DataVXACS Energy LettersPaper
journal article·2022-10-14

Suppressing Nonradiative Recombination in Lead–Tin Perovskite Solar Cells through Bulk and Surface Passivation to Reduce Open Circuit Voltage Losses

Kaicheng Zhang, Andreas Späth, Osbel Almora, Vincent M. Le Corre, Jonas Wortmann, Jiyun Zhang, Zhiqiang Xie, Anastasia Barabash, Maria S. Hammer, Thomas Heumüller, Jie Min, Rainer Fink, Larry Lüer, Ning Li, Christoph J. Brabec

ACS Energy Letters· Volume 7· Issue 10
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Source abstract

Abstract

Lead–Tin perovskite solar cells (Pb/Sn PSCs) are limited by the intrinsic instability of Sn(II), which tends to oxidize forming Sn vacancies in perovskite films. Herein, a Lewis base β-guanidinopropionic acid (GUA) and hydrazinium iodide (HAI) are introduced to effectively passivate the perovskite bulk and surface, respectively. The synergistic approach leads to Pb/Sn PSCs with a promising power conversion efficiency of 20.5% owing to the significantly reduced nonradiative recombination and voltage losses. As a result, the VOC × FF product of PSCs is significantly improved, which is among the highest values documented in the literature, being favorable for perovskite-based tandem applications. Additionally, the strategy demonstrated in this work could also improve the stability of PSCs by enhancing the chemical robustness of the perovskite layer. These results emphasize the significance of bulk and surface passivation in the development of efficient and stable PSCs based on Pb/Sn perovskites.
Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Chalcogenide Semiconductor Thin Films

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute of Materials for Electronics and Energy Technology (i-MEET), Department of Materials Science and Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, Martensstrasse 7, Erlangen 91058, Germany

Physical Chemistry II and Interdisciplinary Center for Molecular Materials, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstrasse 3, 91058 Erlangen, Germany

Institute of Advanced Materials (INAM), Universitat Jaume I (UJI), 12006 Castelló, Spain

Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy (HI ERN), Immerwahrstrasse 2, Erlangen 91058, Germany

The Institute for Advanced Studies, Wuhan University, Wuhan 430072, China

State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China

Funding

Deutsche Forschungsgemeinschaft · Horizon 2020 Framework Programme · China Scholarship Council · Solar Technologies go Hybrid · State of Bavaria

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