{"title":"Sp-hybridized carbon enabled crystal lattice manipulation, pushing the limit of fill factor in β-CsPbI3 perovskite solar cells","authors":"","doi":"10.1016/j.matt.2024.06.047","DOIUrl":null,"url":null,"abstract":"<div><p>Due to their superior thermal stability, inorganic perovskites, especially CsPbI<sub>3</sub>, possess great application prospects. However, non-radiative recombination energy dissipation caused by defect states has always been a technical bottleneck restricting the development of perovskite solar cells. Herein, graphdiyne (GDY)<em>,</em> an <em>sp</em>-hybridized carbon framework, has been introduced to manipulate the CsPbI<sub>3</sub> perovskite crystal lattice. On the one hand, GDY serves as a Lewis base, thereby regulating the perovskite crystallization process and leading to high-quality thin film with low-defect state density. On the other hand, the GDY molecule at grain boundaries relieves the inevitable crystal lattice stress within the CsPbI<sub>3</sub> perovskite film caused by the high thermal annealing temperature. As a result, a record-high fill factor of 83.96% and an ultra-high open-circuit voltage of 1.191 V for β-phase CsPbI<sub>3</sub> perovskite solar cells are achieved simultaneously. This work provides a proficient methodology to manipulate the crystal lattice of inorganic perovskites toward high-performance photovoltaics.</p></div>","PeriodicalId":388,"journal":{"name":"Matter","volume":null,"pages":null},"PeriodicalIF":17.3000,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Matter","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2590238524003904","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Due to their superior thermal stability, inorganic perovskites, especially CsPbI3, possess great application prospects. However, non-radiative recombination energy dissipation caused by defect states has always been a technical bottleneck restricting the development of perovskite solar cells. Herein, graphdiyne (GDY), an sp-hybridized carbon framework, has been introduced to manipulate the CsPbI3 perovskite crystal lattice. On the one hand, GDY serves as a Lewis base, thereby regulating the perovskite crystallization process and leading to high-quality thin film with low-defect state density. On the other hand, the GDY molecule at grain boundaries relieves the inevitable crystal lattice stress within the CsPbI3 perovskite film caused by the high thermal annealing temperature. As a result, a record-high fill factor of 83.96% and an ultra-high open-circuit voltage of 1.191 V for β-phase CsPbI3 perovskite solar cells are achieved simultaneously. This work provides a proficient methodology to manipulate the crystal lattice of inorganic perovskites toward high-performance photovoltaics.
期刊介绍:
Matter, a monthly journal affiliated with Cell, spans the broad field of materials science from nano to macro levels,covering fundamentals to applications. Embracing groundbreaking technologies,it includes full-length research articles,reviews, perspectives,previews, opinions, personnel stories, and general editorial content.
Matter aims to be the primary resource for researchers in academia and industry, inspiring the next generation of materials scientists.