Flexible two-dimensional material optical detector array and manufacturing method thereof

Abstract

The invention provides a flexible two-dimensional material optical detector array and a manufacturing method thereof. The flexible two-dimensional material optical detector array can stably work at room temperature and in an atmospheric environment. According to the flexible two-dimensional material optical detector array, the two-dimensional material NbSe2 generally has a triangular prism structure (2H phase) or an octahedral structure (1T phase), the 2H phase is semimetal, the 1T phase is a Mott insulator, a grown large-area or bulk material is generally the 2H phase, and a semimetal film of the 2H phase is suitable for being used as a photosensitive layer material of a photoelectric device due to the photoconductive characteristic of the semimetal film. And compared with a bulk material, the material has lower dark current and has response to illumination in a spectral range of 532nm to 808nm.

Description

technical field [0001] The invention belongs to the technical field of two-dimensional material photodetectors, and in particular relates to a flexible two-dimensional material photodetector array and a manufacturing method thereof. Background technique [0002] Photodetectors are devices that convert light signals (electromagnetic radiation carrying energy) into precise electrical signals (usually photocurrent and photovoltage), and high-performance photodetection technology is very important in both science and industry It has a wide range of applications in video imaging, optical communication, fire monitoring, biomedical imaging, environmental monitoring, space detection, security, night vision and motion detection. At present, most photodetectors on the market are assembled based on bulk crystalline silicon, which can work in the visible and near-infrared ranges; there are also photodetectors based on three-dimensional materials such as: silicon / Germanium (Si / Ge) hete...

AI Technical Summary

Problems solved by technology

[0004] However, the preparation and device performance of two-dimenSional layered materials (2DLMS) still face many common challenges: how to obtain high-quality and uniform materials; how to control the orientation, thickness and morphology of crystals; How to optimize device structure; how to achieve on-chip integration; how to maximize photosensitivity; how to improve repeatability

Although two-dimensional materials have excellent properties that are expected, their environmental stability is poor, and their performance cannot be maintained after deviceization. They are prone to oxidative decomposition and adsorption of impurities in the atmospheric environment.

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