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October December 2018 40 Volume 1 Issue 3 Cu2ZnSnSe4 Solar Cell by Co-Sputtering with CdS and ZnCdS HeteroJunction Companion and Its Effects Near to Hetero-interface: A Better Power Source for Micro and Nano Robotic System D. Sivasamy, M. Dev Anand, V. Krishnama Naidu Department of ECE, Jawaharlal Nehru Technological University, Hyderabad 85, Andhra Pradesh, India Department of Mechanical Engineering, Noorul Islam Centre for Higher Education, Kanyakumari District, Tamil Nadu, India Department of ECE, GRIET, Hyderabad, Andhra Pradesh, India *Corresponding author: E-Mail: sivasamy.d@gmail.com ABSTRACT In this report, copper zinc tin selenideCu2ZnSnSe4 (CZTSe) solar cell photo conversion efficiency of 4% and 2.2% were achieved by co-sputtered CZT precursor followed by selenization process without any carrier gas flow and with the aid of chemical bath deposited cadmium sulfide (CdS) and zinc cadmium sulfide (ZnCdS) heterojunction companion and its effects related to Se, Sn, Cu elemental loss near to the CdS/ZnCdS and ZnCdS/CZTSe hetero-interface then CdS/ZnCdS and ZnCdS/CZTSe solar cell performance is preliminarily presented and discussed. Especially this work frames a good baseline for obtaining CZTSe absorber without any carrier gas flow during the selenization process and ZnCdS hetero-junction companion consisting of very less cadmium content alternative to the cadmium rich CdS buffer layer for earth-abundant CZTSe solar cells. The present grain based discrete CZTSe p-n junction solar cell device is very useful as a power energy source for micro and nano robot system.

sun international journal of engineering and basic sciences

Cu2ZnSnSe4 Solar Cell by Co-Sputtering with CdS and ZnCdS HeteroJunction Companion and Its Effects Near to Hetero-interface: A Better Power Source for Micro and Nano Robotic System