A kind of organic heterojunction photosensitive field effect transistor with temperature control switch and preparation method thereof

Abstract

The invention provides an organic heterojunction photosensitive field effect transistor with temperature control switch and its preparation method, which improves the problem of small output current of the existing organic field effect transistor and makes it have the function of temperature control switch. Function, its structure is shown in Figure 1, including substrate (1), switch electrode (2), gate electrode (3), insulating layer (4), photosensitive organic semiconductor layer (5), electron transport layer (6), A first buffer layer (701), a second buffer layer (702), a source electrode (801), a drain electrode (802), a first encapsulation layer (9), and a second encapsulation layer (10).

Description

technical field [0001] The invention belongs to the field of organic photoelectric sensors, in particular to an organic heterojunction photosensitive field effect transistor with a temperature control switch and a preparation method thereof. Background technique [0002] In recent years, organic semiconductor devices have developed rapidly, among which organic field effect transistors have shown many better characteristics than non-field effect transistors; organic field effect transistors have simple preparation processes, organic semiconductor materials can be formed into films at low temperatures, and equipment Low cost, the use of organic semiconductors can realize flexible and bendable devices, and can realize the advantages of large-area and low-cost rapid film formation; at present, many organic field effect transistors made of photosensitive materials can absorb photons to change the output current of the device. However, due to the low mobility of photosensitive org...

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Problems solved by technology

[0002] In recent years, organic semiconductor devices have developed rapidly, among which organic field effect transistors have shown many better characteristics than non-field effect transistors; organic field effect transistors have simple preparation processes, organic semiconductor materials can be formed into films at low temperatures, and equipment Low cost, the use of organic semiconductors can realize flexible and bendable devices, and can realize the advantages of large-area and low-cost rapid film formation; at present, many organic field effect transistors made of photosensitive materials can absorb photons to change the output current of the device. However, due to the low mobility of photosensitive organic materials and the high contact barrier between metal and semiconductor, the application of photosensitive organic field effect transistors is limited to a certain extent. The above problems can be solved by preparing a buffer layer between the electrode and the organic semiconductor layer.

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