Method for manufacturing rare-earth sulfide quantum-dot solar cell and application of rare-earth sulfide quantum-dot solar cell

Abstract

The invention discloses a method for manufacturing a rare-earth sulfide quantum-dot solar cell and application of the rare-earth sulfide quantum-dot solar cell. Rare-earth sulfide quantum dots are successfully compounded through characteristics of a solvothermal method and a hydrothermal method, the particle sizes of the quantum dots are adjusted by changing the reaction temperature and the reaction time, the crystal forms of the quantum dots are adjusted by controlling the hydrothermal time and the hydrothermal temperature to enable a p-type semiconductor and an n-type semiconductor of the solar cell to be matched in energy level, and the photoelectric conversion efficiency of the solar cell is improved. The method and the application have the advantages that the rare-earth sulfide quantum dots are stable in manufacturing technology, large in quantum-dot-fluorescence peak width at half height, the manufactured solar cell is easy to assemble, low in cost, wide in absorption spectrum and high in photoelectric conversion efficiency, and has the high development value.

Description

technical field [0001] The invention relates to the preparation of a sulfide quantum dot solar cell, in particular to the preparation and application of a rare earth sulfide quantum dot solar cell. Background technique [0002] As a clean and pollution-free clean energy, solar energy is widely distributed and has a huge amount, so it is used by people. Converting solar energy into electric energy has become the general trend of energy utilization. Solar energy is gradually replacing traditional fossil energy. Solar cell devices are expensive and photoelectric conversion Low efficiency has become the biggest obstacle to the utilization of solar energy. The current main work is to design solar cells with low cost and high photoelectric conversion efficiency. Quantum dots are used as quasi-zero-dimensional inorganic semiconductor materials in solar cells. Light absorbing part. Its three dimensions are all smaller than the de Broglie wavelength of bulk material excitons, and th...

AI Technical Summary

Problems solved by technology

[0002] As a clean and pollution-free clean energy, solar energy is widely distributed and has a huge amount, so it is used by people. Converting solar energy into electric energy has become the general trend of energy utilization. Solar energy is gradually replacing traditional fossil energy. Solar cell devices are expensive and photoelectric conversion Low efficiency has become the biggest obstacle to the utilization of solar energy. The current main work is to design solar cells with low cost and high photoelectric conversion efficiency. Quantum dots are used as quasi-zero-dimensional inorganic semiconductor materials in solar cells. Light absorbing part