A kind of solar cell and preparation method

Abstract

The invention provides a solar cell and a preparation method, and relates to the field of solar photovoltaic technology. The solar cell includes: a crystalline silicon substrate; an emitter deposited on the front of the crystalline silicon substrate; a front anti-reflection layer deposited on the front of the emitter; a front metal electrode, the front metal electrode comprising: several main Grid lines, several thin grid lines; the thin grid lines include: several grid line points and several conduction grid lines for conducting each of the grid line points, and the material of the grid line points is to penetrate the front surface The silver paste of the anti-reflection layer; the grid line point penetrates the front anti-reflection layer and is in contact with the emitter; the conduction grid line is arranged on the front side of the front anti-reflection layer and does not penetrate the front side of the anti-reflection layer The front anti-reflection layer; the material of the conductive grid line is non-penetrating silver paste; the application reduces the cost of the solar cell, improves the passivation effect, reduces the carrier coincidence, and improves the photoelectric conversion efficiency. And it is conducive to the collection of current.

Description

technical field [0001] The invention relates to the field of solar photovoltaic technology, in particular to a solar cell and a preparation method. Background technique [0002] Solar cells can reduce the impact on the environment, so they have a wide range of applications. At present, each sub-grid in the solar cell is made of silver paste capable of penetrating the front anti-reflection layer to collect current. [0003] However, due to the high cost of silver paste penetrating the front anti-reflection layer, and the complicated process of making auxiliary grid lines with silver paste penetrating the front anti-reflection layer, the consumption of silver paste penetrating the front anti-reflection layer is large, resulting in a At the same time, the above-mentioned silver paste that penetrates the front anti-reflection layer usually corrodes the front anti-reflection layer and forms an ohmic contact with the crystalline silicon substrate, which not only reduces the passi...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a solar cell and its preparation method, a solar cell and its preparation method production method, a solar cell and its preparation method production equipment, and a computer-readable storage medium, aiming to solve the problem of high solar cell cost and photoelectric conversion efficiency. low problem

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