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

A nanowire array and solar cell technology, applied in the field of solar cells, can solve the problems of large energy loss at the interface between electrodes and electrolyte, chemical corrosion of charge recombination quantum dots, and influence of battery fill factor, etc., to improve photoelectric conversion efficiency and reduce charge Composite, Generate and Separate Guaranteed Effects

Pending Publication Date: 2021-06-04
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] see Figure 1-Figure 4 , a nanowire array solar cell with a core-shell structure based on quantum dots, comprising a bottom electrode 1 disposed on the bottom layer, the upper surface of the bottom electrode 1 is grown with several nanowires 21 made of transport materials along the vertical direction, Arranged in an array, the nanowire array forms the core layer of the solar cell, the core layer is the first transmission layer 2, and the surface of each nanowire has a number of quantum dots 3 evenly distributed, and the quantum dots form a quantum dot layer, as a solar energy The light-absorbing layer of the battery is excited by light to generate electrons and holes. The quantum dot layer and the nanowires together form a quantum dot nanowire array. A shell layer is provided outside the quantum dot nanowire array, and the shell layer is the second transport lay...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0256H01L31/0352H01L31/0216
CPCH01L31/0256H01L31/035227H01L31/02167Y02E10/50
Inventor 符春林何云飞蔡苇高荣礼王振华
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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