Jo, Jea Woong Seo, Myung-Seok Park, Minwoo Kim, Jae-Yup Park, Joon Suh Han, Il Ki Ahn, Hyungju Jung, Jae Woong Sohn, Byeong-Hyeok Ko, Min Jae Son, Hae Jung 2024-01-20T04:00:37Z 2024-01-20T04:00:37Z 2021-09-04 2016-07-05 1616-301X https://pubs.kist.re.kr/handle/201004/123878 For realizing flexible perovskite solar cells (PSCs), it is important to develop low-temperature processable interlayer materials with excellent charge transporting properties. Herein, a novel polymeric hole-transport material based on 1,4-bis(4-sulfonatobutoxy)benzene and thiophene moieties (PhNa-1T) and its application as a hole-transport layer (HTL) material of high-performance inverted-type flexible PSCs are introduced. Compared with the conventionally used poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), the incorporation of PhNa-1T into HTL of the PSC device is demonstrated to be more effective for improving charge extraction from the perovskite absorber to the HTL and suppressing charge recombination in the bulk perovskite and HTL/perovskite interface. As a result, the flexible PSC using PhNa-1T achieves high photovoltaic performances with an impressive power conversion efficiency of 14.7%. This is, to the best of our knowledge, among the highest performances reported to date for inverted-type flexible PSCs. Moreover, the PhNa-1T-based flexible PSC shows much improved stability under an ambient condition than PEDOT:PSS-based PSC. It is believed that PhNa-1T is a promising candidate as an HTL material for high-performance flexible PSCs. English WILEY-V C H VERLAG GMBH SOLUTION-PROCESSED PEROVSKITE HIGH-EFFICIENCY LOW-TEMPERATURE HIGHLY EFFICIENT GRAPHENE OXIDE LAYER FILM GROWTH PASSIVATION DEPOSITION Improving Performance and Stability of Flexible Planar-Heterojunction Perovskite Solar Cells Using Polymeric Hole-Transport Material Article 10.1002/adfm.201600746 1 ADVANCED FUNCTIONAL MATERIALS, v.26, no.25, pp.4464 - 4471 ADVANCED FUNCTIONAL MATERIALS 26 25 4464 4471 scie scopus 000379905800004 2-s2.0-84979030965 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article SOLUTION-PROCESSED PEROVSKITE HIGH-EFFICIENCY LOW-TEMPERATURE HIGHLY EFFICIENT GRAPHENE OXIDE LAYER FILM GROWTH PASSIVATION DEPOSITION conjugated polymer flexible electronics hole-transport layer interfacial engineering perovskite solar cell