A flexible organic photosensitive device with double-sided heterogeneous light sensing

Abstract

The invention discloses a flexible double-sided heterogeneous light-sensing organic photosensitive device. A transparent flexible organic substrate constitutes a top layer and a bottom substrate, and the middle layer substrate is an opaque flexible organic substrate. The structure between the bottom layer and the top layer consists of indium tin oxide (ITO), organic photosensitive semiconductor B, nano-metal thin layer, organic insulating layer, ITO, opaque flexible organic substrate, ITO, organic insulating layer, nano-metal thin layer, organic photosensitive semiconductor A, and ITO are stacked in sequence. Wherein, the thickness of the nano-metal thin layer is 1 nanometer, which is a metal material with a thickness of nearly 10 layers of atoms as the current transmission layer. The nano-metal thin layer has good electric field transmittance and light transmittance. Organic photosensitive semiconductor A and organic photosensitive semiconductor B are organic semiconductor materials sensitive to light of different wavelengths. By applying an electric field to the opaque flexible organic substrate, the double-sided organic photosensitive semiconductor A and the organic photosensitive semiconductor B can be controlled to sense light of different wavelengths respectively. The device uses fully flexible organic materials, which can realize low-cost large-area preparation, and can be attached to the surface of objects of different shapes to realize double-sided heterogeneous light sensing.

Description

【Technical field】 [0001] The invention relates to a flexible organic photosensitive device, in particular to a flexible organic photosensitive device with double-sided heterogeneous light sensing. 【Background technique】 [0002] Traditional flexible organic photosensitive devices usually can only sense light on one side, such as common organic photosensitive field effect transistors or photodiodes. The photosensitive active layer can only sense light on one side, and cannot simultaneously sense and distinguish light of different wavelengths on both sides. Moreover, the electric field permeability and light transmittance of electrodes of traditional organic photosensitive devices are not ideal, and these factors limit the further application of organic photosensitive devices. [0003] Compared with traditional organic photosensitive devices, a flexible double-sided heterogeneous photosensitive organic photosensitive device proposed by the present invention realizes electric f...

AI Technical Summary

Problems solved by technology

[0002] Traditional flexible organic photosensitive devices usually can only sense light on one side, such as common organic photosensitive field effect tubes or photodiodes. The photosensitive active layer can only sense light on one side, and cannot simultaneously sense and distinguish light of different wavelengths on both sides.

And the electric field permeability and light transmittance of traditional organic photosensitive device electrodes are not ideal, these factors limit the further application of organic photosensitive devices

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