Effect of annealing temperature and $$hbox {CdCl}_{2}$$ treatment on the photo-conversion efficiency of $$hbox {CdTe/Zn}_{0.1}$$CdTe/Zn0.1$$hbox {Cd}_{0.9}$$Cd0.9S thin film solar cells |
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| Authors: | Sonal Singhal Amit Kumar Chawla Hari Om Gupta Ramesh Chandra |
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| Affiliation: | 1.Department of Electrical Engineering,Shiv Nadar University,Noida,India;2.Department of Physics, School of Engineering,University of Petroleum & Energy Studies,Dehradun,India;3.Jaypee Institute of Information Technology,Noida,India;4.Institute Instrumentation Center, IIT Roorkee,Roorkee,India |
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| Abstract: | We report the effects of annealing in conjunction with (hbox {CdCl}_{2}) treatment on the photovoltaic properties of (hbox {CdTe/Zn}_{0.1}hbox {Cd}_{0.9})S thin film solar cells. CdTe layer is subjected to dry (hbox {CdCl}_{2}) treatment by thermal evaporation method and subsequently, heat treated in air using a tube furnace from 400 to (500{^{circ }}hbox {C}). AFM and XRD results show improved grain size and crystallographic properties of the CdTe film with dry (hbox {CdCl}_{2}) treatment. This recrystallization and grain growth of the CdTe layer upon (hbox {CdCl}_{2}) treatment translates into improved photo-conversion efficiencies of (hbox {CdTe/Zn}_{0.1}hbox {Cd}_{0.9})S cell. The results of dry (hbox {CdCl}_{2}) treatment were compared with conventional wet (hbox {CdCl}_{2}) treatment. Photo-conversion efficiency of 5.2% is achieved for dry (hbox {CdCl}_{2})-treated cells in comparison with 2.4% of wet-treated cell at heat treatment temperature of (425{^{circ }}hbox {C}). |
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