Organic heterojunction thin film photoresistors and photosensitive voltage dividers based on organic conjugated molecules

A voltage divider and heterojunction technology, applied in the field of materials, can solve problems such as damage to the human respiratory tract, liver and kidneys, and limit the use of cadmium, and achieve the effect of cheap, low-cost, and wide-ranging sources
CN104868055BActive Publication Date: 2017-07-14INST OF CHEM CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF CHEM CHINESE ACAD OF SCI
Publication Date
2017-07-14

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Abstract

The invention discloses an organic heterojunction film photoresistor and a photosensitive voltage divider based on organic conjugated molecules. The photosensitive voltage divider consists of a base, a substrate, a patterned metal electrode layer, and a resistance layer from bottom to top; wherein, the resistance layer is composed of a coplanar heterojunction film and a phthalocyanine film II, and the The heterojunction film and the phthalocyanine film II are connected in series; the heterojunction film and the phthalocyanine film II share a section of metal electrode. In the present invention, two cheap and common organic dyes, copper phthalocyanine / nitrogen, nitrogen-dioctyl-3,4,9,10-peryleneimide are used for the first time to prepare an organic film photosensitive film with a linear dynamic range up to 81dB. Resistors, and a voltage divider that is extremely sensitive to weak light irradiation was obtained, which laid the foundation for future weak light detectors and light detection circuits constructed with all organic conjugated molecules.
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Description

technical field

[0001] The invention belongs to the field of materials, and relates to an organic heterojunction thin-film photoresistor and a photosensitive voltage divider based on organic conjugated molecules. Background technique

[0002] A photoresistor, also known as a photovoltaic cell, is a basic electronic component that converts light radiation into an electrical signal. Specifically, when the incident light whose wavelength matches the band gap of the active layer semiconductor irradiates the photosensitive resistor, its resistance value will decrease sharply, which is called photoconductivity. In national life and production, by embedding photoresistors into circuits, light-controlled automatic switch street lights, burglar alarms, and electronic shutters for industrial cameras can be obtained. Photoresistors sensitive to visible light bands (380nm-780nm) usually use cadmium compounds such as cadmium sulfide and cadmium selenide as photoconductors. Long-term ex...

Claims

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