Zhi-Wen Gao, Deng Wang, Jun Fang, Guanhaojie Zheng, Jiayun Sun, Yiran Tao, Jie Zeng, Longbin Qiu, Xinhui Lu, Haibin Su, Yong Wang, Baomin Xu, Wallace C. H. Choy
{"title":"Eutectic molecule ligand stabilizes photoactive black phase perovskite","authors":"Zhi-Wen Gao, Deng Wang, Jun Fang, Guanhaojie Zheng, Jiayun Sun, Yiran Tao, Jie Zeng, Longbin Qiu, Xinhui Lu, Haibin Su, Yong Wang, Baomin Xu, Wallace C. H. Choy","doi":"10.1038/s41566-024-01596-8","DOIUrl":null,"url":null,"abstract":"<p>Formamidinium-rich triiodide perovskites show great promise as light-absorption layers for next photovoltaic technology. However, the intricate process of phase transformation during the crystallization of this perovskite typically results in the presence of undesired hexagonal phases, leading to a degradation in solar cell efficiency and stability. Here we report the use of a hydrogen-bonded eutectic molecule (EM) as a [PbI<sub>6</sub>]<sup>4</sup><sup>−</sup> octahedra ligand to promote the dominant formation of corner-sharing octahedra. Our results demonstrate that the increased ratio of corner-sharing octahedra to face-sharing octahedra can prompt a complete phase transformation and facilitate the formation of pure cubic structure perovskite. Perovskite solar cells based on EM-fabricated films provide a power conversion efficiency of 25.8% (certified 25.7%) and excellent stability with a <i>T</i><sub>95</sub> lifetime of ~2,000 h.</p>","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":"32 1","pages":""},"PeriodicalIF":32.3000,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nature Photonics","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1038/s41566-024-01596-8","RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
Formamidinium-rich triiodide perovskites show great promise as light-absorption layers for next photovoltaic technology. However, the intricate process of phase transformation during the crystallization of this perovskite typically results in the presence of undesired hexagonal phases, leading to a degradation in solar cell efficiency and stability. Here we report the use of a hydrogen-bonded eutectic molecule (EM) as a [PbI6]4− octahedra ligand to promote the dominant formation of corner-sharing octahedra. Our results demonstrate that the increased ratio of corner-sharing octahedra to face-sharing octahedra can prompt a complete phase transformation and facilitate the formation of pure cubic structure perovskite. Perovskite solar cells based on EM-fabricated films provide a power conversion efficiency of 25.8% (certified 25.7%) and excellent stability with a T95 lifetime of ~2,000 h.
期刊介绍：
Nature Photonics is a monthly journal dedicated to the scientific study and application of light, known as Photonics. It publishes top-quality, peer-reviewed research across all areas of light generation, manipulation, and detection.
The journal encompasses research into the fundamental properties of light and its interactions with matter, as well as the latest developments in optoelectronic devices and emerging photonics applications. Topics covered include lasers, LEDs, imaging, detectors, optoelectronic devices, quantum optics, biophotonics, optical data storage, spectroscopy, fiber optics, solar energy, displays, terahertz technology, nonlinear optics, plasmonics, nanophotonics, and X-rays.
In addition to research papers and review articles summarizing scientific findings in optoelectronics, Nature Photonics also features News and Views pieces and research highlights. It uniquely includes articles on the business aspects of the industry, such as technology commercialization and market analysis, offering a comprehensive perspective on the field.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
