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Recent progress in defect engineering for kesterite solar cells

Science China(Physics,Mechanics & Astronomy) 2023年第1期66卷 18-33页

作者： Kaiwen Sun Jialiang Huang Jianjun Li Chang Yan Xiaojing Hao Australian Centre for Advanced Photovoltaics School of Photovoltaic and Renewable Energy EngineeringUniversity of New South WalesSydney 2033Australia

kesterite Cu_(2)ZnSn(S,Se)_(4)(CZTSSe)thin film solar cells have been regarded as one of the most promising thin film photovoltaic technologies,offering a low-cost and environmentally friendly solar energy *** remarkable advances have been achieved in kesterite solar cells,the performance gap relative to mature thin film photovoltaic technologies such as CIGSe and Cd Te remains *** open-circuit voltage(V_(OC))deficit has been recognized as the main limiting factor to performance improvement,with undesirable intrinsic defects being a key culprit contributing to the low V_(OC).To realize the promise inherent in kesterite CZTS to become an earth-abundant alternative to existing thin film photovoltaic technologies with comparable performance,significant research effort has been invested to tackle the challenging defect *** this review,recent progress and achievements relevant to engineering improvements to the defect properties of the semiconductor have been examined and *** strategies include:(i)manipulating the synthesis process to obtain a desirable reaction pathway and chemical environment;(ii)introducing cation substitution to increase the ionic size difference and supress the related band tailing deep-level defects;(iii)applying post deposition treatment(PDT)with alkaline elements to passivate the detrimental *** advances obtained from work on kesterite solar cells may lead to future high performance from this material and may be further extended to other earth-abundant chalcogenide photovoltaic technologies.

关键词： thin film solar cells kesterite solar cells Cu_(2)ZnSn(S,Se)_(4)(CZTSSe,CZTS) defect engineering

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Recent development of kesterite Cu2ZnSn（S,Se）4 solar cells

Recent development of kesterite Cu2ZnSn（S,Se）4 solar cells

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第十一届新型太阳能材料科学与技术学术研讨会

作者： Dongmei Li Jiangjian Shi Jinlin Wang Xiao Xu Licheng Lou Kang Yin Yanhong Luo Huijue Wu Qingbo Meng Key Laboratory for Renewable Energy Institute of PhysicsChinese Academy of Sciences

Photovoltaic technology is an important way of solar energy ***-film solar cells have the advantages of lightness and flexibility,which show broad development space in multi-scenario applications such as portable power sources and integrated photovoltaic(BIPV),thus attracting extensive attention from scientific researchers and the ***-zinc-tin-sulfur-selenium(CZTSSe) is a multi-element compound semiconductor material derived from copper indium gallium selenium,which has unique advantages such as abundant reserves of constituent elements,non-toxicity,high stability,and compatibility with existing thin-film photovoltaic *** recent years,CZTSSe solar cells have developed rapidly,and Chinese researchers have made great contribution to this ***,14.9% certified efficiency has been achieved by our *** this talk,we will focus on our latest research progress in CZTSSe solar cells from defect regulation to interface engineering,from rigid to flexible cells for highly efficient devices [1-8].On this basis,the challenge of CZTSSe solar cells will also be discussed.

关键词： kesterite solar cells Defect regulation Interface engineering Doping

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Efficient Cu2ZnSn(Se,S)4 solar cells with 79% fill factor using two-step annealing

Efficient Cu2ZnSn(Se,S)4 solar cells with 79% fill factor us...

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第七届新型太阳能电池材料科学与技术学术研讨会

作者： Rujun Sun Daming Zhuang Ming Zhao Ning Zhang Qianming Gong Yaowei Wei Guoan Ren Yixuan Wu Jinquan Wei School of Materials Science and Engineering Tsinghua University Key Lab for Advanced Materials Processing Technology Ministry of Education Beijing SiFang Crenergy Photoelectronic Technology Co LTD

A processing based on CZTS or CZTSe quaternary target sputtering has been developed as alternative one [1-2].As the as-deposited precursor is usually crystallinity-poor and sulfur-poor,heat treatment,typically selenization or sulfurization,is adopted to enhance grain growth,supplement chalcogen and tune Se/S ratio [3].In this work,CZTSeS absorbers were prepared by sputtering with CZTS targets followed by selenization under Ar carried H2 Se *** is found that additional holding plateau changed grain size and phase distribution along depth direction of films during heating,thus a different coverage of CZTSeS grains on Mo *** two-step annealing,CZTSeS absorbers with uniform grains and completed coverage on Mo layer are obtained and a FF as high as 79% is *** energy band diagram at CZTSeS/Mo interface for high-FF solar cell is *** work highlights great potential for sputtering processing based on quaternary target and demonstrates that fill factor of 79 % can be experimentally achieved in CZTSeS solar cells.

关键词： kesterite solar cells Fill Factor Two-step annealing Quaternary target

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