2D/3D heterojunction engineering at the buried interface towards high-performance inverted methylammonium-free perovskite solar cells

Li，Haiyun1; Zhang，Cong1; Gong，Cheng1; Zhang，Daliang2; Zhang，Hong3; Zhuang，Qixin1; Yu，Xuemeng4; Gong，Shaokuan4; Chen，Xihan4; Yang，Jiabao5; Li，Xuanhua5; Li，Ru1; Li，Jingwei2; Zhou，Jinfei2; Yang，Hua6; Lin，Qianqian7; Chu，Junhao3; Grätzel，Michael8; Chen，Jiangzhao1; Zang，Zhigang1

2023

10.1038/s41560-023-01295-8

Nature Energy   Impact Factor & Quartile

2058-7546

2058-7546

The main bottlenecks limiting the photovoltaic performance and stability of inverted perovskite solar cells (PSCs) are trap-assisted non-radiative recombination losses and photochemical degradation at the interface between perovskite and charge-transport layers. We propose a strategy to manipulate the crystallization of methylammonium-free perovskite by incorporating a small amount of 2-aminoindan hydrochloride into the precursor inks. This additive also modulates carrier recombination and extraction dynamics at the buried interface via the formation of a bottom-up two-dimensional/three-dimensional heterojunction. The resultant inverted PSC achieves a power conversion efficiency of 25.12% (certified 24.6%) at laboratory scale (0.09 cm) and 22.48% at a larger area (1 cm) with negligible hysteresis. More importantly, the resulting unencapsulated devices show superior operational stability, maintaining >98% of their initial efficiency of >24% after 1,500 hours of continuous maximum power point tracking under simulated AM1.5 illumination. Meanwhile, the encapsulated devices retain >92% of initial performance for 1,200 hours under the damp-heat test (85 °C and 85% relative humidity).

SCI

English

Others

Defense Industrial Technology Development Program[JCKY2017110C0654] ; Fundamental Research Fund for the Central Universities[2022CDJQY-010] ; National Natural Science Foundation of China["11974063","61904023"] ; Support Plan for Overseas Students to Return to China for Entrepreneurship and Innovation[cx2020003] ; Fundamental Research Funds for the Central Universities["2020CDJ-LHZZ-074","2021-QZ-02"] ; Natural Science Foundation of Chongqing[3102019JC005] ; Shanghai Pujiang Program[cstc2020jcyj-msxmX0629] ; European Union[22PJ1401200] ; Research Fund of the State Key Laboratory of Solidification Processing (NPU)[881603]

Energy & Fuels ; Materials Science

Energy & Fuels ; Materials Science, Multidisciplinary

WOS:001023405800003

NATURE PORTFOLIO

2-s2.0-85164108711

Scopus

1.Key Laboratory of Optoelectronic Technology & Systems (Ministry of Education),Chongqing University,Chongqing,China
2.Multi-scale Porous Materials Center,Institute of Advanced Interdisciplinary Studies,Chongqing University,Chongqing,China
3.Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and Perception,Institute of Optoelectronics,Department of Materials Science,Fudan University,Shanghai,China
4.SUSTech Energy Institute for Carbon Neutrality,Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,China
5.State Key Laboratory of Solidification Processing,Center for Nano Energy Materials,School of Materials Science and Engineering,Northwestern Polytechnical University,Xi’an,China
6.Institute of High Energy Physics,Chinese Academy of Sciences (CAS),Beijing,China
7.Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education of China,School of Physics and Technology,Wuhan University,Wuhan,China
8.Laboratory of Photonics and Interfaces,École Polytechnique Fédérale de Lausanne,Lausanne,Switzerland

Li，Haiyun,Zhang，Cong,Gong，Cheng,et al. 2D/3D heterojunction engineering at the buried interface towards high-performance inverted methylammonium-free perovskite solar cells[J]. Nature Energy,2023,8(9).

Li，Haiyun.,Zhang，Cong.,Gong，Cheng.,Zhang，Daliang.,Zhang，Hong.,...&Zang，Zhigang.(2023).2D/3D heterojunction engineering at the buried interface towards high-performance inverted methylammonium-free perovskite solar cells.Nature Energy,8(9).

Li，Haiyun,et al."2D/3D heterojunction engineering at the buried interface towards high-performance inverted methylammonium-free perovskite solar cells".Nature Energy 8.9(2023).