Solar cell and manufacturing method thereof

Abstract

A solar cell and a manufacturing method thereof are disclosed. The solar cell includes: a first back electrode layer on a support substrate; a second back electrode layer on the first electrode layer; a light absorbing layer on the second back electrode layer; and, on the The front electrode layer on the light absorbing layer.

Description

technical field [0001] Embodiments relate to solar cells and methods of manufacturing the same. Background technique [0002] A solar cell may be defined as a device for converting light energy into electrical energy by using the photovoltaic effect in which electrons are generated when light is incident on a P-N junction diode. Solar cells can be classified according to materials constituting junction diodes: silicon solar cells; compound semiconductor solar cells, which mainly include group I-III-VI compounds or group III-V compounds; dye-sensitized solar cells; and, organic solar cells Battery. [0003] A solar cell composed of CIGS (CuInGaSe), which is one of group I-III-VI chalcopyrite-based compound semiconductors, exhibits superior light absorption, high photoelectric conversion efficiency using a thinner thickness, and superior electro-optic stability, so CIGS solar cells have attracted attention as a substitute for conventional silicon solar cells. [0004] Gener...

AI Technical Summary

Problems solved by technology

Therefore, compressive stress may occur between particles, so, the back electrode layer may be separated from the substrate

Meanwhile, if the sputtering power is reduced, the particle size is slightly reduced, so the bond strength between the back electrode layer and the substrate may be enhanced, but the stickiness retention time may be increased

Images