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An efficient, flexible perovskite solar module exceeding 8% prepared with an ultrafast PbI2 deposition rate.

ABSTRACT: Large-area, pinhole-free CH3NH3PbI3 perovskite thin films were successfully fabricated on 5?cm?×?5?cm flexible indium tin oxide coated polyethylene naphthalate (ITO-PEN) substrates through a sequential evaporation/spin-coating deposition method in this research. The influence of the rate-controlled evaporation of PbI2 films on the quality of the perovskite layer and the final performance of the planar-structured perovskite solar cells were investigated. An ultrafast evaporation rate of 20?Å?s-1 was found to be most beneficial for the conversion of PbI2 to CH3NH3PbI3 perovskite. Based on this high-quality CH3NH3PbI3 film, a resultant flexible perovskite solar sub-module (active area of 16?cm2) with a power conversion efficiency of more than 8% and a 1.2?cm2 flexible perovskite solar cell with a power conversion efficiency of 12.7% were obtained.

SUBMITTER: Li K 

PROVIDER: S-EPMC5765045 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature

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An efficient, flexible perovskite solar module exceeding 8% prepared with an ultrafast PbI<sub>2</sub> deposition rate.

Li Kunpeng K   Xiao Junyan J   Yu Xinxin X   Li Tianhui T   Xiao Da D   He Jiang J   Zhou Peng P   Zhang Yangwen Y   Li Wangnan W   Ku Zhiliang Z   Zhong Jie J   Huang Fuzhi F   Peng Yong Y   Cheng Yibing Y  

Scientific reports 20180111 1

Large-area, pinhole-free CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> perovskite thin films were successfully fabricated on 5 cm × 5 cm flexible indium tin oxide coated polyethylene naphthalate (ITO-PEN) substrates through a sequential evaporation/spin-coating deposition method in this research. The influence of the rate-controlled evaporation of PbI<sub>2</sub> films on the quality of the perovskite layer and the final performance of the planar-structured perovskite solar cells were investigated  ...[more]

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