{"title":"Spin-Deposited Ruddlesden–Popper Polycrystalline Perovskites for Large-Area High-Sensitivity Filterless Narrowband Photodetectors with Ultrafast Response Speed","authors":"Lihua Lu, Ziang Wan, Zhongli Guo, Hongqiang Luo, Yuanyuan Tian, Sijie Jiang, Yikai Yun, Hailong Hu, Sijia Zhou, Mengyu Chen, Cheng Li, Rong Zhang","doi":"10.1002/lpor.202402077","DOIUrl":null,"url":null,"abstract":"Filterless perovskite narrowband photodetectors (PNPDs) are highly demanded in color and spectral discrimination, which are typically demonstrated by charge collection narrowing (CCN) effect of perovskite single crystals, showing a limited sensing area and slow response speed. Here, fast-response, high-sensitivity PNPDs are demonstrated using spin-deposited polycrystalline 2D (poly-2D) Ruddlesden–Popper (RP) perovskite films with thickness of ≈3.6 µm. The strong narrowband excitonic light absorption and limited charge diffusion length of poly-2D RP perovskites enable a favored long-wavelength response and a significant suppression of short-wavelength response to further strengthen the CCN effect. In particular, the photodetection properties, as well as the spectral rejection ratio and central response wavelength, can be finely tuned with an alkyl chain length of the spacer cations. The optimized devices achieve a narrow spectral response with a full-width at half-maximum of 12.7 nm, a record high peak specific detectivity of 1.09 × 10<sup>12</sup> Jones and ultrafast response speed with rise/fall times of 5.6/11.5 µs, which outperform the published similar PNPDs. Moreover, a spin-deposited large-area sensing array with 6 × 6 PNPDs is fabricated with high consistency, for efficient color and shape discrimination demonstrations. This facile and versatile approach sheds light on the practical applications of large-area high-performance filterless PNPDs.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"69 1","pages":""},"PeriodicalIF":9.8000,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Laser & Photonics Reviews","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1002/lpor.202402077","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
Filterless perovskite narrowband photodetectors (PNPDs) are highly demanded in color and spectral discrimination, which are typically demonstrated by charge collection narrowing (CCN) effect of perovskite single crystals, showing a limited sensing area and slow response speed. Here, fast-response, high-sensitivity PNPDs are demonstrated using spin-deposited polycrystalline 2D (poly-2D) Ruddlesden–Popper (RP) perovskite films with thickness of ≈3.6 µm. The strong narrowband excitonic light absorption and limited charge diffusion length of poly-2D RP perovskites enable a favored long-wavelength response and a significant suppression of short-wavelength response to further strengthen the CCN effect. In particular, the photodetection properties, as well as the spectral rejection ratio and central response wavelength, can be finely tuned with an alkyl chain length of the spacer cations. The optimized devices achieve a narrow spectral response with a full-width at half-maximum of 12.7 nm, a record high peak specific detectivity of 1.09 × 1012 Jones and ultrafast response speed with rise/fall times of 5.6/11.5 µs, which outperform the published similar PNPDs. Moreover, a spin-deposited large-area sensing array with 6 × 6 PNPDs is fabricated with high consistency, for efficient color and shape discrimination demonstrations. This facile and versatile approach sheds light on the practical applications of large-area high-performance filterless PNPDs.
期刊介绍:
Laser & Photonics Reviews is a reputable journal that publishes high-quality Reviews, original Research Articles, and Perspectives in the field of photonics and optics. It covers both theoretical and experimental aspects, including recent groundbreaking research, specific advancements, and innovative applications.
As evidence of its impact and recognition, Laser & Photonics Reviews boasts a remarkable 2022 Impact Factor of 11.0, according to the Journal Citation Reports from Clarivate Analytics (2023). Moreover, it holds impressive rankings in the InCites Journal Citation Reports: in 2021, it was ranked 6th out of 101 in the field of Optics, 15th out of 161 in Applied Physics, and 12th out of 69 in Condensed Matter Physics.
The journal uses the ISSN numbers 1863-8880 for print and 1863-8899 for online publications.