Heterojunction solar cell with core-shell structure based on chalcogencuprous compound and preparing method thereof

Abstract

The invention discloses a heterojunction solar cell with a core-shell structure based on a chalcogen cuprous compound and a preparing method thereof, characterizedin that silicon substrate on the upper surface is covered with an insulation layer is taken as the substrate, the quasi-one-dimensional nano-structure of the chalcogencuprous compound is dispersed on the insulation layer, a first metal membrane electrode is deposited at one end of the nano-structure to form ohmic contact, a layer of photoresist barrier layer is covered on the first metal membrane electrode, the surface of the quasi-one-dimensional nano-structure not covered by the photoresist barrier layer is replaced to indium chalcogenide by liquid-phase cation replacement, the heterojunction with core-cell structure is formed, and the photoresist is removed. A second metal membrane electrode is deposited above the indium chalcogenide to form the ohmic contact, namely, forming solar cell. The formation of heterojunction with core-cell structure can be realized by liquid-phase cation replacement in this invention, the formation process of heterojunctionis combined with the preparing process of the solar cell, the process has excellent compatibility and the process is simple and easy.

Description

technical field [0001] The invention relates to a radial heterojunction solar cell and a preparation method thereof, in particular to a core-shell structure heterojunction solar cell based on a chalcogen cuprous compound and a preparation method thereof. Background technique [0002] With the miniaturization and miniaturization of integrated circuits, the preparation of high-performance, low-power micro-nano devices has become a research hotspot. Well-crystallized quasi-one-dimensional nanostructures have attracted great attention in the field of new micro-nano devices due to their significantly lower preparation costs than bulk materials and better electrical transport properties than thin-film materials. Taking nanowire solar cells as an example, compared with bulk solar cells and thin-film solar cells, nanowire solar cells are expected to reduce the size of the device, significantly reduce material costs and manufacturing costs, and obtain comparable device performance. ...

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Problems solved by technology

[0007] In the preparation process of the above nanowire solar cells, the use of high operating costs and complex processes of high-vacuum evaporation equipment such as atomic layer deposition and pulsed laser deposition has increased the preparation cost and process complexity of nanowire solar cells and hindered their development. further promotion

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