The Effect of Change the Thickness on CdS/CdTe Tandem Multi-Junction Solar Cells Efficiency

Subject Areas : Journal of Optoelectronical Nanostructures

Ashrafalsadat Mirkamali ¹ , Khikmatkhalimovich Muminov ²

1 - Department of Science and Engineering, Behshahr Branch, Islamic Azad University, Behshahr, Iran
2 - Physical-Technical Institute named after S.U.umarov, academy of Sciences of the Republic of Tajikistan, Dushanbe, Tajikistan.

Received: 2016-11-29 Accepted : 2017-08-31 Published : 2017-08-01

Keywords: Simulation, Efficiency, Thickness, tandem solar cell, optimum,

Abstract :

 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

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