Volume 137, Issue 30 e202507950
Forschungsartikel

A Universal P-Type Heterointerface for Inverted Perovskite Solar Cells

Biyun Ren

Biyun Ren

State Key Laboratory of Flexible Electronics (LoFE) & Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816 P.R. China

Search for more papers by this author
Tengfei Pan

Tengfei Pan

State Key Laboratory of Flexible Electronics (LoFE) & Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816 P.R. China

Search for more papers by this author
Zihan Gu

Zihan Gu

State Key Laboratory of Flexible Electronics (LoFE) & Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816 P.R. China

Search for more papers by this author
Xiaorong Shi

Xiaorong Shi

State Key Laboratory of Flexible Electronics (LoFE) & Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816 P.R. China

Search for more papers by this author
Xueqin Ran

Xueqin Ran

State Key Laboratory of Flexible Electronics (LoFE) & Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816 P.R. China

Search for more papers by this author
Wan Yang

Wan Yang

State Key Laboratory of Flexible Electronics (LoFE) & Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816 P.R. China

Search for more papers by this author
Meiru Duan

Meiru Duan

State Key Laboratory of Flexible Electronics (LoFE) & Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816 P.R. China

Search for more papers by this author
Yuqian Xie

Yuqian Xie

State Key Laboratory of Flexible Electronics (LoFE) & Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816 P.R. China

Search for more papers by this author
Yue Wang

Yue Wang

Fujian Cross Strait Institute of Flexible Electronics (Future Technologies), Fujian Normal University, Fuzhou, 350117 P.R. China

Search for more papers by this author
He Dong

He Dong

Frontiers Science Center for Flexible Electronics, Institute of Flexible Electronics (IFE), Northwestern Polytechnical University, 127 West Youyi Road, Xi'an, 710072 P.R. China

Search for more papers by this author
Kui Xu

Kui Xu

State Key Laboratory of Flexible Electronics (LoFE) & Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816 P.R. China

Search for more papers by this author
Zhengyi Sun

Zhengyi Sun

State Key Laboratory of Flexible Electronics (LoFE) & Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816 P.R. China

Search for more papers by this author
Yingdong Xia

Yingdong Xia

State Key Laboratory of Flexible Electronics (LoFE) & Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816 P.R. China

Search for more papers by this author
Zhongan Li

Zhongan Li

Key Laboratory for Material Chemistry of Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074 P.R. China

Search for more papers by this author
Xingyu Gao

Xingyu Gao

Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201204 P.R. China

Search for more papers by this author
Lingfeng Chao

Corresponding Author

Lingfeng Chao

State Key Laboratory of Flexible Electronics (LoFE) & Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816 P.R. China

E-mail: [email protected]; [email protected]

Search for more papers by this author
Yonghua Chen

Corresponding Author

Yonghua Chen

State Key Laboratory of Flexible Electronics (LoFE) & Institute of Advanced Materials (IAM), School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816 P.R. China

E-mail: [email protected]; [email protected]

Search for more papers by this author
First published: 20 May 2025

Abstract

Inverted perovskite solar cells with self-assembled monolayers (SAMs) have attracted extensive attention due to their high efficiency and long-term operational stability. However, the hole extraction at the SAMs/perovskite interface is generally less efficient with respect to the electron extraction. Here, we report the construction of a universal p-type heterointerface between SAMs and perovskite with heterocyclic dipolar compounds imidazole hydroiodide (ImHI). We found that the strong interaction by hydrogen bonds together with formative dipole layer were observed between ImHI and perovskite. This allows more p-type contacts with relatively small energy barriers at SAMs/perovskite heterointerfaces by downshifting the Fermi level, reducing the energy mismatch and facilitating the hole extraction. The p-type contact enhancement was further confirmed by a series of SAMs at the perovskite buried interface. As a result, a best-performing solar cell with a power conversion efficiency of 26.05% was achieved, with maintaining 96% of the initial efficiency for 2000 h under nitrogen-filled glove box, 94% of the initial efficiency for 800 h at 55 °C/55% RH, and 86% of the initial efficiency for 1000 h under continuous light stress at maximum power point.

Conflict of Interests

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.