PM6:Y6 기반 유기 태양전지를 위한 전자 수송층과 안정성 연구 동향

Abstract

Recently, the need for alternative energy sources has been increasing due to environmental pollution caused by the rising use of fossil fuels. Among alternative energies, solar cells that utilize endless sunlight are attracting significant attention. In particular, organic solar cells offer advantages such as low cost, solution processing, and flexible device fabrication. However, they suffer from low power conversion efficiency and instability due to a limited absorption spectrum. In response, high efficiency has been achieved using PM6:Y6, a photoactive layer organic semiconductor with a broad absorption range in the near-infrared region, reaching 18.2% efficiency with electron transport layers. Although organic solar cells show high efficiency, their relatively low stability limits their commercialization. This review will introduce the inorganic/organic electron transport layers of PM6:Y6-based organic solar cells and discuss the impact of light and heat among the various factors contributing to their low stability.