Light-transmitting double-sided cadmium telluride power generation glass and preparation method thereof

Abstract

The invention discloses light-transmitting double-sided cadmium telluride power generation glass and a preparation method thereof. The device sequentially comprises, from top to bottom, a solar cell chip I, a packaging adhesive film and a solar cell chip II; each of the solar cell chip I and the solar cell chip II comprises a solar cell chip I and a solar cell chip II from top to bottom in sequence. The solar cell chip I comprises a glass substrate layer, a transparent conductive film layer, a window layer, a cadmium telluride absorption layer, a back electrode layer and a plurality of parallel laser etching grooves I, wherein the laser etching grooves I penetrate through the window layer, the cadmium telluride absorption layer and the back electrode layer of the solar cell chip I; the solar cell chip II further comprises a plurality of parallel laser etching grooves II, and the laser etching grooves II penetrate through the window layer, the cadmium telluride absorption layer and theback electrode layer of the solar cell chip II; and the laser etching groove II is vertical to the laser etching groove I. The assembly realizes double-sided power generation and light transmission, has high light transmittance, improves the power generation efficiency and reduces the production cost.

Description

technical field [0001] The invention relates to the field of photovoltaic technology, in particular to a light-transmitting double-sided cadmium telluride power generation glass and a preparation method thereof. Background technique [0002] Solar cell module is a device that directly converts light energy into electrical energy by using photovoltaic technology. Among them, cadmium telluride thin-film solar cells are widely considered to be efficient and cheap thin-film cells with simple structure, relatively low production costs, and the fastest commercialization progress. With the development of thin-film solar cells, due to their beautiful appearance, the application scenarios are becoming more and more diversified. In addition to photovoltaic power stations, the main ones are photovoltaic greenhouses, photovoltaic agriculture and photovoltaic building integration, etc., which require batteries to improve efficiency. At the same time, different scenarios can be applied. ...

AI Technical Summary

Problems solved by technology

At present, most of the existing thin-film solar cells are single-sided, and the main application is the ground power station. If it is combined with agricultural buildings, it needs to be made light-transmissive, but the power generation efficiency will decrease after light transmission. The greater the light transmittance, the lower the efficiency. Larger, this presents a barrier to widespread application

Images