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Photomultiplier organic photodetector with spectral selectivity and preparation method thereof

A photoelectric multiplication and photodetector technology, applied in the field of photodetection, can solve the problems of reduced device performance, no coverage of wavelength bands, increased manufacturing cost of organic photodetectors, and application complexity, etc., to achieve simple device structure and economical preparation methods and simple effect

Inactive Publication Date: 2018-11-27
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This will undoubtedly increase the manufacturing cost and application complexity of organic photodetectors, and will also lead to a decrease in device performance.
In addition, commercial bandpass optical filters do not cover the wavelength bands required for all applications, resulting in devices with full width at half maximum (FWHM) greater than 50nm

Method used

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  • Photomultiplier organic photodetector with spectral selectivity and preparation method thereof
  • Photomultiplier organic photodetector with spectral selectivity and preparation method thereof
  • Photomultiplier organic photodetector with spectral selectivity and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0054] The photomultiplier organic photodetector with spectral selectivity comprises: a transparent substrate 1 , a transparent electrode 2 , a transparent electrode modification layer 3 , an active layer 4 and a metal electrode 5 .

[0055] The transparent electrode 2 is a transparent ITO electrode; the transparent electrode modification layer 3 is poly(3,4-ethylenedioxythiophene)-polystyrenesulfonic acid (PEDOT:PSS); the active layer 4 is poly The blend film of (3-hexylthiophene) P3HT and fullerene derivative PCBM, wherein, the mass ratio of poly(3-hexylthiophene) P3HT and fullerene derivative PCBM is 100:1, and the thickness of active layer 4 is 2.0 μm; the metal electrode 5 is aluminum.

[0056] The preparation method of the above-mentioned organic photodetector comprises the following steps:

[0057] Step 1: Divide the area to 4cm 2 Glass serves as a transparent substrate.

[0058] Step 2: Plating indium tin oxide (ITO) on the transparent substrate, then soaking in dei...

Embodiment 2

[0065] The thickness of the blended film of the active layer 4 in Example 1 is set to 2.5 μm and 5.0 μm respectively, such as image 3 As shown, the external quantum efficiencies of the organic photodetectors in both cases are greater than 100%, and the full width at half maximum (FWHM) are both less than 30nm, and both have spectral selectivity.

[0066] Apparently, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those of ordinary skill in the art can also make There are other different forms of changes or changes, such as the preparation of the active layer, there are many options, and the electron donor material can be any one of poly(3-hexylthiophene) (P3HT) and perylene polymer (PBDT-TS1) The electron acceptor material can be any one of fullerene derivatives (PCBM, ICBA) or non-fullerene acceptors (ITIC), and it is impossibl...

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Abstract

A photomultiplier organic photodetector with spectral selectivity, comprising a transparent substrate (1); a transparent electrode (2) arranged on the transparent substrate (1); a transparent electrode modification layer arranged on the transparent electrode (2) (3); the active layer (4) arranged on the transparent electrode modification layer (3); and the metal electrode (5) arranged on the active layer (4); wherein, the active layer is electronic A blend film of a donor material and an electron acceptor material, the thickness of the film is 2.0-5.0 μm; the weight ratio of the electron donor and the electron acceptor material in the active layer is 100:1; the electron donor The material is poly(3-hexylthiophene) (P3HT) or perylene polymer (PBDT-TS1); the electron acceptor material is fullerene derivative (PCBM, ICBA) or non-fullerene acceptor (ITIC) .

Description

technical field [0001] The invention relates to the field of light detection. More specifically, it relates to a photomultiplier organic photodetector with spectral selectivity and a preparation method thereof. Background technique [0002] Organic semiconductor materials have attracted much attention because of their high extinction coefficient, low cost, green, and large-area flexible devices. With the continuous development of organic semiconductor materials, the performance of optoelectronic devices based on organic materials has also been greatly improved, and the research on organic photodetectors has also attracted people's attention. The organic photodetectors reported in the literature are mainly based on the organic photovoltaic effect. The organic material captures solar photons to generate excitons. The excitons diffuse to the interface of the acceptor material and dissociate into free carriers. The carriers are collected by the electrodes, thereby generating a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/46H01L51/48
CPCH10K71/12H10K85/00H10K30/80H10K30/00H10K30/87Y02E10/549Y02P70/50
Inventor 高米勒王文斌苗建利张福俊
Owner BEIJING JIAOTONG UNIV
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