article.page.titleprefix Graded 2D/3D Perovskite Hetero-Structured Films with Suppressed Interfacial Recombination for Efficient and Stable Solar Cells via DABr Treatment
Date
2023-02-07
Journal Title
Journal ISSN
Volume Title
Publisher
Molecules
Abstract
Several strategies and approaches have been reported for improving the resilience and optoelectronic properties of perovskite films. However, fabricating a desirable and stable perovskite absorber layer is still a great challenge due to the optoelectronic and fabrication limitations of the materials. Here, we introduce diethylammonium bromide (DABr) as a post-treatment material for the pre-deposited methylammonium lead iodide (MAPbI3) film to fabricate a high-quality two-dimensional/three-dimensional (2D/3D) stacked hetero-structure perovskite film. The post-treatment method of DABr not only induces the small crystals of MAPbI3 perovskite secondary growth into a large crystal, but also forms a 2D capping layer on the surface of the 3D MAPbI3 film. Meanwhile, the grains and crystallization of 3D film with DABr post-treatment are significantly improved, and the surface defect density is remarkably reduced, which in turn effectively suppressed the charge recombination in the interface between the perovskite layer and the charge transport layer. The perovskite solar cell based on the DABr-treatment exhibited a significantly enhanced power conversion efficiency (PCE) of 19.10% with a notable improvement in the open circuit voltage (VOC) of 1.06 V and good stability, advocating the potential of this perovskite post-treatment approach.
Description
Open Access; Published by Molecules; https://doi.org/10.3390/molecules28041592; Muhammad Mateen, Hongxi Shi, Hao Huang, Dan Chi, Zhangbo Lu, Shihua Huang, Provincial Key Laboratory of Solid-State Optoelectronic Devices, Zhejiang Normal University, Jinhua 321004, China ; Waseem Ahmad, Division of Science and Technology, Department of Physics, University of Education Campus Dera Ghazi Khan, Multan 32200, Pakistan; Muhammad Rafiq, Institute of Biomedical Materials and Engineering, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China; Usman Ali Shah, Department of Physics and Astronomy, University of Florence, Via Giovanni Sansone 1, I-50019 Sesto Fiorentino, Italy; Sajid Sajid, Department of Chemical & Petroleum Engineering, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates; Yingke Ren, Hebei Provincial Key Laboratory of Photoelectric Control on Surface and Interface, College of Science, Hebei University of Science and Technology, Shijiazhuang 050018, China; Jongee Park, Department of Metallurgical and Materials Engineering, Atilim University, Ankara 06836, Turkey.
Keywords
DABr-treatment; diethylammonium bromide; 2D capped 3D perovskite; resilient; surface treatment
Citation
http://hdl.handle.net/20.500.14411/1952