{"title":"Pyramid-Shaped Perovskite Single-Crystal Growth and Application for High-Performance Photodetector","authors":"Xiaoyan Li, Chengrui Shao, Yipeng Zhao, Gang Ouyang, Wei Hu, Jianfa Zhang","doi":"10.1002/adom.202400329","DOIUrl":null,"url":null,"abstract":"<p>To boost the power conversion efficiency of silicon/perovskite tandem solar cells, pyramid-textured structures have been investigated and introduced into devices. However, high-quality pyramid-shaped single crystal preparation is an obstacle in tandem device development. Perovskite crystals obtained using general methods are cubic because of their structural symmetry and rapid growth rate. In this study, based on mass transfer boundary layer theory, a pyramid-shaped perovskite single crystal is successfully obtained using an asymmetrically spatial confinement-induced crystallization method. The synthesized pyramid crystals exhibited high crystallinity and enhanced optical absorption. A photodetector constructed using the as-grown crystal exhibited high-performance properties, including a responsivity of 9.4 A W<sup>−1</sup>, photo-to-dark current ratio of 2.3 × 10<sup>4</sup>, and detectivity of 2.1 × 10<sup>11</sup> Jones. Its unique insensitivity to the incident photon direction is also characterized. The flexible photodetector also exhibited excellent responsivity under different bending curvature radii. Additionally, the light-trapping effect and absorption superiority of pyramid crystals over cuboid crystals are well established based on a semi-empirical analytical model. This breakthrough in pyramid-shaped perovskite crystal preparation provides a promising approach for the development of novel tandem solar cells and other optoelectronic devices.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":null,"pages":null},"PeriodicalIF":8.0000,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Optical Materials","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/adom.202400329","RegionNum":2,"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
To boost the power conversion efficiency of silicon/perovskite tandem solar cells, pyramid-textured structures have been investigated and introduced into devices. However, high-quality pyramid-shaped single crystal preparation is an obstacle in tandem device development. Perovskite crystals obtained using general methods are cubic because of their structural symmetry and rapid growth rate. In this study, based on mass transfer boundary layer theory, a pyramid-shaped perovskite single crystal is successfully obtained using an asymmetrically spatial confinement-induced crystallization method. The synthesized pyramid crystals exhibited high crystallinity and enhanced optical absorption. A photodetector constructed using the as-grown crystal exhibited high-performance properties, including a responsivity of 9.4 A W−1, photo-to-dark current ratio of 2.3 × 104, and detectivity of 2.1 × 1011 Jones. Its unique insensitivity to the incident photon direction is also characterized. The flexible photodetector also exhibited excellent responsivity under different bending curvature radii. Additionally, the light-trapping effect and absorption superiority of pyramid crystals over cuboid crystals are well established based on a semi-empirical analytical model. This breakthrough in pyramid-shaped perovskite crystal preparation provides a promising approach for the development of novel tandem solar cells and other optoelectronic devices.
期刊介绍:
Advanced Optical Materials, part of the esteemed Advanced portfolio, is a unique materials science journal concentrating on all facets of light-matter interactions. For over a decade, it has been the preferred optical materials journal for significant discoveries in photonics, plasmonics, metamaterials, and more. The Advanced portfolio from Wiley is a collection of globally respected, high-impact journals that disseminate the best science from established and emerging researchers, aiding them in fulfilling their mission and amplifying the reach of their scientific discoveries.