Abstract
The influence of post-annealing on the solar cell performance of CuZnSnS4 (CZTS) thin film prepared by sulfurization of Zn/(Cu,Sn) metal precursor with H2S gas was investigated. Two-step annealing process at 450°C and then at 550°C was adopted for the sulfurization of the stacked precursor in the mixed N2+H2S atmosphere. The post-annealing was performed at 300°C in air after the deposition of CdS buffer layer and Ni/Al grid. In comparison to the CZTS solar cell prepared without post-annealing showing lower efficiency of 4.30%, improved solar cell efficiency of 6.02% with increased Voc (590 mV) and FF (56.2%) was observed for the CZTS solar cell prepared with post-annealing. By the analysis of Voc as a function of temperature and frequency-dependent carrier concentration, the improved cell efficiency was believed to be due to the reduced absorber/buffer interface recombination and bulk defects in CZTS.
Original language | English |
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Title of host publication | 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Pages | 135-138 |
Number of pages | 4 |
ISBN (Electronic) | 9781538685297 |
DOIs | |
Publication status | Published - 2018 Nov 26 |
Event | 7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - Waikoloa Village, United States Duration: 2018 Jun 10 → 2018 Jun 15 |
Publication series
Name | 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC |
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Conference
Conference | 7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018 |
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Country/Territory | United States |
City | Waikoloa Village |
Period | 18/6/10 → 18/6/15 |
Bibliographical note
Publisher Copyright:© 2018 IEEE.
All Science Journal Classification (ASJC) codes
- Energy Engineering and Power Technology
- Renewable Energy, Sustainability and the Environment
- Electrical and Electronic Engineering
- Electronic, Optical and Magnetic Materials