The Effect of Change the Thickness on CdS/CdTe Tandem Multi-Junction Solar Cells Efficiency
محورهای موضوعی : فصلنامه نانوساختارهای اپتوالکترونیکی
Ashrafalsadat Mirkamali
1
(Department of Science and Engineering, Behshahr Branch, Islamic Azad University, Behshahr, Iran)
Khikmatkhalimovich Muminov
2
(Physical-Technical Institute named after S.U.umarov, academy of Sciences of the Republic of Tajikistan, Dushanbe, Tajikistan.)
کلید واژه: Simulation, Efficiency, Thickness, tandem solar cell, optimum,
چکیده مقاله :
Researchers in the field of simulation have been mainly interested in the question of how to increase the efficiency of solar cells. Therefore this study aimed to investigate CdS/CdTe solar cells by applying AMPS-1D software. The impact of semiconductor layers thickness on the output parameters of the CdS/CdTe solar cell is being analyzed and studied carefully, for example, fill factor, efficiency, the density of short-circuit current and open circuit voltage. To acquire the most efficiency estimation, a new tandem multi-junction structure is intended by using two solar cells connected back to back with each other and designed based on the results gained from the single-junction solar cells. Numerical simulations demonstrated that the highest CdS/CdTe efficiency is 31.8% which can be achieved whenever the p-CdS layer thickness is equal to 50 nm, and the n-CdS layer thickness is equal to 200 nm, while the thicknesses of the n-CdTe layer and p-CdTe layer are kept fixed equal to 3000 nm and 1000 nm, respectively
[1] Wu. Xuanzhi, High-efficiency polycrystalline CdTe thin-film solar cells, Solar Energy, 77 (2004) 803–814.
[2] A. Nowshad, Y. Akira, K. Makoto, Effect of ZnTe and CdZnTe alloys at the Back Contact of 1-μm Thick CdTe Thin Film Solar Cells, Japanese journal of applied physics, 41.( 2002) 2834-2840.
[3] H. Sharafat, A. Nowshad, M. A. Matin, A numerical study on the prospects of high efficiency ultra thin ZnxCd1-xS/CdTe solar cell, Chalcogenide Letters, 8 (3) (2011) 263 – 272.
[4] A. Romeo, A.N. Tiwari, H. Zogg, Proceedings of the 2nd World Conference and Exhibition on Photovoltaic Solar Energy Conversion, Vienna,Austria, (1998) 1105-1108.
[5] C. Ferekides, J. Ma Y. Britt, L. Killian, High efficiency CdTe solar cells by close spaced sublimation, Proceedings of the 23rd IEEE Photovoltaic Specialists Conference, 1993.-New York, USA. 389 –393.
[6] http://www.pveducation.org/pvcdrom/solar-cell-operation/tandem-cells
[7] A. L. Fahrenbruch, R. H. Bube, Fundamentals of Solar Cells Photovoltaic Solar Energy Conversion, Fahrenbruch,A.- New York.- Academic Press,1983.
[8] P. Würfel, Physics of solar cells: From principles to new concepts, Wiley-VCH, 2005.
[9] J. F. Stephen, Solar cell device physics, 2nd edition.- USA. Elsevier, 2010.
[10] YJ.S. Tyan, E.A. Perez-Albuerne, Efficient thin film CdS/CdTe solar cells, Proceedings of 16th IEEE Photovoltaic Specialists Conference, IEEE Publishing, New York, (1982) 794.
[11] C. Ferekides, J. Britt, Y. Ma, L. Killian, High efficiency CdTe solar cells by close spaced sublimation, Proceedings of Twenty- Third-Photovoltaic-Specialists-Conference IEEE, New York, USA, (1993) 389.
[12] Wu Xuanzhi, High-efficiency polycrystalline CdTe thin-film solar cells, Solar Energy, 77 (2004) 803–814.
[13] HC. Chou, A. Rohatgi, NM Jokerst, EW. Thomas, S. Kamra. Copper Migration in CdTe Heterojunction Solar Cells. J. Electr. Mater. 25(7) (1996) 1093–1098.
