Pyro-phototronic Effect Enhanced Self-Powered Photoresponse in Lead-Free Hybrid Perovskite

IF 8.2 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Materials & Interfaces Pub Date : 2024-10-25 DOI:10.1021/acsami.4c1548210.1021/acsami.4c15482

Dongying Fu*, Yanli Ma, Shufang Wu, Qi Wang, Ruifang Zhao, Lin Pan and Junhua Luo*,

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引用次数: 0

Abstract

Pyro-phototronic effect (PPE) can significantly boost the performance of hybrid perovskite (HPs) photodetectors due to the effective modulation of photogenerated charge carrier separations, transportation, and extraction. However, there are few reports on the application of PPE in lead-free HPs. Herein, a polar lead-free HP (1,3-BMACH)BiBr₅ [1,3-BMACH = 1,3-bis(aminomethyl)cyclohexane] is synthesized and realized broadband self-powered photoresponse from X-rays to near-infrared (NIR) through the PPE. Particularly, this light-induced PPE in lead-free HPs breaks the limitation of the optical band gap, making them suitable for broadband self-powered photodetection. Under 405 nm illumination, compared with a purely photovoltaic system, I_photo+pyro is boosted by 3100%, and R and D* are both enhanced by 260% after coupled PPE. It is particularly interesting that an obvious X-ray-induced PPE phenomenon is also observed, which endows (1,3-BMACH)BiBr₅ with a high sensitivity of 154 μC Gy^–1 cm^–2 and a low detection limit of 307 nGy s^–1 under the self-powered mode. The implementation of light-induced PPE from X-rays to NIR in lead-free HPs provides a new approach for constructing environmentally friendly, broadband, and self-powered optoelectronic devices in the future.

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无铅混合过氧化物中的热释光效应增强了自供电光响应

热释光效应（PPE）能有效调节光生电荷载流子的分离、传输和萃取，从而显著提高混合包晶体（HPs）光电探测器的性能。然而，有关 PPE 在无铅高压电石中应用的报道很少。本文合成了一种极性无铅 HP (1,3-BMACH)BiBr5[1,3-BMACH = 1,3-双（氨基甲基）环己烷]，并通过 PPE 实现了从 X 射线到近红外（NIR）的宽带自供电光响应。特别是无铅高分子中的这种光诱导 PPE 打破了光带隙的限制，使其适用于宽带自供电光探测。在 405 纳米光照下，与纯光电系统相比，耦合 PPE 后的 Iphoto+pyro 增强了 3100%，R 和 D* 均增强了 260%。特别有趣的是，还观察到明显的 X 射线诱导 PPE 现象，这使得 (1,3-BMACH)BiBr5 在自供电模式下具有 154 μC Gy-1 cm-2 的高灵敏度和 307 nGy s-1 的低检测限。在无铅 HP 中实现从 X 射线到近红外的光诱导 PPE，为未来构建环保、宽带和自供电光电器件提供了一种新方法。

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来源期刊

ACS Applied Materials & Interfaces 工程技术-材料科学：综合

CiteScore

16.00

自引率

6.30%

发文量

4978

审稿时长

1.8 months

期刊介绍： ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.