BIPV 적용을 위한 Cd-free 버퍼층을 가진 Flexible CIGS 태양전지의 특성 연구

Abstract

Human activity is the cause of the high temperature phenomenon, unstable climate change, and fine dust, which are becoming global issues recently, and the seriousness of the problem is increasing. Efforts are being made through agreements with international organizations to solve problems worldwide. To reduce CO2, the distribution and improvement of low energy consumption and low carbon emission buildings must be made.verseas, policies and related laws for zero-energy buildings are being enacted, and domestic ones are also being promoted. Generating electricity using solar energy, which is a representative renewable energy to be used in buildings, has proven to be one of the most promising solutions for buildings. BIPV (Building Integrated Photovoltaic System), an exterior solar power generation system, is a system that generates electricity by itself and can be used in buildings by installing power generation modules on the exterior walls of buildings, such as windows, walls, and balconies. The CdS buffer layer of CIGS solar cells for BIPV application contains cadmium (Cd), a toxic substance, which has been an obstacle to commercialization. For the flexibility and environmental stability of the CIGS solar cell substrate for the BIPV studied in this paper, a Zn(O,S) buffer layer was applied instead of the CdS buffer layer. The ALD method was applied to form a thin film, and the change in electrical characteristics was confirmed according to the ratio of Zn(O,S).