DataVXAdvanced Functional MaterialsPaper
journal article·2024-04Open access

Ionizing Radiation Responsive Anomalous Photovoltage Drives Sensitive Self‐Powered X‐Ray Detection

Shihai You, Panpan Yu, Tingting Zhu, Cunjian Lin, Jianbo Wu, Zeng‐Kui Zhu, Chengshu Zhang, Zhou Li, Chengmin Ji, Junhua Luo

Advanced Functional Materials· Volume 34· Issue 16
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Abstract

Abstract The anomalous photovoltaic (APV) effect in organic–inorganic hybrid perovskites (OIHPs) has attracted massive interest for developing high‐performance optoelectronic devices. However, exploring the ionizing radiation responsive APV effect remains blank, let alone its potential applications. Herein, the unprecedented APV behavior in a 1D lead‐free OIHP, (4‐AMP)BiI5 (ABI, 4‐AMP = 4‐(aminomethyl)pyridine) under X‐ray irradiation is reported, exhibiting a large above‐bandgap bulk photovoltage of ≈10 V. Such a strong APV effect is closely related to the intrinsic electric polarization in polar ABI, which acts as the driving force for X‐ray‐generated carriers’ separation and transport, thus allowing it to be self‐powered. As a result, sensitive self‐powered X‐ray detectors based on high‐quality ABI single crystals are successfully fabricated, possessing a high sensitivity of 66.84 µC Gy−1 cm−2, a low detection limit of 482 nGy s−1, and superior operational stability. This work first demonstrates the ionizing radiation‐responsive APV effect in OIHPs, which further enables passive radiation detection.
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Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · 2D Materials and Applications · Quantum Dots Synthesis And Properties

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

Affiliations

State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 China

Fujian Science and Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou Fujian 350108 China

Research Institute of Frontier Science Southwest Jiaotong University Chengdu Sichuan 610031 China

Key Laboratory of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education School of Chemistry and Chemical Engineering Jiangxi Normal University Nanchang Jiangxi 330022 China

Graduate School of Advanced Science and Technology Japan Advanced Institute of Science and Technology 1‐1 Asahidai Nomi Ishikawa 923‐1292 Japan

Funding

National Natural Science Foundation of China · China Postdoctoral Science Foundation

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