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Organic photosensitive optoelectronic devices

A photoelectric device and device technology, applied in the field of organic photosensitive optoelectronic devices, can solve the problems of increased light absorption and inability to harvest incident light

Inactive Publication Date: 2012-08-01
UNIVERSITY OF WARWICK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this type of tandem cell, each subcell is too thin to harvest all the incident light in the wavelength range to which the subcell responds, but because there are multiple subcells, the total light absorption is increased

Method used

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  • Organic photosensitive optoelectronic devices
  • Organic photosensitive optoelectronic devices
  • Organic photosensitive optoelectronic devices

Examples

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Embodiment Construction

[0036] figure 1 show as figure 2 , 4 and 5 show layer legends. Fullerene C 60 Used as a receptor layer. Chloro-aluminium phthalocyanine and subphthalocyanine were used as the donor layer. Molybdenum oxide serves as an interlayer between the anode and the donor layer of the subcell. Bathocuproine (BCP) was used as an exciton blocking layer. The composite layer can be formed in the form of a thin translucent metal layer of silver, aluminum or titanium, or it can be a metal such as indium tin oxide (ITO), zinc indium tin oxide or gallium indium tin oxide. ) and other transparent layers of conductive oxides, or can provide discontinuous recombination centers. The transparent electrode may be a transparent layer of a conductive oxide, such as indium tin oxide (ITO), indium tin zinc oxide or indium tin gallium oxide. The translucent electrodes can be thin metallic layers of silver, aluminum or titanium.

[0037] figure 1 An organic semiconductor photovoltaic device 1 accor...

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Abstract

A photosensitive optoelectronic device (1) comprises a plurality of organic semiconductor sub-cells (10, 11, 12, 13) arranged in a stack between electrodes (3, 5), each sub-cell comprising donor material (14, 16, 23, 25) and acceptor material (15, 17, 24, 26) providing a heterojunction. There is a recombination layer (19, 22, 28) between adjacent sub-cells. The sub-cells are arranged in two groups (20, 29). The sub-cells (10, 11; 12, 13) within a group (20; 29) are responsive over substantially the same part of the light spectrum. The groups (20, 29) differ substantially from each other in respect of the parts of the light spectrum over which their respective sub-cells are responsive.

Description

technical field [0001] The present invention relates to an organic photosensitive optoelectronic device incorporating an organic semiconductor cell comprising a donor material and an acceptor material. Such devices can be used, for example, to generate electrical energy from solar radiation. [0002] The invention more particularly relates to devices in which the cells incorporate a heterojunction between a donor material and an acceptor material. Charge separation mainly occurs in organic heterojunctions. There may be, for example, a layer of acceptor material and a layer of donor material providing a substantially planar, discontinuous donor-acceptor heterojunction; or a mixture of donor and acceptor material providing an interpermeable heterojunction; or a A sandwich structure in which a mixture of donor and acceptor materials is sandwiched between layers of acceptor material and donor material. Background technique [0003] Organic photovoltaic cells have limitations....

Claims

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Application Information

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IPC IPC(8): H01L27/30
CPCB82Y10/00H01L27/302H01L51/4246H01L51/4253H01L51/0046H10K30/57H10K85/211H10K30/211H10K30/30H10K39/00
Inventor 蒂莫西·琼斯罗斯·哈顿
Owner UNIVERSITY OF WARWICK
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