Compound semiconductor solar cells having improved light transmittance by controlling thin film thickness and the method of preparing the solar cell

摘要

PURPOSE: A compound solar cell improving light transmissivity by controlling the thickness of a thin film and a manufacturing method thereof are provided to minimize reflectivity by controlling the thin film thickness of the compound solar cell. CONSTITUTION: A substrate, a lower electrode, a compound semiconductor layer, a buffer layer, a window layer and an upper electrode are successively stacked. The thin film thickness of the window layer is 355 to 428 nm. The thin film thickness of the buffer layer is 75 to 105 nm. The light transmissivity is over 80%. The window layer is a ZnO layer. The buffer layer is a CdS layer. [Reference numerals] (AA) Window layer; (BB) Buffer layer; (CC) Compound semiconductor layer