CIGS Solar Cell Having Flexible Substrate Based on Improved Supply of Na and Fabrication Method Thereof

摘要

A CIGS solar cell having a flexible substrate based on improved supply of Na. The CIGS solar cell includes a substrate formed of a flexible material, a rear electrode formed on the substrate, a CIGS light-absorption layer formed on the rear electrode, a buffer layer formed on the CIGS light-absorption layer, and a front electrode formed on the buffer layer, wherein the rear electrode comprise a single-layered Na-added metal electrode layer. A single-layered Na-added Mo electrode layer, specific resistance of which is about 1/10th the specific resistance under conditions of a process of forming a typical multilayer rear electrode, is applied to the rear electrode, thereby providing a CIGS solar cell having a flexible substrate and high conversion efficiency.

主权项

1. A CIGS solar cell having a flexible substrate based on improved supply of Na, comprising:
a substrate formed of a flexible material; a rear electrode formed on the substrate; a CIGS light-absorption layer formed on the rear electrode; a buffer layer formed on the CIGS light-absorption layer; and a front electrode formed on the buffer layer, wherein the rear electrode comprises a single-layered Na-added metal electrode layer.