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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Main Authors: Leow, Shin Woei, Li, Wenjie, Tan, Joel Ming Rui, Venkataraj, Selvaraj, Tunuguntla, Venkatesh, Zhang, Mengyuan, Magdassi, Shlomo, Wong, Lydia Helena
Other Authors: School of Materials Science and Engineering
Format: Article
Language:English
Published: 2022
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Online Access:https://hdl.handle.net/10356/159589
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Institution: Nanyang Technological University
Language: English
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spelling 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.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Materials
Cation Substitutions
Rapid Thermal Annealing
spellingShingle 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
description 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.
author2 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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