气候变化领域集成服务门户(CCPortal): Efficient stable graphene-based perovskite solar cells with high flexibility in device assembling: Via modular architecture design

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DOI	10.1039/c9ee02391g
	Efficient stable graphene-based perovskite solar cells with high flexibility in device assembling: Via modular architecture design
	Zhang C.; Wang S.; Zhang H.; Feng Y.; Tian W.; Yan Y.; Bian J.; Wang Y.; Jin S.; Zakeeruddin S.M.; Grätzel M.; Shi Y.
发表日期	2019
ISSN	17545692
起始页码	3585
结束页码	3594
卷号	12 期号:12
英文摘要	Carbon-based perovskite solar cells (C-PSCs) are emerging as low-cost stable photovoltaics. However, their power conversion efficiency (PCE) still lags behind that of devices based on Au or Ag as the current collector. Here, we introduced an innovative modular PSC design using a carbon back electrode, whose sheet resistance and thickness were greatly reduced by covering it with another carbon-coated FTO glass that was applied under pressure. We showed that these two individual elements could be assembled and separated repeatedly. Moreover, among the various commercial carbon sources (carbon black, graphite sheet, and graphene), graphene exhibited the best overall performance, showing the crucial importance of graphene as a charge collector. Power conversion efficiency (PCE) of 18.65% was achieved for graphene-based PSCs (G-PSCs), which was among the highest efficiency reported so far for C-PSCs. Moreover, the optimized devices without encapsulation retained 90% of their initial PCE after aging at an elevated temperature of 85 °C for 1000 h. Remarkably, G-PSCs showed significant structural flexibility; there was negligible degradation in PCE after repeated disassembling and assembling for more than 500 cycles. Our system provides a promising prospect for the facile repair and maintenance of PSCs via modular interconnections; related strategies may be extended to other devices. © 2019 The Royal Society of Chemistry.
英文关键词	Carbon black; Conversion efficiency; Efficiency; Graphene; Graphene devices; Perovskite; Perovskite solar cells; Repair; Solar power generation; Charge collectors; Current collector; Elevated temperature; Modular architectures; Optimized devices; Power conversion efficiencies; Repair and maintenance; Structural flexibilities; Collector efficiency; black carbon; design method; encapsulation; energy efficiency; nanoparticle; perovskite; photovoltaic system; solar power
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/189769
作者单位	State Key Laboratory of Fine Chemicals, Department of Chemistry, Dalian University of Technology, Dalian, 116024, China; Laboratory of Photonics and Interfaces, Department of Chemistry and Chemical Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, CH-1015, Switzerland; Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Ministry of Education), School of Physics, Dalian University of Technology, Dalian, 116024, China; State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China; School of Mechanical Engineering, Dalian University of Technology, Dalian, 116024, China
推荐引用方式 GB/T 7714	Zhang C.,Wang S.,Zhang H.,et al. Efficient stable graphene-based perovskite solar cells with high flexibility in device assembling: Via modular architecture design[J],2019,12(12).
APA	Zhang C..,Wang S..,Zhang H..,Feng Y..,Tian W..,...&Shi Y..(2019).Efficient stable graphene-based perovskite solar cells with high flexibility in device assembling: Via modular architecture design.Energy & Environmental Science,12(12).
MLA	Zhang C.,et al."Efficient stable graphene-based perovskite solar cells with high flexibility in device assembling: Via modular architecture design".Energy & Environmental Science 12.12(2019).