THIN FILM SOLAR CELL

摘要

PURPOSE: A thin film solar cell is provided to improve the absorbent rate of an optical absorbent layer using an optical trapping effect which re-transfers reflected light into the inside using a refractive index. CONSTITUTION: A material(21) is deposited on the upper side of a glass substrate on which a transparent electrode(17) is deposited. The refractive index of the material is lower than that of a glass(16). Light is absorbed in an optical absorbent layer(18) and is reflected by a rear side electrode(20) and a rear side reflector(19). The reflected light is re-transmitted to the inside of a solar cell using the refractive index of the light.