Organic-inorganic composite day-blind type ultraviolet light detector

An inorganic composite and ultraviolet light technology, applied in the field of detectors, can solve the problems of unfavorable devices working for a long time and increasing the probability of contact

Active Publication Date: 2014-03-26
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the transparent metal electrode is used as the counter electrode and the light is incident from this side, although the detection range of the device can be extended to the wavelength band below 300nm, in order to increase the transmittance of the electromagnetic wave below 300nm in the transparent metal electrode layer as much as possible, it is generally necessary to The transparent metal electrode layer is made very thin,

Method used

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  • Organic-inorganic composite day-blind type ultraviolet light detector
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  • Organic-inorganic composite day-blind type ultraviolet light detector

Examples

Experimental program
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Effect test

Embodiment 1

[0021] The quartz substrate 1 was ultrasonically washed with detergent, isopropanol, ethanol and acetone for 5 minutes in sequence, rinsed with deionized water and dried. Vacuum-deposit a layer of metal aluminum 2 with a thickness of 2 nm on the quartz substrate, and then prepare a PEDOT:PSS (polyaniline derivative) electrode modification layer 3 with a thickness of about 40 nm by spin coating after UV-ozone treatment, 120 Take it out after baking for 15 minutes at ℃. Choose D (R is pyrazine) as the donor material, and sodium tantalate (particle size 3nm) as the acceptor material A. First prepare D with a thickness of about 30nm by spin coating on PEDOT:PSS, and then prepare A with a thickness of about 20nm by solution spin coating on the D film. The above two layers constitute an organic-inorganic composite with a planar heterojunction structure. active layer 4. Finally, LiF5 with a thickness of 1 nm and aluminum electrode 6 with a thickness of 100 nm were sequentially prep...

Embodiment 2

[0023] The quartz substrate 1 was ultrasonically washed with detergent, isopropanol, ethanol and acetone for 5 minutes in sequence, rinsed with deionized water and dried. Vacuum-deposit a layer of metallic silver 2 with a thickness of 20nm on the quartz substrate, and after UV-ozone treatment, prepare a PEDOT:PSS (polyaniline derivative) electrode modification layer 3 with a thickness of about 40nm by spin coating, at 120°C Remove from the oven after 15 minutes. Choose D (R is pyridine) as the donor material, and sodium tantalate (particle size 30nm) as the acceptor material A. A mixed film with a thickness of about 70nm was prepared by solution spin coating on PEDOT:PSS. The weight ratio of donor material D:acceptor material A in the mixed film was 95:5, forming an organic-inorganic structure with a bulk heterojunction structure. Composite active layer 4. Finally, LiF5 with a thickness of 1 nm and silver electrode 6 with a thickness of 200 nm were sequentially prepared by v...

Embodiment 3

[0025] The quartz substrate 1 was ultrasonically washed with detergent, isopropanol, ethanol and acetone for 5 minutes in sequence, rinsed with deionized water and dried. A layer of 15nm thick silver / aluminum mixture 2 was vacuum evaporated on the quartz substrate, and after being treated with ultraviolet-ozone, a PEDOT:PSS (polyaniline derivative) electrode modification layer 3 with a thickness of about 40nm was prepared by spin coating, Bake at 120°C for 15 minutes and take it out. Choose D (R is pyrimidine) as the donor material, and sodium tantalate (particle size 10nm) as the acceptor material A. First prepare D with a thickness of about 30nm on PEDOT:PSS by vacuum evaporation, and then prepare A with a thickness of about 30nm on the D film by solution spin coating. - Inorganic composite active layer 4 . Finally, a 1 nm thick LiF5 and a 300 nm gold electrode 6 are sequentially prepared by vacuum evaporation. As mentioned above, get as figure 1 The organic-inorganic co...

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Abstract

The invention discloses an organic-inorganic composite day-blind type ultraviolet light detector which comprises a quartz substrate, a transparent metal electrode layer, an electrode modified layer, an organic-inorganic composite active layer, a cathode modified layer and a metal electrode layer. The transparent metal electrode layer, the electrode modified layer, the organic-inorganic composite active layer, the cathode modified layer and the metal electrode layer are sequentially arranged from bottom to top on the quartz substrate. The organic-inorganic composite active layer is a mixed layer of an organic donor material D and an inorganic acceptor material A or is a layer formed by an organic donor material D layer and an inorganic acceptor material A layer in a stacked mode. A molecular structure general formula of the organic donor material D can be found in the specification, wherein R is pyridine, pyrazine, pyrimidine, pyridazine, triazine and triazole. According to the organic-inorganic composite day-blind type ultraviolet light detector, the carrier transfer ability of the organic donor material with an ultra wide band gap can be improved, a selective response to radiation under 300nm is achieved, and the phenomenon that radiation under 300nm is absorbed by a common ITO substrate is greatly avoided.

Description

technical field [0001] The invention relates to a detector, in particular to an organic-inorganic composite sun-blind ultraviolet detector. technical background [0002] During the passage of solar ultraviolet radiation through the atmosphere, due to strong absorption by oxygen atoms in the thermosphere and ozone in the stratosphere, only ultraviolet rays in the 300-400nm band can reach the near-surface space (below 25,000 meters), resulting in There is almost no ultraviolet radiation in the 0-300nm band in the atmosphere, and this band is the so-called "solar blind zone"; while the ultraviolet rays reaching the surface form a uniform ultraviolet background due to the scattering effect of the atmosphere, which is called the "visible blind zone". In view of the advantages of the "sun blind area" ultraviolet signal having a clean surface background, no interference from sunlight, and light signal processing burden, the detection (reception) of the "sun blind area" ultraviolet ...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/46
CPCY02E10/549H10K71/12H10K85/111H10K30/15H10K2102/00
Inventor 吴刚陈红征汪茫
Owner ZHEJIANG UNIV
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