[1PS-121]
우수논문발표상 응모자Co-adsorbed Monolayers Enabling Uniform Coverage for Enhanced Hole Extraction in Perovskite Photoelectronics
발표자하두헌 (중앙대학교)
연구책임자왕동환 (중앙대학교)
Abstract
This study investigates co-adsorbed self-assembled monolayers (CA-SAMs) for improving interfacial properties in perovskite optoelectronic devices. CA-SAMs induced a more negative surface potential and enhanced work function alignment, facilitating efficient hole extraction. AFM and SEM confirmed smoother morphology and larger grains, indicating improved crystallinity. Photoluminescence and electrical analyses showed reduced trap density and enhanced charge transport. XPS verified strong molecular adsorption and mixed monolayer formation. Compared to pristine SAMs, CA-SAMs suppressed molecular aggregation and voids, resulting in more uniform coverage and better energy alignment. These effects led to reduced dark current and improved device performance. The findings support CA-SAM processing as an effective strategy for interfacial engineering in perovskite photoelectronics, contributing to stable and efficient charge extraction.