Above 1% efficiency of a ferroelectric solar cell based on the Pb(Zr,Ti)O3 film

Fengang Zheng; Yu Xin; Wen Huang; Jinxing Zhang; Xiaofeng Wang; Mingrong Shen; Wen Dong; Liang Fang; Yongbin Bai; Xiaoqing Shen; Jianhua Hao

doi:10.1039/C3TA13724D

Above 1% efficiency of a ferroelectric solar cell based on the Pb(Zr,Ti)O₃ film†

Fengang Zheng,*^ab Yu Xin,*^a Wen Huang,^bc Jinxing Zhang,^de Xiaofeng Wang,^a Mingrong Shen,^a Wen Dong,^a Liang Fang,^a Yongbin Bai,^f Xiaoqing Shen^f and Jianhua Hao*^b

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* Corresponding authors

^a Department of Physics and Jiangsu Key Laboratory of Thin Films, Soochow University, Suzhou 215006, China
E-mail: zhfg@suda.edu.cn, xylzf_1999@suda.edu.cn

^b Department of Applied Physics, Hong Kong Polytechnic University, Hong Kong, China
E-mail: jh.hao@polyu.edu.hk

^c State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronics Science and Technology of China, Chengdu, China

^d Department of Physics, Beijing Normal University, Beijing, China

^e Key Laboratory of Theoretical and Computational Photochemistry, Ministry of Education, Beijing Normal University, Beijing, China

^f China Satellite Maritime Tracking and Controlling Department, Jiangyin 214431, China

Abstract

Pb(Zr,Ti)O₃ (PZT) film with a band gap of 3.6 eV was prepared on In₂O₃:Sn (ITO) coated glass, and then an amorphous silicon (a-Si) film with a narrow band gap of 1.8 eV was deposited on the PZT/ITO/glass. The short-circuit current of Ag/a-Si/PZT/ITO/glass sample is 2.56 mA cm⁻², about 50 times greater than that of Pt/PZT/ITO/glass sample. The energy level of the a-Si film is well matched with that of PZT film, which is beneficial to the transport of UV-visible light-induced charges in the Ag/a-Si/PZT/ITO/glass sample. The photovoltaic output can be tuned by changing the dopant type of the a-Si film, and the maximum photoelectric conversion efficiency is measured to be up to 1.25% in the PZT film with an n-type a-Si film (phosphorus doped).

Journal of Materials Chemistry A

Above 1% efficiency of a ferroelectric solar cell based on the Pb(Zr,Ti)O₃ film†

Abstract

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Above 1% efficiency of a ferroelectric solar cell based on the Pb(Zr,Ti)O₃ film

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Journal of Materials Chemistry A