Title
An Interface Co-modification Strategy for Improving the Efficiency and Stability of CsPbI3Perovskite Solar Cells
Author
Guan, Hui (Lanzhou University)
Lei, Yutian (Lanzhou University)
Wu, Qiyuan (Lanzhou University)
Zhou, Xufeng (Liaocheng University)
Wang, H. (TU Delft Photovoltaic Materials and Devices)
Wang, Gang (Ningbo University)
Li, Wenquan (Qinghai Normal University)
Jin, Zhiwen (Lanzhou University)
Lan, Wei (Lanzhou University)
Date
2022
Abstract
Interface engineering is a simple and effective strategy for improving the photovoltaic performance and stability of perovskite solar cells (PSCs). Herein, an interface co-modification strategy is proposed, using [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) and 2-fluoro-1,4-phenylenediammonium iodide (2FPPD) to modify the electron transport layer (ETL)/perovskite (PVK) and the PVK/hole transport layer (HTL) interfaces, respectively. A series of characterizations demonstrate that the PCBM&2FPPD interface co-modification strategy effectively enhances the extraction and transport efficiency of carriers at the interface, passivates surface defects, inhibits the nonradiative recombination of carriers, and simultaneously inhibits ion migration. Moreover, this strategy improves the crystallinity and surface hydrophobicity of PVK and optimizes the energy level alignment of PSCs. As a result, all photovoltaic parameters are improved after optimization, where the power conversion efficiency (PCE) of PSCs has increased from 17.01% to 18.36%. Meanwhile, the optimized PSCs show excellent environmental stability, which can be stably stored in air (RH = 10-20%) for about 800 h.
Subject
CsPbI
defect passivation
interface engineering
perovskite solar cell
photovoltaic performance
stability
To reference this document use:
http://resolver.tudelft.nl/uuid:99dc4a89-524a-4740-95f0-bf3af94012a9
DOI
https://doi.org/10.1021/acsaem.2c02096
Embargo date
2023-04-27
ISSN
2574-0962
Source
ACS Applied Energy Materials, 5 (11), 13419-13428
Bibliographical note
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
Part of collection
Institutional Repository
Document type
journal article
Rights
© 2022 Hui Guan, Yutian Lei, Qiyuan Wu, Xufeng Zhou, H. Wang, Gang Wang, Wenquan Li, Zhiwen Jin, Wei Lan