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Solar photovoltaic electrochromic device

An electrochromic device and electrochromic technology, applied in photovoltaic power generation, electrical components, semiconductor devices, etc., can solve the problems of lower transmittance of silicon thin-film solar cells, iris effect, etc., to reduce demand for power generation and increase transmittance , reducing the effect of constituent materials or thickness

Active Publication Date: 2011-08-31
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although this two-sided electrode structure can integrate electrochromic devices and solar cells, because the charge density required for color change of inorganic materials is quite large, a relatively large voltage is required to drive the color change, and it is unavoidable to use a thicker electrode. The intrinsic layer (intrinsiclayer) to improve photoelectric conversion efficiency, even the application of multi-layer stack (tandem) to improve the open circuit voltage (Voc) of silicon thin film solar cells
In this way, the transmittance of silicon thin film solar cells is reduced
Also, since power is supplied from the edge of the electrode, there will still be an iris effect

Method used

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  • Solar photovoltaic electrochromic device

Examples

Experimental program
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Effect test

experiment example 1

[0081] Prepare the transparent glass substrate first. In addition, 0.05 grams of lithium perchlorate and 0.05 grams of methyl viologen (1,1'-dimethyl-4,4'-bipyridinium dichloride, 1,1'-dimethyl-4,4'-bipyridinium dichloride compound) was dissolved in 5 milliliters of pure water and stirred to form a uniform, transparent and colorless electrochromic solution. The electrochromic solution was coated on the above-mentioned transparent glass substrate, and then the translucent thin-film solar cell substrate with an area of ​​15 cm×15 cm was attached to the transparent glass substrate with epoxy glue. Among them, silicon thin film solar cells are used, and the silicon thin film solar cells are arranged in a matrix, and the area of ​​a single matrix is ​​about 0.25cm 2 . The thickness of the above-mentioned epoxy resin glue is about 0.5 cm, and glass balls are mixed therein as spacers to make a certain distance between the two base materials.

[0082] Among them, the semi-transpare...

experiment example 2

[0085] Prepare the transparent glass substrate first. In addition, 0.05 g of 5,10-dihydro-5,10-dimethylphenazine (5,10-dihydro-5,10-dimethylphenazine) was dissolved in 5 ml of propylene carbonate (propylenecarbonate) solvent, and stirred Dubbed into a uniform, transparent and colorless electrochromic solution. The electrochromic solution was coated on the above-mentioned transparent glass substrate, and then the translucent thin-film solar cell substrate with an area of ​​15 cm×15 cm was attached to the transparent glass substrate with epoxy glue. Among them, silicon thin film solar cells arranged in a matrix are used, and the area of ​​a single matrix is ​​about 0.25cm 2 , its structure is the same as in Example 1. The thickness of the above-mentioned epoxy resin glue is about 0.5 cm, and glass balls are mixed therein as spacers to make a certain distance between the two base materials.

[0086] The open circuit voltage Voc of the semi-transparent thin film solar cell is 0...

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Abstract

The invention provides a solar photovoltaic electrochromic device, which comprises a semitransparent thin film solar battery substrate, an electrochromic solution and a transparent nonconductive substrate, wherein the electrochromic solution is positioned between the transparent nonconductive substrate and the semitransparent thin film solar battery substrate; the semitransparent thin film solar battery substrate comprises a transparent substrate and a plurality of thin film solar batteries; and an anode and a cathode of each thin film solar battery are simultaneously taken as an anode and a cathode of the solar photovoltaic electrochromic device. A driving voltage required by the electrochromic solution is low, so the thickness of an intrinsic layer of each thin film solar battery can bereduced so as to increase the transmittance of the solar photovoltaic electrochromic device. In addition, the solar photovoltaic electrochromic device can control current output provided by the thin film solar batteries by adding the configuration of an output switch connected with the thin film solar batteries.

Description

【Technical field】 [0001] The present invention relates to an electrochromic device (electrochromic device, ECD), in particular to a solar photoelectric electrochromic device (solar photovoltaic electrochromic device). 【Background technique】 [0002] The so-called electrochromic device is a device composed of conductive substances that can cause a reversible oxidation / reduction (redox) reaction by applying an electric field or current to produce a color change. The fabrication of an electrochromic device needs to meet the following characteristics, including : The colors presented at different potentials must be easily distinguishable, the color changes quickly and uniformly, the reversible change of the device color must be able to repeat tens of thousands of times, and have high stability. Common electrochromic devices include surface confined thin film electrochromic devices and solution electrochromic devices. [0003] The structure of the surface-limited thin-film elect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/15G02F1/163H01L31/042
CPCY02E10/50
Inventor 黄莉媚
Owner IND TECH RES INST
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