3D printed tapered electrode structure of solar cell

Abstract

The invention relates to a 3D printed tapered electrode structure of a solar cell. The 3D printed tapered electrode structure comprises a substrate, a main gate line and an auxiliary gate line; the main gate line and the auxiliary gate line both are formed by virtue of 3D printing; the main gate line and the auxiliary gate line are arranged on the substrate perpendicularly and crosswise; the auxiliary gate line is of a segmental structure; the main gate line comprises a main gate line conductive layer and a main gate line seed layer; the main gate line seed layer is laid on the substrate; the main gate line conductive layer is laid on the main gate line seed layer; the auxiliary gate line comprises an auxiliary gate line conductive layer and an auxiliary gate line seed layer; the auxiliary gate line seed layer is laid on the substrate, while the auxiliary gate line conductive layer is laid on the auxiliary gate line seed layer; the auxiliary gate line conductive layer is a tapered lamellar body. Compared with the prior art, the gate lines of the electrode structure are elaborate and controllable in morphology, the closer to the main gate line the auxiliary gate line is, the higher the auxiliary gate line is; as a result, the current carrier collecting capability of the auxiliary gate line is enhanced, and the electrical conductivity of the gate lines are improved.

Description

technical field [0001] The invention relates to an electrode structure of a solar cell, in particular to a 3D printed solar cell tapered electrode structure. Background technique [0002] With the development of industry and the increasingly active human activities, human consumption of energy is increasing day by day, while underground non-renewable mineral energy is becoming increasingly scarce, and the contradiction between energy supply and demand is increasingly intensified. Energy issues have become one of the key issues affecting human survival and development. one. Compared with many renewable energy sources such as wind power generation, ocean power generation, and biomass power generation, solar photovoltaic power generation is clean, safe, extensive, noise-free, pollution-free, energy is available everywhere, no need to consume fuel, and no mechanical rotation There are many incomparable advantages such as easy maintenance, unattended operation, short constructio...

AI Technical Summary

Problems solved by technology

In this electrode structure, the same conductive silver paste is used for the main grid line and the sub grid line, and the sub grid lines at different positions also have similar cross-sectional shapes. In the external circuit, if the auxiliary grid lines at different positions from the main grid line are called to maintain uniform conductivity, the carrier collection effect will be affected

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