1 + 1 > 2 Effect: Constructing Perovskite Heterostructures for Boosting Phototransistor Performance

IF 9.6 1区化学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Materials Letters Pub Date : 2025-04-09 DOI:10.1021/acsmaterialslett.4c0269210.1021/acsmaterialslett.4c02692

Feng Li*,

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引用次数: 0

Abstract

The diverse applications of photodetection technology in daily life demand photodetectors with tailored properties. The optimal photodetection system depends on its application, where aspects such as sensitivity, spectral selectivity, noise, and response speed play the critical roles. Perovskite photodetectors, mainly working on photodiodes and photoconductors, have reached great achievements covering a large spectral range from ultraviolet to infrared. To overcome existing limitations in sensitivity, noise, and speed of state-of-the-art systems, advances in device architectures and material strategies are needed. In this Review, we briefly introduce the physical mechanism of phototransistors and discuss recent developments in perovskite phototransistors. We highlight the fundamental trade-offs between parameters for single-material-based devices and clarify how heterostructure devices, consisting of an ultrahigh-mobility channel sensitized with strongly absorbing perovskites, can circumvent these limitations and lead to a next generation of highly sensitive photodetectors. Future directions for their application in high-sensitivity photodetection are proposed.

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1 + 1 >2效应：构建钙钛矿异质结构以提高光电晶体管性能

光电探测技术在日常生活中的多种应用要求光电探测器具有定制化的性能。最佳的光探测系统取决于其应用，其中灵敏度，光谱选择性，噪声和响应速度等方面起着至关重要的作用。钙钛矿光电探测器主要工作在光电二极管和光电导体上，已经取得了很大的成就，覆盖了从紫外到红外的大光谱范围。为了克服现有系统在灵敏度、噪声和速度方面的限制，需要在器件架构和材料策略方面取得进展。本文简要介绍了光电晶体管的物理机理，并讨论了钙钛矿型光电晶体管的最新研究进展。我们强调了基于单一材料的器件参数之间的基本权衡，并阐明了由超强吸收钙钛矿敏化的超高迁移率通道组成的异质结构器件如何绕过这些限制，并导致下一代高灵敏度光电探测器。展望了其在高灵敏度光探测中的应用前景。

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来源期刊

ACS Materials Letters MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

14.60

自引率

3.50%

发文量

261

期刊介绍： ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.