A bromide substituted 2D additive for stable and efficient perovskite photovoltaics

Muhammad Sohail Abbas; Sabir Hussain; Jianqi Zhang; Boxin Wang; Zhen Wang; Chen Yang; Rashid Ahmad

doi:10.1039/d4cp00075g

A bromide substituted 2D additive for stable and efficient perovskite photovoltaics

Phys Chem Chem Phys. 2024 Mar 27;26(13):10392-10398. doi: 10.1039/d4cp00075g.

Authors

Muhammad Sohail Abbas^{1

2}, Sabir Hussain^{3

4}, Jianqi Zhang², Boxin Wang², Zhen Wang^{2

4}, Chen Yang^{5

3}, Rashid Ahmad¹

Affiliations

¹ Department of Chemistry, University of Malakand, Chakdara, Dir-L, Pakistan. gul.rao85@gmail.com.
² CAS Key Laboratory of Nanosystems and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, P. R. China.
³ MOE Key Laboratory of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China.
⁴ CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China.
⁵ University of Chinese Academy of Sciences, Beijing 100049, P. R. China.

PMID: 38502153
DOI: 10.1039/d4cp00075g

Abstract

In this article, a bromide substituted 2D layered perovskite having a repeated vertical orientation and coexisting with the bulk of a 3D perovskite is reported for the first time. This novel structure is obtained through controlled compositional engineering of the perovskite precursor solution. The photovoltaic performance of this novel 2D/3D perovskite was higher than that of 3D MAPbI₃ and a maximum photoconversion efficiency (PCE) of 17.4% was achieved. The devices fabricated using this perovskite heterostructure were stable and retained their initial PCE up to 20 days when kept open in a laboratory environment with 40% relative humidity.