Robust Interfacial Modifier for Efficient Perovskite Solar Cells: Reconstruction of Energy Alignment at Buried Interface by Self-Diffusion of Dopants

doi:10.1002/adfm.202204725

IMR OpenIR

	Robust Interfacial Modifier for Efficient Perovskite Solar Cells: Reconstruction of Energy Alignment at Buried Interface by Self-Diffusion of Dopants
	Wang, Lipeng 1,2; Xia, Jianxing 3; Yan, Zheng 4; Song, Peiquan 5; Zhen, Chao 1; Jiang, Xin 1; Shao, Guang 6; Qiu, Zeliang 7; Wei, Zhanhua 5; Qiu, Jianhang 1; Nazeeruddin, Mohammad Khaja 3
通讯作者	Xia, Jianxing(jianxing.xia@epfl.ch) ; Wei, Zhanhua(weizhanhua@hqu.edu.cn) ; Qiu, Jianhang(jhqiu@imr.ac.cn) ; Nazeeruddin, Mohammad Khaja(mdkhaja.nazeeruddin@epfl.ch)
	2022-06-22
发表期刊	ADVANCED FUNCTIONAL MATERIALS
ISSN	1616-301X
页码	10
摘要	The under-coordinated defects within perovskite and its relevant interfaces always attract and trap the free carriers via the electrostatic force, significantly limiting the charge extraction efficiency and the intrinsic stability of perovskite solar cells (PSCs). Herein, self-diffusion interfacial doping by using ionic potassium L-aspartate (PL-A) is first reported to restrain the carrier trap induced recombination via the reconstruction of energy level structure at SnO2/perovskite interface in conventional n-i-p structured PSCs. Experiments and theories are consistent with the PL-A anions that can remain at the SnO2 surface due to strong chemical adsorption. During the spin-coating of the perovskite film, the cations gradually diffuse into perovskite and endow an n-doping effect, which provides higher force and a better energy level alignment for the carrier transport. As a result, they obtained 23.74% power conversion efficiency for the PL-A modified small-area devices, with dramatically improved open-circuit voltage of 1.19 V. The corresponding large-area devices (1.05 cm(2)) achieved an efficiency of 22.23%. Furthermore, the modified devices exhibited negligible hysteresis and enhanced ambient air stability exceeding 1500 h.
关键词	defect passivation energy level alignment interfacial modifications perovskite solar cells
资助者	National Natural Science Foundation of China ; Liaoning Province Natural Science Foundation ; Young Talent Program of Shenyang National Laboratory for Materials Science ; Sichuan Science and Technology Program
DOI	10.1002/adfm.202204725
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51402308] ; Liaoning Province Natural Science Foundation[2021-MS-008] ; Young Talent Program of Shenyang National Laboratory for Materials Science[L2019F40] ; Sichuan Science and Technology Program[2020JDRC0090]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000814397400001
出版者	WILEY-V C H VERLAG GMBH
引用统计	被引频次：41[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/174697
专题	中国科学院金属研究所
通讯作者	Xia, Jianxing; Wei, Zhanhua; Qiu, Jianhang; Nazeeruddin, Mohammad Khaja
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Ecole Polytech Fed Lausanne EPFL, Inst Chem Sci & Engn, CH-1951 Sion, Switzerland 4.Shenyang Aerosp Univ, Coll Energy & Environm, Shenyang 110136, Peoples R China 5.Huaqiao Univ, Coll Mat Sci & Engn, Inst Luminescent Mat & Informat Displays, Xiamen 361021, Peoples R China 6.Sun Yat Sen Univ, Sch Chem, Guangzhou 510006, Peoples R China 7.Chengdu Univ Technol, Coll Mat & Chem & Chem Engn, Chengdu 610059, Peoples R China
推荐引用方式 GB/T 7714	Wang, Lipeng,Xia, Jianxing,Yan, Zheng,et al. Robust Interfacial Modifier for Efficient Perovskite Solar Cells: Reconstruction of Energy Alignment at Buried Interface by Self-Diffusion of Dopants[J]. ADVANCED FUNCTIONAL MATERIALS,2022:10.
APA	Wang, Lipeng.,Xia, Jianxing.,Yan, Zheng.,Song, Peiquan.,Zhen, Chao.,...&Nazeeruddin, Mohammad Khaja.(2022).Robust Interfacial Modifier for Efficient Perovskite Solar Cells: Reconstruction of Energy Alignment at Buried Interface by Self-Diffusion of Dopants.ADVANCED FUNCTIONAL MATERIALS,10.
MLA	Wang, Lipeng,et al."Robust Interfacial Modifier for Efficient Perovskite Solar Cells: Reconstruction of Energy Alignment at Buried Interface by Self-Diffusion of Dopants".ADVANCED FUNCTIONAL MATERIALS (2022):10.