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Organic solar cell comprising an intermediate layer with asymmetrical transport properties

A photoelectric cell and electronic conduction technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as no known solutions to improve parallel resistance

Active Publication Date: 2012-01-04
MERCK PATENT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But so far there is no known suitable solution for increasing the shunt resistance

Method used

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  • Organic solar cell comprising an intermediate layer with asymmetrical transport properties
  • Organic solar cell comprising an intermediate layer with asymmetrical transport properties

Examples

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Embodiment Construction

[0024] figure 1 A cross section of a solar cell according to an embodiment of the present invention is shown. The solar cell is seated on a carrier material or substrate 4 . The substrate 4 can be made of glass, plastic, crystal and other materials. The substrate 4 is shown with a burst line 6 to show that the thickness of the substrate 4 is not critical to the invention and is variable. The substrate serves only to provide the solar cell with a corresponding mechanical stability and, if necessary, to provide surface protection. The side of the substrate facing the incident light is coated with an anti-reflection layer 2 to avoid loss due to reflection.

[0025] The first layer 8 on the substrate is the electrode of the solar cell. It is not important whether the electrode is a cathode or an anode.

[0026] It is assumed here, without limitation, that light enters the solar cell shown through the substrate 4 from below. Therefore, the first electrode 8 should consist of,...

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Abstract

The invention relates to an organic solar cell comprising a photoactive layer consisting of two molecular components, namely an electron donator and an electrode acceptor, and comprising two electrodes provided on both sides of the photoactive layer, whereby an intermediate layer having an asymmetric conductivity is placed between at least one of the electrodes and the photoactive layer.

Description

technical field [0001] The invention relates to an organic solar cell, which has a photosensitive layer composed of two molecular components, an electron donor and an electron acceptor, and has electrodes arranged on both sides of the photosensitive layer. Background technique [0002] For organic solar cells and photodetectors (especially bulk heterojunction Polymer-Solarzellen, high-capacity heterojunction polymer solar cells), a decrease in parallel resistance with increasing illumination intensity has been noted. This phenomenon is called photo-shunt. Light shunting leads to a decrease in fill factor and thus in solar cell efficiency. [0003] A method of increasing series resistance and contact selectivity is disclosed in WO 01 / 84645 A1. [0004] To date, however, no suitable solution for increasing the parallel resistance is known. Contents of the invention [0005] Therefore, the technical problem to be solved by the present invention is to increase the parallel ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/46H01L31/042H01L51/00H01L51/30
CPCH01L51/44H01L51/0053H01L51/0092H01L51/0037H01L51/441H01L51/4253H01L51/0047H01L51/0036H01L51/0078H01L51/0046B82Y10/00H01L51/4246H01L51/422Y02E10/549H10K85/113H10K85/1135H10K85/211H10K85/215H10K85/621H10K85/311H10K85/381H10K30/15H10K30/211H10K30/30H10K30/353H10K30/81H01L31/04H10K30/00H10K30/80
Inventor 克里斯托弗·布拉贝克克里斯托弗·沃尔多夫
Owner MERCK PATENT GMBH
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