Three-wave band photosensitive inorganic/quantum dot/organic composite material solar cell

Abstract

The invention relates to a design method of a three-wave band photosensitive inorganic / quantum dot / organic composite material solar cell, which belongs to the technical field of semiconductor materials. At present, the maximum obstacle of solar energy utilization to humans is the problems of high cost and low conversion efficiency of the solar cell. The invention provides a silicon quantum dot sensitization organic / inorganic compound material and a device of the solar cell. The design method mainly comprises the following steps of: preparing a branchy zinc oxide nanometer array by a soft chemistry method, and performing self assembly on functionalized silicon quantum dots of a functional group in the zinc oxide nanometer array; and filling an organic conductive polymer (P3HT) in a nanometer structure modified by the quantum dots to form an organic / inorganic composite nanometer network structure. In the design of the composite material, the exertion of a selectron effect of the quantum dots is fully considered, silicon is used as a cross-linking agent between an organic material and an inorganic material to make the zinc oxide more firmly contacted with an organic layer, and the accelerated transfer of electric charges is facilitated. In addition, three materials serving as light absorption media in the composite structure can absorb sunshine in a layered way, and the photoelectric conversion efficiency of the composite material-based solar cell is improved. The ultraviolet / near-infrared / visible three-wave band photosensitive inorganic / quantum dot / organic composite material solar cell is realized finally.

Description

technical field [0001] The invention relates to the design of a three-band photosensitive inorganic / quantum dot / organic composite material solar cell, and belongs to the technical field of semiconductor materials. Background technique [0002] With the excessive use of non-renewable energy such as oil and coal and the deteriorating impact on the environment, energy and environmental issues are undoubtedly two major problems facing mankind. Solar energy is the most effective way to solve the above two problems. Solar energy is not only a clean and renewable new energy source, but also the most abundant energy available to human beings, and it has the advantage of being inexhaustible. Therefore, many researchers are devoted to the study of solar cells as a new technology for exploiting solar energy resources. At present, the most studied are monocrystalline silicon solar cells, thin-film solar cells, fuel-sensitized solar cells and organic solar cells. Among them, monocryst...

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Problems solved by technology

This kind of composite solar cell has not been reported at home and abroad, and it is undoubtedly still blank in China.

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