Multiplication type organic photoelectric detector based on AIE material and preparation method thereof

A photodetector, an organic technology, applied in photovoltaic power generation, electrical solid-state devices, semiconductor/solid-state device manufacturing, etc., to achieve the effect of simple manufacturing process, high detection sensitivity, and widening applications
CN110828670AActive Publication Date: 2020-02-21SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2020-02-21

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Abstract

The invention belongs to the field of photoelectric devices, and discloses a multiplication type organic photoelectric detector based on an AIE material and a preparation method thereof. The organic photoelectric detector structure sequentially comprises a transparent substrate, an anode, a hole transport layer, an active layer, a spacer layer, an electron capture layer, an electron transport layer and a metal cathode; the active layer is a blending layer of an electron donor material AIE1 or AIE2 and an electron acceptor material C60 or C70; the spacing layer is C60 or C70; and the electron capture layer is a blending layer of C60 or C70 and MoO3. According to the invention, the AIE material is used as the active layer for the first time, the high-efficiency multiplication type organic photoelectric detector is prepared by using a trapped electron induced hole tunneling injection mechanism, the external quantum conversion efficiency is 60840%, the normalized detection rate is 3.08*1012 Jones, and the application of the AIE material in the field of photoelectric devices is expanded.
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Description

technical field

[0001] The invention belongs to the field of photoelectric devices, and in particular relates to an AIE material-based multiplication type organic photodetector and a preparation method. Background technique

[0002] A photodetector is an optoelectronic device that converts an optical signal into an electrical signal. Compared with inorganic photodetectors, organic photodetectors have attracted extensive attention because of their advantages such as light weight, low cost, adjustable response spectrum range, wide range of material selection, good flexibility, and easy fabrication into large-area devices. At present, the organic photodetectors reported in the literature are mainly photodiode type, that is, the organic material absorbs solar photons to generate excitons, which diffuse to the interface of the acceptor material and dissociate into free carriers, and then carry current The electrons are collected by the electrode, thereby generating a photogenera...

Claims

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