Solar cell with zinc oxide based organic/inorganic hybrid nanostructure

Abstract

The invention discloses a solar cell with zinc oxide based organic/inorganic hybrid nanostructure. The working area structure of the solar cell is as follows: a zinc oxide based nanopillar array is prepared on a substrate; by determining the arrangement and the pillar distance of the nanopillars, a two-dimensional photonic crystal structure is formed, so as to achieve absorption and antireflection to solar energy furthest; simultaneously an organic polymer material is used for filling gaps of nanopillar array along the c axis direction; the organic filling polymer between nanopillars absorbs sunlight to generate excitons which are decomposed into positive and negative current carriers and transmitted to the nanopillars of ZnO-based materials; the zinc oxide nanopillars are utilized for spontaneously separating an electron hole pair along a strong polarization field of the c axis direction; the electron holes are transmitted to the two ends of the nanopillars along the nanopillars and are collected by electrodes, thus realizing photovoltaic output without p-n nodes; the output voltage of the solar cell is only related to bandgap width of ZnO, and the solar cell can realize high breaking voltage output of devices and provide paths for improving photoelectric transformation efficiency of the devices.

Description

technical field [0001] The invention relates to a semiconductor solar cell, in particular to an oxide semiconductor nano material solar cell, which adopts an organic / inorganic hybrid nanostructure by utilizing the polarization field effect, and realizes photovoltaic output solar cell without p-n junction. Background technique [0002] At present, in the preparation technology of solar cells, how to fully absorb the full spectrum of the sun, improve the generation efficiency of photogenerated carriers, promote electron-hole separation and reduce costs has always been the core key to solve the industrial scale application of solar cells question. The emergence and development of nanotechnology provides a new solution for improving the efficiency of solar cells. In nanometer-scale materials and structures, due to the quantum confinement effect, the quasi-continuous energy band of the macroscopic solid disappears, and discrete energy levels appear in the confined direction, whi...

AI Technical Summary

Problems solved by technology

Utilizing the strong polarization effect of ZnO along the c-axis direction of the crystal and its high band gap, the technology of preparing organic / inorganic hybrid nanostructured solar cells by combining ZnO nanocolumns and organic polymers has not been reported.

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