基于 Dion-Jacobson 相无铅双包晶的高稳定性自供电紫外线光电探测器

IF 3.3 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2024-09-24 DOI:10.1016/j.jlumin.2024.120914

Yongqiang Zhou , Lei Huang , Chunping Huang , Mengyue Wu , Weiwei Chen , Yayun Pu , Jun'an Lai , Xiaosheng Tang

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引用次数: 0

摘要

金属卤化物类包晶石材料具有出色的光电特性，为开发高性能光电器件提供了大量机会。与含铅类包晶石相比，稳定无毒的有机-无机混合包晶石在未来的商业应用中展现出更大的潜力。在这项工作中，我们开发了一种基于二维 Dion-Jacobson（DJ）相无铅双包晶石 HAAg0.5Bi0.5Br4（HA2+ = 组铵）包晶石的自供电紫外光光电探测器，其通断比高达 2.66 × 106，具有 6 × 1012 Jones 的优异比检测率和 1.32 ms/118.4 μs 的响应速度。我们深入研究了二维包晶上与光强相关的热释光效应。通过多能耦合实现了温度和光检测，大大提高了检测性能。计算得出的热释光耦合电流比单纯的光电子电流高出近 75 倍。所制备的光电探测器薄膜在正常环境下表现出极佳的稳定性，在经过 500 次循环和 90 天后，其性能值仍能保持在初始值的 90%。这项工作为未来的紫外线光电探测器提供了一种新的自供电、稳定且无毒的候选材料。

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Highly stable and self-powered ultraviolet photodetector based on Dion-Jacobson phase lead-free double perovskite

Metal halide perovskite materials present a wide array of opportunities for the development of high-performance optoelectronic devices, owing to their outstanding photoelectric properties. Compared with the lead-containing perovskites, stable and non-toxic organic-inorganic hybrid perovskites exhibit enhanced potential for future commercial applications. In this work, we developed a self-powered UV photodetector based on 2D Dion−Jacobson (DJ) phase lead-free double perovskite HAAg_0.5Bi_0.5Br₄ (HA²⁺ = histammonium) perovskite with an on-off ratio up to 2.66 × 10⁶, excellent specific detectivity of 6 × 10¹² Jones, and response speed of 1.32 ms/118.4 μs. The light intensity related pyro-phototronic effect on 2D perovskite is thoroughly investigated. Temperature and light detection are realized through multi-energy coupling, which greatly improves the detection performance. Coupled pyro-phototronic current is calculated nearly 75 folds higher than that from the photoelectronic merely. As-prepared photodetector film shows excellent stability in normal environment, maintaining a value of 90 % to the initial performance after 500 cycles and 90 days. This work provides a new self-powered, stable and non-toxic candidate for the future UV photodetectors.

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来源期刊

Journal of Luminescence 物理-光学

CiteScore

6.70

自引率

13.90%

发文量

850

审稿时长

3.8 months

期刊介绍： The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid. We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.