SOLAR CELL HAVING QUANTUM WELL STRUCTURE AND METHOD FOR MANUFACTURING SAME

摘要

The present invention provides a practical solar cell having a multiple quantum well structure and a method for manufacturing the same, and the heterostructure solar cell is capable of reducing the transmission loss of solar light and the short wavelength loss of solar light by inserting a multi-layer quantum well structure between p- and n-type semiconductors, thereby obtaining a high-efficiency solar cell which can overcome the limitations of theoretical conversion efficiency and reducing manufacturing costs.

主权项

1. A method for manufacturing a solar cell having a multiple quantum well structure, comprising:
forming a quantum well layer by successively and alternately forming a thin-film insulating layer having a thickness of 1˜10 nm and a thin-film semiconductor layer having a thickness of 1˜10 nm on a p-type or n-type silicon substrate for as many as several˜several tens of cycles; forming an emitter layer on the quantum well layer by using silicon having a silicon type different from that of the substrate; forming a metallic finger electrode on the emitter layer; forming a SiNx layer as an anti-reflection layer on an entire surface of the metallic finger electrode; and forming a passivation layer on a bottom surface of the substrate.