Shenzhen Adaps Photonics Technology Co. Ltd.

Jieyang Jia

Shuang Shuang Li

Kai Zang

A photodetector, a preparation method for a photodetector, a photodetector array and a photodetection terminal. The photodetector comprises a substrate () and an optical resonant cavity () formed on the substrate (). The optical resonant cavity () may comprise: a light absorption layer () having a light-entrance outer surface and a bottom outer surface which are opposite to each other, and an outer sidewall located between the light-entrance surface and the bottom surface; a light-strap structural layer () covering the light-entrance surface; and a light-reflection structural layer () covering the bottom outer surface and/or the outer sidewall of the light absorption layer (), wherein the light-reflection structural layer () is configured to reflect external light entering the optical resonant cavity () by means of the light-trap structural layer () to increase a light propagation distance of the external light in the light absorption layer (), thereby effectively improving the photon absorption efficiency of the photodetector.

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Shenzhen, China

Jieyang Jia