Enhancement of optical absorption in organic-inorganic hybrid perovskite layer by controlling the PEDOT:PSS surface reactivity for solar cells

Organic-inorganic hybrid perovskite solar cells have emerged as a leading renewable energy technology in photovoltaic. Despite many advantageous in perovskite solar cells, the perovskite absorbing layer quality was not uniform such crystallinity, surface coverage. Here we report a novel fabrication method using UV O₂ plasma process by controlling the surface reactivity for high crystallinity perovskite absorbing layer, resulting in the enhancement of long wavelength absorption.