Nanowire array solar cell with shell-core structure based on quantum dots

Abstract

The invention discloses a nanowire array solar cell with a shell-core structure based on quantum dots. The nanowire array solar cell comprises a bottom electrode; a plurality of nanowires made of transmission materials grow on the upper surface of the substrate along the vertical direction, a nanowire array forms a core layer of the solar cell, and the core layer is a first transmission layer; a plurality of quantum dots grow on the surface of each nanowire to form a quantum dot layer, electrons and holes are generated through light excitation, and the quantum dot layers and the nanowires jointly form a quantum dot nano array; a shell layer is arranged outside the quantum dot nanowire array and is a second transmission layer, and the shell layer and the quantum dot nanowire array jointly form a shell-core structure composite nanowire array; the first transmission layer is used for transmitting one of electrons and holes, and carriers transmitted by the second transmission layer are opposite to carriers transmitted by the first transmission layer; the quantum dot layer is wrapped between the first transmission layer and the second transmission layer to separate the first transmission layer from the second transmission layer; and an upper electrode covers the shell-core structure composite nanowire array, and the shell-core structure nanowire array solar cell based on the quantum dots is assembled and formed.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a quantum dot-based shell-core structure nanowire array solar cell. Background technique [0002] Quantum dot-sensitized solar cells consist of three parts: photoanode, electrolyte, and counter electrode, and the photoanode includes conductive glass, quantum dots, and transport materials. At present, because the transmission material in this structure battery is a porous film structure, the specific surface area is not large enough, and the amount of quantum dots attached is small; at the same time, the energy loss at the interface between the electrode and the electrolyte is large, which has a great impact on the battery fill factor, causing serious problems. Charge recombination and chemical corrosion of quantum dots. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a shell-core structure...

AI Technical Summary

Problems solved by technology

At present, because the transmission material in this structure battery is a porous film structure, the specific surface area is not large enough, and the amount of quantum dots attached is small; at the same time, the energy loss at the interface between the electrode and the electrolyte is large, which has a great impact on the battery fill factor, causing serious problems. The charge recombination and chemical corrosion of quantum dots

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