Accelerated Redox Reactions Enable Stable Tin‐Lead Mixed Perovskite Solar Cells-Reference-Cited by-同舟云学术

Accelerated Redox Reactions Enable Stable Tin‐Lead Mixed Perovskite Solar Cells

Published:2023-12-20 Issue:4 Volume:136 Page:
ISSN:0044-8249
Container-title:Angewandte Chemie
language:en
Short-container-title:Angewandte Chemie

Author:

He Dongxu¹^ORCID,Chen Peng¹^ORCID,Hao Mengmeng¹,Lyu Miaoqiang¹^ORCID,Wang Zhiliang¹^ORCID,Ding Shanshan¹,Lin Tongen¹,Zhang Chengxi¹,Wu Xin²^ORCID,Moore Evan²^ORCID,Steele Julian A.¹³^ORCID,Namdas Ebinazar B.³^ORCID,Bai Yang⁴⁵,Wang Lianzhou¹^ORCID

Affiliation:

1. School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland St Lucia 4072 Queensland Australia

2. School of Chemistry and Molecular Biosciences The University of Queensland St Lucia 4072 Queensland Australia

3. School of Mathematics and Physics The University of Queensland St Lucia 4072 Queensland Australia

4. Faculty of Materials Science and Energy Engineering/Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced Technology Chinese Academy of Sciences 518055 Shenzhen Guangdong China

5. Shenzhen Key Laboratory of Energy Materials for Carbon Neutrality 518055 Shenzhen Guangdong China

Abstract

AbstractThe facile oxidation of Sn2+ to Sn4+ poses an inherent challenge that limits the efficiency and stability of tin‐lead mixed (Sn−Pb) perovskite solar cells (PSCs) and all‐perovskite tandem devices. In this work, we discover the sustainable redox reactions enabling self‐healing Sn−Pb perovskites, where their intractable oxidation degradation can be recovered to their original state under light soaking. Quantitative and operando spectroscopies are used to investigate the redox chemistry, revealing that metallic Pb0 from the photolysis of perovskite reacts with Sn4+ to regenerate Pb2+ and Sn2+ spontaneously. Given the sluggish redox reaction kinetics, V3+/V2+ ionic pair is designed as an effective redox shuttle to accelerate the recovery of Sn−Pb perovskites from oxidation. The target Sn−Pb PSCs enabled by V3+/V2+ ionic pair deliver an improved power conversion efficiency (PCE) of 21.22 % and excellent device lifespan, retaining nearly 90 % of its initial PCE after maximum power point tracking under light for 1,000 hours.

Funder

Australian Research Council

Publisher

Wiley

Subject

General Medicine

Link

https://onlinelibrary.wiley.com/doi/pdf/10.1002/ange.202317446

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