Solar cell and method for manufacturing the same

US9343599B2 · kind B2 · utility

Assignee

• LG ELECTRONICS INC. · KR

Inventors

• Juhwa Cheong · Seoul, KR
• Hyunjung Park · Seoul, KR
• Junyong Ahn · Seoul, KR
• Seongeun Lee · Seoul, KR
• Jiweon Jeong · Seoul, KR

Key dates

• Filing date: Jan 2, 2014
• Grant date: May 17, 2016
• Expiry date: May 11, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/52

Abstract

A method of manufacturing a solar cell includes forming jagged portions non-uniformly on a surface of a substrate, forming a first type semiconductor and a second type semiconductor in the substrate, forming a first electrode to contact the first type semiconductor, and forming a second electrode to contact the second type semiconductor. An etchant used in a wet etching process in manufacturing the solar cell includes about 0.5 wt % to 10 wt % of HF, about 30 wt % to 60 wt % of HNO3, and up to about 30 wt % of acetic acid based on total weight of the etchant.