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Improved performance of perovskite solar cells through using (FA)x(MA)1-xPbI3 optical absorber layer

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Abstract

In this work, the perovskite solar cells (PSCs) were fabricated with the bandgap-tunable (FA)x(MA)1-xPbI3 absorber layers through a facile two-stage deposition route. The doping was realized by adding the formamidinium iodide (FAI) into a precursor MAI solution. Both the surface morphology and electrochemical impedance spectra (EIS) were conducted to evaluate the absorber layers or solar cells. After the optimization, the best PSC performance of 14.73% was achieved at a nominal FAI content of 12.5 at.%. The performance enhancement was attributed to both the enhancement of visible light harvesting and carrier transport capability. Besides, the stability of a PSC device based on the single MAPbI3 absorber layer was also investigated, and a power conversion efficiency (PCE) of 11.27% remained even after laying in vacuum for 10 days.

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Authors and Affiliations

  1. School of Medical Imaging, Xuzhou Medical University, Xuzhou, 221004, China

    Mei-rong Sui  (隋美蓉)

  2. School of Materials Science and Engineering, China University of Mining and Technology, Xuzhou, 221116, China

    Sheng-ping Li  (李省平) & Xiu-quan Gu  (顾修全)

Authors
  1. Mei-rong Sui  (隋美蓉)
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  2. Sheng-ping Li  (李省平)
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  3. Xiu-quan Gu  (顾修全)
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Corresponding author

Correspondence to Mei-rong Sui  (隋美蓉).

Additional information

This work has been supported by the Science and Technology Projects of Xuzhou City (No.KC14SM088), and the Natural Science Fund for Colleges and Universities in Jiangsu Province (No.15KJB430031).

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Sui, Mr., Li, Sp. & Gu, Xq. Improved performance of perovskite solar cells through using (FA)x(MA)1-xPbI3 optical absorber layer. Optoelectron. Lett. 15, 117–121 (2019). https://doi.org/10.1007/s11801-019-8118-1

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  • DOI: https://doi.org/10.1007/s11801-019-8118-1

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