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Full-inorganic oxide high-efficiency quantum dot solar battery and manufacturing method thereof

A technology of inorganic oxides and solar cells, which is applied in the manufacture of circuits, electrical components, and final products. It can solve the problems of organic materials that are afraid of water, easy to oxidize, and unfavorable development and industrialization of quantum dot solar cells, and achieve oxidation resistance. Strong, overcoming poor stability, and high photoelectric conversion efficiency

Inactive Publication Date: 2012-05-02
JILIN UNIV
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Problems solved by technology

[0004] At present, in the existing quantum dot solar cells, organic polymers and organic polymer blends are generally used as conversion layers, and organic polymers are used as carrier collection layers. Although it can improve the mobility of carriers, organic materials are afraid of Water, oxygen, easy to oxidize, need to work under special inert environmental conditions
This is very unfavorable to the development and industrialization of quantum dot solar cells

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  • Full-inorganic oxide high-efficiency quantum dot solar battery and manufacturing method thereof

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Embodiment Construction

[0029] In order to complete the above content of the invention, the following are the specific embodiments of the present invention, and further describe the technical solution of the present invention in conjunction with the accompanying drawings.

[0030] refer to figure 1 , PbSe / CdSe core-shell quantum dot thin film 4 forms a reasonable match with NiO thin film 3 and ZnO nano thin film 5 . Using NiO thin film 3 as the hole collection layer, its band gap depends on film thickness and other factors, and the highest occupied molecular orbital is generally around 5.4eV; using ZnO nano film 5 as the electron collection layer, its band gap depends on Factors such as the size of ZnO nanocrystal synthesis, the lowest unoccupied molecular orbital is generally around 4.3eV. The energy level diagram of its solar cell device is shown in figure 2 shown. In this way, the interface between the PbSe / CdSe core-shell quantum dot film 4 and the ZnO nanometer film 5 forms a heterojunction,...

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Abstract

The invention relates to a novel full-inorganic oxide high-efficiency quantum dot solar battery and a manufacturing method thereof. The battery consists of a PbSe / CdSe nuclear shell quantum dot film, a NiO film, a ZnO nano film, an anode and a cathode, wherein the NiO film serves as a collecting layer of holes; the ZnO nano film serves as a collecting layer of electrons; the PbSe / CdSe nuclear shell quantum dot film and a ZnO nano film interface constitute a heterojunction, formed potential difference helps photoproduction electrons to migrate in to the collecting layer of oxide electrons from the PbSe / CdSe nuclear shell quantum dot film, and the PbSe / CdSe nuclear shell quantum dot film and a NiO film interface constitute a heterojunction; the anode is an ITO (indium tin oxide) electrode; and the cathode is an Ag electrode. The manufacturing method comprises the following steps: 1, preparation of the NiO film; 2, synthesis and film preparation of a PbSe / CdSe nuclear shell quantum dot; 3, preparation of the ZnO nano film; and 4, evaporation of the electrodes.

Description

technical field [0001] The invention belongs to the technical field of advanced manufacturing of new energy, and relates to a novel all-inorganic oxide structure quantum dot solar cell and a manufacturing method thereof. The invention uses stable PbSe / CdSe core-shell quantum dots in the air to replace PbSe quantum dots, and forms a new type of solar battery with metal oxide thin films. technical background [0002] Solar cells are a renewable energy source that is sustainable and environmentally friendly, and fully meets the requirements of the new energy development strategy. According to the different materials used, there are four main types of solar cells: silicon solar cells; multi-element compound thin-film solar cells; organic polymer solar cells; quantum dots (QDs for short) solar cells. Silicon solar cell is a relatively mature technology at present, with high efficiency (up to 28%), but the price is high and the process is complicated; multi-component compound thi...

Claims

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Application Information

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IPC IPC(8): H01L31/0328H01L31/0352H01L31/18
CPCY02P70/50
Inventor 张宇张佳全于伟泳王一丁张铁强林晓珑冯毅
Owner JILIN UNIV
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