[1PS-019]
우수논문발표상 응모자Rational Backbone Planarization for Doping-Resilient Polymeric Hole Transport Materials toward Stable and Scalable Perovskite Solar Cells
발표자김찬혁 (포항공과대학교)
연구책임자김민준 (경기대학교)
Abstract
As perovskite solar cells (PSCs) move toward commercialization, stability and large-area processing depend on hole transport material (HTM) doping stability and film uniformity. We report PDVB14, a PTAA-based random copolymer incorporating divinylbenzene (DVB) units via Buchwald–Hartwig C–N coupling. DVB increases backbone planarity and enables more delocalized radical-cation states, while π-aggregation supports charge transport across a broad doping window. As a hole transport layer, PDVB14 shows minimal dopant dependence, reaching a 23.5% champion PCE and retaining 20.6% at 1.0 cm2. It delivers nearly twofold higher thermal, light, and humidity stability than PTAA. Dopant-distribution mapping reveals highly uniform Li profiles across 6 × 6 cm2 films, demonstrating excellent compatibility with scalable processing. This design overcomes PTAA limitations and enables a doping-resilient and scalable polymeric HTM platform for next-generation PSC manufacturing.