DataVXAdvanced Optical MaterialsPaper
journal article·2024-03Open access

Spectrally Selective Hole Extraction Structure Enables a Self‐Powered Perovskite Solar‐Blind Photodetector with Record Responsivity and Detectivity

Hong‐Yi Hou, Shuo Tian, Jing‐De Chen, Hong‐Hui Ling, Hao Ren, Ye‐Fan Zhang, Heng‐Ru Ge, Wei‐Shuo Chen, Yan‐Qing Li, Hongying Mao, Hisao Ishii, Jian‐Xin Tang

Advanced Optical Materials· Volume 12· Issue 7
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Source abstract

Abstract

Abstract Photodiode‐type solar‐blind photodetectors (SBPDs) with the self‐powered feature hold great promise for applications in unattended secure communication, flame detection, and missile warning. However, the responsivity of SBPDs is usually limited due to the severe solar‐blind (SB) light extinction in substrates and charge transport layers. Herein, a spectrally selective hole extraction structure (SHE) is proposed for high‐efficiency perovskite SBPDs. The SHE consisting of a tandem Fabry–Perot cavity and energy‐level‐matched hole transport layer endows the device with narrowband absorption in the SB region and optimized charge extraction capability from the CsPbI2Br perovskite. The optimized SHE exhibits a peak transmittance of 27% at 255 nm and a half maximum at full width of 28 nm. Under SB light illumination, the champion device achieves a responsivity of 56.20 mA W−1 and a detectivity (D*) of 2.86 × 1013 Jones, which are the record values among the reported results. The approach demonstrated here paves the way for the optical and electrical design of perovskite photodetectors with spectrally selective detection.
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Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Quantum Dots Synthesis And Properties · Chalcogenide Semiconductor Thin Films

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Jiangsu Key Laboratory for Carbon‐Based Functional Materials & Devices Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University Suzhou Jiangsu 215123 China

Jiangsu Key Laboratory of Advanced Negative Carbon Technologies Soochow University Suzhou Jiangsu 215123 China

Macao Institute of Materials Science and Engineering (MIMSE) Faculty of Innovation Engineering (FIE) Macau University of Science and Technology Taipa Macao SAR 999078 China

School of Physics and Electronic Science East China Normal University Shanghai 200241 China

School of Physics Hangzhou Normal University Hangzhou 311121 China

Graduate School of Science and Engineering Center for Frontier Science & Molecular Chirality Research Center Chiba University Chiba 263‐8522 Japan

Funding

National Key Research and Development Program of China · National Natural Science Foundation of China · Jiangsu Provincial Department of Science and Technology · Science and Technology Innovation Plan Of Shanghai Science and Technology Commission · Fundo para o Desenvolvimento das Ciências e da Tecnologia

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