Series boost solar battery unit and preparation method thereof

Abstract

The invention belongs to the technical field of solar energy and provides a manufacturing method of a series boosting solar cell unit. According to the technical scheme, aiming to restrain electric charges generated by the SEE from diffusing in a chip, the method includes the following steps that firstly, shallow trench isolation areas are manufactured on a lightly-doped P- -type silicon substrate; secondly, an intermediately-doped N well is manufactured in a device active area between the shallow trench isolation areas; thirdly, a large-area heavily-doped P+ active area is manufactured on an N-type substrate through the ion implantation technology; fourthly, a heavily-doped N+ contact area is manufactured on the portion, outside the P+ active area, of the N-type substrate through the ion implantation technology; fifthly, a dielectric layer with a proper thickness is formed on the surface of a wafer in a deposition mode; sixthly, anodes and cathodes of two kinds of solar cells are manufactured on the upper surface of a device; seventhly, the anode and the cathode of the series boosting solar cell unit are manufactured. The method is mainly applied to design and manufacturing of the solar cells.

Description

technical field [0001] The invention belongs to the technical field of solar energy, and relates to a miniature solar cell structure compatible with a complementary metal oxide semiconductor (CMOS) process; it relates to a series of standard CMOS process technologies such as oxidation, photolithography, etching, ion implantation, metallization, etc. The preparation method of such a device, in particular, relates to a series boosted solar cell unit and a preparation method thereof. Background technique [0002] With the continuous deterioration of the global ecological environment and the increasing shortage of traditional petrochemical energy, there is an urgent need for a clean, pollution-free and abundant new energy to promote the sustainable development of human civilization and social economy. one of the scientific questions. [0003] With the continuous reduction of integrated circuit process nodes, the operating voltage and power consumption of SoCs continue to decrea...

AI Technical Summary

Problems solved by technology

[0004] Although the self-supply of electronic system energy can be achieved by using conventional discrete solar cells, the conventional manufacturing process of solar cells makes it impossible to monolithically integrate with electronic circuits based on standard CMOS processes, so the overall system is large in size and high in cost. Adapt to the development needs of miniaturization

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