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Kesterite Solar Cells: Insights into Current Strategies and Challenges
Advanced Science ( IF 14.3 ) Pub Date : 2021-03-03 , DOI: 10.1002/advs.202004313 Mingrui He 1 , Chang Yan 1 , Jianjun Li 1 , Mahesh P Suryawanshi 1 , Jinhyeok Kim 2 , Martin A Green 1 , Xiaojing Hao 1
Advanced Science ( IF 14.3 ) Pub Date : 2021-03-03 , DOI: 10.1002/advs.202004313 Mingrui He 1 , Chang Yan 1 , Jianjun Li 1 , Mahesh P Suryawanshi 1 , Jinhyeok Kim 2 , Martin A Green 1 , Xiaojing Hao 1
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Earth‐abundant and environmentally benign kesterite Cu2ZnSn(S,Se)4 (CZTSSe) is a promising alternative to its cousin chalcopyrite Cu(In,Ga)(S,Se)2 (CIGS) for photovoltaic applications. However, the power conversion efficiency of CZTSSe solar cells has been stagnant at 12.6% for years, still far lower than that of CIGS (23.35%). In this report, insights into the latest cutting‐edge strategies for further advance in the performance of kesterite solar cells is provided, particularly focusing on the postdeposition thermal treatment (for bare absorber, heterojunction, and completed device), alkali doping, and bandgap grading by engineering graded cation and/or anion alloying. These strategies, which have led to the step‐change improvements in the power conversion efficiency of the counterpart CIGS solar cells, are also the most promising ones to achieve further efficiency breakthroughs for kesterite solar cells. Herein, the recent advances in kesterite solar cells along these pathways are reviewed, and more importantly, a comprehensive understanding of the underlying mechanisms is provided, and promising directions for the ongoing development of kesterite solar cells are proposed.
中文翻译：
Kesterite 太阳能电池：洞察当前策略和挑战
地球资源丰富、环境友好的黄锡黄锡矿 Cu 2 ZnSn(S,Se) 4 (CZTSSe) 是其表亲黄铜矿 Cu(In,Ga)(S,Se) 2 (CIGS) 的有前途的替代品，用于光伏应用。然而，CZTSSe太阳能电池的功率转换效率多年来一直停滞在12.6%，仍远低于CIGS（23.35%）。在本报告中，深入了解了进一步提高黄锡锌矿太阳能电池性能的最新前沿策略，特别关注沉积后热处理（用于裸吸收器、异质结和完整器件）、碱掺杂和带隙分级通过工程分级阳离子和/或阴离子合金化。这些策略使得相应的CIGS太阳能电池的功率转换效率取得了阶跃式的提高，也是最有希望实现黄锌锡矿太阳能电池效率进一步突破的策略。本文回顾了黄锡锌矿太阳能电池在这些途径上的最新进展，更重要的是，提供了对其潜在机制的全面理解，并提出了黄锡锌矿太阳能电池持续发展的有前景的方向。
更新日期：2021-05-05
中文翻译：
Kesterite 太阳能电池：洞察当前策略和挑战
地球资源丰富、环境友好的黄锡黄锡矿 Cu 2 ZnSn(S,Se) 4 (CZTSSe) 是其表亲黄铜矿 Cu(In,Ga)(S,Se) 2 (CIGS) 的有前途的替代品，用于光伏应用。然而，CZTSSe太阳能电池的功率转换效率多年来一直停滞在12.6%，仍远低于CIGS（23.35%）。在本报告中，深入了解了进一步提高黄锡锌矿太阳能电池性能的最新前沿策略，特别关注沉积后热处理（用于裸吸收器、异质结和完整器件）、碱掺杂和带隙分级通过工程分级阳离子和/或阴离子合金化。这些策略使得相应的CIGS太阳能电池的功率转换效率取得了阶跃式的提高，也是最有希望实现黄锌锡矿太阳能电池效率进一步突破的策略。本文回顾了黄锡锌矿太阳能电池在这些途径上的最新进展，更重要的是，提供了对其潜在机制的全面理解，并提出了黄锡锌矿太阳能电池持续发展的有前景的方向。
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