Solution-processed semitransparent CZTS thin-film solar cells via cation substitution and rapid thermal annealing
Semitransparent solar cells are able to capitalize on land scarcity in urban environments by co-opting windows and glass structures as power generators, thereby expanding the capacity of photovoltaics to meet energy needs. To be successful, devices must be efficient, possess good visual transparency...
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sg-ntu-dr.10356-1595892022-06-28T01:47:08Z Solution-processed semitransparent CZTS thin-film solar cells via cation substitution and rapid thermal annealing Leow, Shin Woei Li, Wenjie Tan, Joel Ming Rui Venkataraj, Selvaraj Tunuguntla, Venkatesh Zhang, Mengyuan Magdassi, Shlomo Wong, Lydia Helena School of Materials Science and Engineering Campus for Research Excellence and Technological Enterprise (CREATE) Singapore-HUJ Alliance for Research and Enterprise (SHARE) Engineering::Materials Cation Substitutions Rapid Thermal Annealing Semitransparent solar cells are able to capitalize on land scarcity in urban environments by co-opting windows and glass structures as power generators, thereby expanding the capacity of photovoltaics to meet energy needs. To be successful, devices must be efficient, possess good visual transparency, long-term stability, and low cost. Copper zinc tin sulfide is a promising thin-film material that consists of earth-abundant elements. For optical transparency, the usual molybdenum back contact is replaced with a transparent conducting oxide (TCO). However, due to subsequent high-temperature annealing, the TCO degrades, losing conductivity, or forms a poor interface with CZTS. Lower temperatures mitigate this issue but hinder grain growth in CZTS films. Herein, cadmium substitution and silver and sodium doping are used to aid grain growth and improve film quality at lower annealing temperatures. Thin molybdenum is sputtered on TCO to help improve the interface transition postannealing by conversion to MoS2. Rapid thermal processing is used to minimize high-temperature exposure time to preserve the TCO. With these methods, a semitransparent device with a front illumination efficiency of 2.96% is demonstrated. Nanyang Technological University National Research Foundation (NRF) The authors acknowledgethe funding support from NTU-COE Industry Research Collaboration Award 2015 and CREATE Programme under the Campus for Research Excellence and Technological Enterprise (CREATE), which is supported by the National Research Foundation, Prime Minister’s Office, Singapore. 2022-06-28T01:47:08Z 2022-06-28T01:47:08Z 2021 Journal Article Leow, S. W., Li, W., Tan, J. M. R., Venkataraj, S., Tunuguntla, V., Zhang, M., Magdassi, S. & Wong, L. H. (2021). Solution-processed semitransparent CZTS thin-film solar cells via cation substitution and rapid thermal annealing. Solar RRL, 5(7), 2100131-. https://dx.doi.org/10.1002/solr.202100131 2367-198X https://hdl.handle.net/10356/159589 10.1002/solr.202100131 2-s2.0-85104885179 7 5 2100131 en Solar RRL © 2021 Wiley-VCH GmbH. All rights reserved. |
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Engineering::Materials Cation Substitutions Rapid Thermal Annealing Leow, Shin Woei Li, Wenjie Tan, Joel Ming Rui Venkataraj, Selvaraj Tunuguntla, Venkatesh Zhang, Mengyuan Magdassi, Shlomo Wong, Lydia Helena Solution-processed semitransparent CZTS thin-film solar cells via cation substitution and rapid thermal annealing |
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Semitransparent solar cells are able to capitalize on land scarcity in urban environments by co-opting windows and glass structures as power generators, thereby expanding the capacity of photovoltaics to meet energy needs. To be successful, devices must be efficient, possess good visual transparency, long-term stability, and low cost. Copper zinc tin sulfide is a promising thin-film material that consists of earth-abundant elements. For optical transparency, the usual molybdenum back contact is replaced with a transparent conducting oxide (TCO). However, due to subsequent high-temperature annealing, the TCO degrades, losing conductivity, or forms a poor interface with CZTS. Lower temperatures mitigate this issue but hinder grain growth in CZTS films. Herein, cadmium substitution and silver and sodium doping are used to aid grain growth and improve film quality at lower annealing temperatures. Thin molybdenum is sputtered on TCO to help improve the interface transition postannealing by conversion to MoS2. Rapid thermal processing is used to minimize high-temperature exposure time to preserve the TCO. With these methods, a semitransparent device with a front illumination efficiency of 2.96% is demonstrated. |
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School of Materials Science and Engineering |
author_facet |
School of Materials Science and Engineering Leow, Shin Woei Li, Wenjie Tan, Joel Ming Rui Venkataraj, Selvaraj Tunuguntla, Venkatesh Zhang, Mengyuan Magdassi, Shlomo Wong, Lydia Helena |
format |
Article |
author |
Leow, Shin Woei Li, Wenjie Tan, Joel Ming Rui Venkataraj, Selvaraj Tunuguntla, Venkatesh Zhang, Mengyuan Magdassi, Shlomo Wong, Lydia Helena |
author_sort |
Leow, Shin Woei |
title |
Solution-processed semitransparent CZTS thin-film solar cells via cation substitution and rapid thermal annealing |
title_short |
Solution-processed semitransparent CZTS thin-film solar cells via cation substitution and rapid thermal annealing |
title_full |
Solution-processed semitransparent CZTS thin-film solar cells via cation substitution and rapid thermal annealing |
title_fullStr |
Solution-processed semitransparent CZTS thin-film solar cells via cation substitution and rapid thermal annealing |
title_full_unstemmed |
Solution-processed semitransparent CZTS thin-film solar cells via cation substitution and rapid thermal annealing |
title_sort |
solution-processed semitransparent czts thin-film solar cells via cation substitution and rapid thermal annealing |
publishDate |
2022 |
url |
https://hdl.handle.net/10356/159589 |
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1738844901960843264 |