Fluorescent hole-selective contact for ultraviolet-stable inverted perovskite solar cells

Abstract

Fluorescent material was introduced at the hole-selective contact to simultaneously enhance the light-harvesting efficiency and photo-stability of inverted perovskite solar cells. The device achieved improved PCE via a 4.4% increase in photocurrent, while it retained ∼80% of the initial efficiency after 1000 hours of UV illumination.