• Harshleen Kaur
• Rajesh Mehra

This paper deals with the modified structure of CdTe based solar cells. The oxygenated nanocrystalline cadmium sulfide (CdS:O) window layer is replaced by a large bandgap Cd1-xZnxS layer at an optimal x content of 0.6 in order to improve the efficiency of the cell. The absorption edge shifts toward lower wavelength, more photons are absorbed by CdTe layer and the short circuit current density (JSC) is hence improved which in turn improves the efficiency of the cell. Increased efficiency, open circuit voltage (VOC) and JSC of 23.42%, 2.30 V and 30.10 mA/cm2 were recorded. Numerical simulations were carried out at varying Cd1-xZnxS layer thickness to investigate the solar cell behavior. Modified solar cell (Glass/SnO2/ZTO/Cd1-xZnxS/CdTe1-xSx/CdTe/ZnTe/Pt) with high efficiency of 23.42% was obtained.

CdTe Solar Cells, CdZnS Window Layer, Efficiency, Numerical Simulation

"Modified structure for CdTe Based Solar Cells Using CdZnS Buffer Layer", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 6, page no.422-427, June-2018, Available :http://www.jetir.org/papers/JETIR1806304.pdf

"Modified structure for CdTe Based Solar Cells Using CdZnS Buffer Layer", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 6, page no. pp422-427, June-2018, Available at : http://www.jetir.org/papers/JETIR1806304.pdf