Gevorgyan, W. Marine  etc.  Cuprous oxide thin films prepared by thermal oxidation of copper layer. Morphological and optical properties.  Journal of Luminescence 159 (2015) 325–332.
  14. Zaruhi Vardanyan, Vladimir Gevorkyan, Michail Ananyan, Hrachik Vardapetyan and Armen Trchounian. Effects of various heavy metal nanoparticles on Enterococcus hirae and Escherichia coli growth and proton‑coupled membrane transport. Journal of Nanobiotechnology  (2015) 13:69,  p.1-9.
  15. G.S. Khripunov, A.V. Pirogov, D.А. Kudiy, R.V. Zaytsev, А.L. Khripunova, V.А. Gevorgyan, P.P. Gladishev. Effect of Nanosized Tin Oxide Layer on the Efficiency of Photovoltaic Processes in Film Solar Cells Based on Cadmium Telluride. Journal of nano- and electronic physics vol. 7 no 1, 01016(6pp) (2015).
  16. Gevorgyan, Vladimir; Reymers, Anna; Arzakantsyan, Mikayel; Lee, Kilbock; Ahn, Jinho; Park, In-Sung. Influence of Annealing Temperature on Structural and Optical Properties of Undoped and Al-Doped Nano-ZnO Films Prepared by Sol–Gel Method. Science of Advanced Materials, Volume 8, Number 4, 2016, pp. 878-883(6).
  17. V.А. Gevorgyan, V.L. Matukhin, A.N. Gavrilenko, O.I. Gnezdilov, S.O. Garkaviy.  Investigation of complex cupric oxides by NMR 63Cu technique. Renewable energy: All-Russian Scientific Conference with International participants and X Youth Scientific School, 2016, pp. 69-73.
  18. V. A. Gevorgyan, L. A. Hakhoyan, N. R. Mangasaryan, P. P. Gladyshev. Substrate temperature and annealing effects on the structural and optical properties of nano-CdS films deposited by vacuum flash evaporation technique. Chalcogenide Letters Vol. 13, No. 8, August 2016, p. 331 – 338.
 
RESEARCH PROJECTS AND GRANTS
 
  1. Project name: University’s educational and research laboratories re-equipment aimed at improving the educational process within the academic program Electronics and Nanoelectronics, September 2013 – April 2015 (Grant Project 6/13-CIF within the grant program of the Competitive Innovations Fund at the Ministry of Science and Education of Armenia, with financial support of the World Bank)
Project Coordinator: V.A. Gevorgyan   
 
  1. Project name: Investigation the possibilities of nano-structured solar cells fabrication on the base of semiconductor oxide films
(Basic and partial funding – Research Center of Critical Technologies (RCCT)
Research supervisor: V. Gevorgyan   
Researchers: Y. Buryakin, N. Mangasaryan
 
  1. Project name: Development of low temperature techniques of optimized CdTe nanoscale films and CdTe/CdS hetero-systems suitable for fabrication of efficient flexible solar cells
Research supervisor: V. Gevorgyan   
Researchers: Y. Buryakin, N. Mangasaryan, A. Movsisyan, A. Darbasyan, L. Akhoyan
 
Project name: Investigation the possibilities of nano-structured solar cells fabrication on the base of semiconductor oxide films
 
The project, being innovative in character, is aimed to develop low cost photovoltanic solar cells based on nanostructured semiconductor oxide-based heterojunctions. It includes study and development of an efficient thin film solar energy converter based on Cu2O/ZnO fully oxide nano-dimensional “bulk heterojunctions”. The use of the bulk heterojunctions with nonplanar interface provides a more efficient photocarrier separation and conversion.
 
We use contemporary techniques to develop solar cells based on Cu2O/ZnO heterojunctions which allows to produce single nanostructured Cu2O and ZnO films as well as diode nano heterostructures based on them. For production of Cu2O/ZnO heterojunctions with nonplanar interface, we use the method of thermal oxidation of thin evaporated copper film followed by a magnetron spattering disposition of ZnO double layer with different conductions.
 
Developed techniques will be applied for fabrication of nanostructured oxide solar cells with different energy diagram configurations. The above mentioned techniques will ensure the production of competitive solar cells due to their low cost and efficiency. 
 
  1. Project name: Development of low temperature techniques of optimized CdTe nano films and CdTe/CdS hetero-systems suitable for fabrication of efficient flexible solar cells, 2016 - 2019
Research supervisor: V. Gevorgyan   
Researchers: N. Mangasaryan, A. Movsisyan, A. Darbasyan, L. Akhoyan
             
The project is aimed at the development of physical and technological basis of low temperature techniques of optimized CdTe/CdS nano-heterosystems suitable for creating efficient solar cells based on different substrates, including the flexible ones.
For fabrication CdTe/CdS hetero-systems and contact transparent conductive layers of solar cells, the following low temperature techniques are used: magnetron spattering and vacuum thermal evaporation.
Despite the fact that the best results can be obtained by the method of vacuum thermal evaporation, it is difficult to provide a stoichiometric composition of CdTe and CdS films due to different partial pressure of constituent components.
To overcome these drawbacks, we are developing a modified version of the vacuum thermal evaporation method: a flash evaporation (discrete evaporation) method that has been successfully used to deposit good quality CdTe and CdS thin films for high-efficiency solar cells application.
We develop and implement a progressive methodology for the photovoltaic processes simulation to enhance the efficiency in terms of design and technology of thin-film chalcogenide semiconductor structures of solar cells.
Research outcomes include identification of physical mechanisms that define the efficiency of photovoltaic processes in thin-film solar cells based on CdS/CdTe, and a physically justified optimization of design and technology for solar cells on flexible substrates. The researches will also serve as a basis for further development of manufacturing technology.
 
 
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