A kind of chitosan/perovskite nanocomposite film and its preparation method and application

A nanocomposite and chitosan technology, applied in the fields of photoelectrochemistry and polymer chemistry, can solve the problems of poor film-forming properties of perovskite films, achieve excellent mechanical properties, improve film-forming properties, and clean the preparation process
CN104744714BActive Publication Date: 2017-06-06SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2017-06-06

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Abstract

The invention discloses a chitosan / perovskite nanometer composite film as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) preparing chitosan iodide; (2) dissolving methylamine salt, the chitosan iodide and lead iodide or lead chloride in DMF in a closed environment; introducing a protective gas; stirring for 6h to 10h at the temperature of 55 to 65 DEG C to prepare a perovskite precursor solution; (3) spin-coating the obtained perovskite precursor solution to obtain the chitosan / perovskite nanometer composite film. The prepared chitosan / perovskite nanometer composite film is applied to a solar photocell structure and has the advantages of effectively increasing the filling rate of a solar cell and also improving the energy transformation efficiency of the cell to a certain extent. The preparation method disclosed by the invention is clean, simple and free of pollution in preparation process and is suitable for large-scale production.
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Description

technical field

[0001] The invention relates to a chitosan / perovskite nanocomposite film used for photoelectric materials and a bionic preparation method and application thereof, belonging to the fields of photoelectrochemistry and polymer chemistry. Background technique

[0002] Solar cells convert solar energy into electrical energy, which has the characteristics of low cost, safety and reliability, and is a promising renewable energy source. Photosensitizers are key materials for preparing solar cells. Organometal halide perovskite is a new type of photosensitizer that has attracted wide attention in recent years. It has unique optical properties, excitonic properties, magnetic properties and electrical conductivity, and can prepare higher-performance solar cells at a lower cost. Although a large number of studies on organohalide perovskites have been reported in the past few years, several key issues still remain in the construction of perovskite-based thin-film solar c...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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