Broadband and Persistent Photoconductivity Immune Phototransistors Achieved by a Perovskite/IGZO Heterojunction

ACS Applied Optical Materials Pub Date : 2024-12-19 DOI:10.1021/acsaom.4c0046010.1021/acsaom.4c00460

Hongwei Hao, Yi-an Ding, Lingxue Meng, Yingze Ji, Xi Zhou, Yanzhuo Wei, Chen Chen, Dongdong Li* and Shan-Ting Zhang*,

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Abstract

Due to the wide band gap (>3 eV) of indium gallium zinc oxide (IGZO), an IGZO transistor hardly absorbs visible and near-infrared (NIR) photons. We have successfully developed a high-performance phototransistor based on the perovskite (PVK) and IGZO heterojunction. By employing a narrow band gap (1.68 eV) of the PVK layer, the PVK/IGZO phototransistor demonstrates excellent light detection in the 365–820 nm range and eliminates the undesired persistent photoconductivity (PPC) effect. Under green light of 520 nm, the device achieves an impressive photoresponsivity of 1.08 A·W^–1 and a detectivity of 4.70 × 10¹¹ Jones, positioning it among the best reported values. In particular, under NIR light of 820 nm, the device achieves a photoresponsivity of 0.07 A·W^–1 and a detectivity of 4.53 × 10¹⁰ Jones, ranking the highest among similar structures. The PVK/IGZO phototransistor displays a fast rise/decay time in the range of hundreds of milliseconds or less. This work offers a cost-effective solution for developing high-performance next-generation photodetector devices tailored to artificial intelligence applications.

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来源期刊

ACS Applied Optical Materials 材料科学-光学材料-

CiteScore

1.10

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0.00%

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期刊介绍： ACS Applied Optical Materials is an international and interdisciplinary forum to publish original experimental and theoretical including simulation and modeling research in optical materials complementing the ACS Applied Materials portfolio. With a focus on innovative applications ACS Applied Optical Materials also complements and expands the scope of existing ACS publications that focus on fundamental aspects of the interaction between light and matter in materials science including ACS Photonics Macromolecules Journal of Physical Chemistry C ACS Nano and Nano Letters.The scope of ACS Applied Optical Materials includes high quality research of an applied nature that integrates knowledge in materials science chemistry physics optical science and engineering.