SiO2 nanoparticle-regulated crystallization of lead halide perovskite and improved efficiency of carbon-electrode-based low-temperature planar perovskite solar cells

doi:10.1088/1674-1056/ab8da5

中国物理B ›› 2020, Vol. 29 ›› Issue (7): 78401-078401.doi: 10.1088/1674-1056/ab8da5

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇下一篇

SiO₂ nanoparticle-regulated crystallization of lead halide perovskite and improved efficiency of carbon-electrode-based low-temperature planar perovskite solar cells

Zerong Liang(梁泽荣), Bingchu Yang(杨兵初), Anyi Mei(梅安意), Siyuan Lin(林思远), Hongwei Han(韩宏伟), Yongbo Yuan(袁永波), Haipeng Xie(谢海鹏), Yongli Gao(高永立), Conghua Zhou(周聪华)

1 Hunan Key Laboratory of Super-microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, China;
2 Michael Gr & #228;tzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China;
3 Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627, USA

收稿日期:2020-03-05 修回日期:2020-04-20 出版日期:2020-07-05 发布日期:2020-07-05
通讯作者: Bingchu Yang, Conghua Zhou E-mail:bingchuyang@csu.edu.cn;chzhou@csu.edu.cn
基金资助:
Project supported by the Fundamental Research Funds for the Central South University, China (Grant No. 2019zzts426), the National Natural Science Foundation of China (Grant Nos. 61172047, 61774170, and 51673218), the Scientific and Technological Project of Hunan Provincial Development and Reform Commission, China, the National Science Foundation, USA (Grant Nos. CBET-1437656 and DMR-1903962), and the Innovation-Driven Project of Central South University (Grant No. 2020CX006).

SiO₂ nanoparticle-regulated crystallization of lead halide perovskite and improved efficiency of carbon-electrode-based low-temperature planar perovskite solar cells

Zerong Liang(梁泽荣)¹, Bingchu Yang(杨兵初)¹, Anyi Mei(梅安意)², Siyuan Lin(林思远)¹, Hongwei Han(韩宏伟)², Yongbo Yuan(袁永波)¹, Haipeng Xie(谢海鹏)¹, Yongli Gao(高永立)^1,3, Conghua Zhou(周聪华)¹

1 Hunan Key Laboratory of Super-microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, China;
2 Michael Gr & #228;tzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China;
3 Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627, USA

Received:2020-03-05 Revised:2020-04-20 Online:2020-07-05 Published:2020-07-05
Contact: Bingchu Yang, Conghua Zhou E-mail:bingchuyang@csu.edu.cn;chzhou@csu.edu.cn
Supported by:
Project supported by the Fundamental Research Funds for the Central South University, China (Grant No. 2019zzts426), the National Natural Science Foundation of China (Grant Nos. 61172047, 61774170, and 51673218), the Scientific and Technological Project of Hunan Provincial Development and Reform Commission, China, the National Science Foundation, USA (Grant Nos. CBET-1437656 and DMR-1903962), and the Innovation-Driven Project of Central South University (Grant No. 2020CX006).

摘要/Abstract

摘要： SiO₂ nanoparticles were used to regulate the crystallizing process of lead halide perovskite films prepared by the sequential deposition method, which was used in the low-temperature-processed, carbon-electrode-basing, hole-conductor-free planar perovskite solar cells. It was observed that, after adding small amount of SiO₂ precursor (1 vol%) into the lead iodide solution, performance parameters of open-circuit voltage, short-circuit current and fill factor were all upgraded, which helped to increase the power conversion efficiency (reverse scan) from 11.44(±1.83)% (optimized at 12.42%) to 14.01(±2.14)% (optimized at 15.28%, AM 1.5G, 100 mW/cm²). Transient photocurrent decay curve measurements showed that, after the incorporation of SiO₂ nanoparticles, charge extraction was accelerated, while transient photovoltage decay and dark current curve tests both showed that recombination was retarded. The improvement is due to the improved crystallinity of the perovskite film. X-ray diffraction and scanning electron microscopy studies observed that, with incorporation of amorphous SiO₂ nanoparticles, smaller crystallites were obtained in lead iodide films, while larger crystallites were achieved in the final perovskite film. This study implies that amorphous SiO₂ nanoparticles could regulate the coarsening process of the perovskite film, which provides an effective method in obtaining high quality perovskite film.

关键词: perovskite solar cell, carbon-electrode, crystallization, low temperature, SiO₂, lead iodide

Abstract: SiO₂ nanoparticles were used to regulate the crystallizing process of lead halide perovskite films prepared by the sequential deposition method, which was used in the low-temperature-processed, carbon-electrode-basing, hole-conductor-free planar perovskite solar cells. It was observed that, after adding small amount of SiO₂ precursor (1 vol%) into the lead iodide solution, performance parameters of open-circuit voltage, short-circuit current and fill factor were all upgraded, which helped to increase the power conversion efficiency (reverse scan) from 11.44(±1.83)% (optimized at 12.42%) to 14.01(±2.14)% (optimized at 15.28%, AM 1.5G, 100 mW/cm²). Transient photocurrent decay curve measurements showed that, after the incorporation of SiO₂ nanoparticles, charge extraction was accelerated, while transient photovoltage decay and dark current curve tests both showed that recombination was retarded. The improvement is due to the improved crystallinity of the perovskite film. X-ray diffraction and scanning electron microscopy studies observed that, with incorporation of amorphous SiO₂ nanoparticles, smaller crystallites were obtained in lead iodide films, while larger crystallites were achieved in the final perovskite film. This study implies that amorphous SiO₂ nanoparticles could regulate the coarsening process of the perovskite film, which provides an effective method in obtaining high quality perovskite film.

Key words: perovskite solar cell, carbon-electrode, crystallization, low temperature, SiO₂, lead iodide

中图分类号: (Photoelectric conversion)

84.60.Jt

88.40.H- (Solar cells (photovoltaics)) 88.40.hj (Efficiency and performance of solar cells) 81.10.-h (Methods of crystal growth; physics and chemistry of crystal growth, crystal morphology, and orientation)

梁泽荣, 杨兵初, 梅安意, 林思远, 韩宏伟, 袁永波, 谢海鹏, 高永立, 周聪华. SiO₂ nanoparticle-regulated crystallization of lead halide perovskite and improved efficiency of carbon-electrode-based low-temperature planar perovskite solar cells[J]. 中国物理B, 2020, 29(7): 78401-078401.

Zerong Liang(梁泽荣), Bingchu Yang(杨兵初), Anyi Mei(梅安意), Siyuan Lin(林思远), Hongwei Han(韩宏伟), Yongbo Yuan(袁永波), Haipeng Xie(谢海鹏), Yongli Gao(高永立), Conghua Zhou(周聪华). SiO₂ nanoparticle-regulated crystallization of lead halide perovskite and improved efficiency of carbon-electrode-based low-temperature planar perovskite solar cells[J]. Chin. Phys. B, 2020, 29(7): 78401-078401.

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SiO₂ nanoparticle-regulated crystallization of lead halide perovskite and improved efficiency of carbon-electrode-based low-temperature planar perovskite solar cells

SiO₂ nanoparticle-regulated crystallization of lead halide perovskite and improved efficiency of carbon-electrode-based low-temperature planar perovskite solar cells

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