Citation: Yu Zhi-Kai, Fu Wei-Fei, Liu Wen-Qing, Zhang Zhong-Qiang, Liu Yu-Jing, Yan Jie-Lin, Ye Tao, Yang Wei-Tao, Li Han-Ying, Chen Hong-Zheng. Solution-processed CuO_x as an efficient hole-extraction layer for inverted planar heterojunction perovskite solar cells[J]. Chinese Chemical Letters, ;2017, 28(1): 13-18. doi: 10.1016/j.cclet.2016.06.021 shu

Solution-processed CuO_x as an efficient hole-extraction layer for inverted planar heterojunction perovskite solar cells

State Key Laboratory of Silicon Materials, MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China

Corresponding author: Chen Hong-Zheng, hzchen@zju.edu.cn
Received Date: 16 May 2016
Revised Date: 30 May 2016
Accepted Date: 6 June 2016
Available Online: 21 January 2016

Figures(5)

A solution-processed CuO_x film has been successfully integrated as the hole-transporting layer (HTL) for inverted planar heterojunction perovskite solar cells (PVSCs). The CuO_x layer is fabricated by simply spin-coating a copper acetylacetonate (Cu (acac)₂) chloroform solution onto ITO glass with high transparency in the visible range. The compact and pinhole-free perovskite film with large grain domains is grown on the CuO_x film. The inverted PVSCs with the structure of ITO/CuO_x/MAPbI₃/PC₆₁BM/ZnO/Al are fabricated and show a best PCE of 17.43% under standard AM 1.5G simulated solar irradiation with a V_OC of 1.03 V, a J_SC of 22.42 mA cm^-2, and a fill factor of 0.76, which is significantly higher and more stable than that fabricated from the often used hole-transporting material PEDOT:PSS (11.98%) under the same experimental conditions. The enhanced performance is attributed to the efficient hole extraction through the CuO_x layer as well as the high-quality CH₃NH₃PbI₃ films grown on the CuO_x. Our results indicate that low-cost and solution-processed CuO_x film is a promising HTL for high performance PVSCs with better stability.
- CuO_x,
- Solution-processing,
- Hole-transporting layer,
- Perovskite solar cells,
- Stable
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Solution-processed CuOx as an efficient hole-extraction layer for inverted planar heterojunction perovskite solar cells

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Solution-processed CuO_x as an efficient hole-extraction layer for inverted planar heterojunction perovskite solar cells