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  • 文献标题:   Highly efficient and stable planar perovskite solar cells with reduced graphene oxide nanosheets as electrode interlayer
  • 文献类型:   Article
  • 作　　者:   YEO JS, KANG R, LEE S, JEON YJ, MYOUNG N, LEE CL, KIM DY, YUN JM, SEO YH, KIM SS, NA SI
  • 作者关键词:   perovskite solar cell, reduced graphene oxide, planar structure, interlayer
  • 出版物名称:   NANO ENERGY
  • ISSN:   2211-2855 EI 2211-3282
  • 通讯作者地址:   Gwangju Inst Sci Technol
  • 被引频次:   187
  • DOI:   10.1016/j.nanoen.2014.12.022
  • 出版年:   2015

▎ 摘　　要

We demonstrate a simple solution and room-temperature processed reduced graphene oxide (RGO) as a novel hole-transporting material (HTM) to guarantee highly efficient and highly stable CH3NH3PbI3 perovskite solar cells (PeSCs). The effects of RGO HTM are systemically investigated in terms of PeSC efficiency, PeSC stability, morphology of perovskite film, recombination dynamics, and charge-transport through CH3NH3PbI3/HTM interface. The resultant PeSC with a planar configuration of glass/ITO/RGO/CH3NH3PbI3/PC61BM/bathocuproine (BCP)/Ag exhibits improved device efficiency (maximum PCE of 10.8%) with high reproducibility than those of the reference devices using conventional PEDOT:PSS and GO HTMs. Also, the RGO-based PeSCs show highly desirable device stability in comparison to the PEDOT:PSS PeSCs. (C) 2014 Elsevier Ltd. All rights reserved.