Jo, Jea Woong Jung, Jae Woong Bae, Seunghwan Ko, Min Jae Kim, Heesuk Jo, Won Ho Jen, Alex K. -Y. Son, Hae Jung 2024-01-20T04:02:06Z 2024-01-20T04:02:06Z 2021-09-05 2016-06-21 2196-7350 https://pubs.kist.re.kr/handle/201004/123956 A series of anionic self-doped conjugated polyelectrolytes (CPEs) by copolymerization of a 1,4-bis(4-sulfonatobutoxy)benzene moiety with different counter monomers of thiophene, bithiophene, and terthiophene is reported. The CPEs show high conductivity of approximate to 10(-4) S cm(-1) due to being self-doped in a neutral state and exhibit excellent hole transporting property in the out-of-plane direction, compared with poly(3,4-ethylened ioxythiophene):poly(styrene-sulfonate) (PEDOT:PSS). Moreover, the CPE incorporating a less electron-donating unit from terthiophene to thiophene exhibits a higher work function and therefore, PhNa-1T incorporating thiophene shows a relatively high work function of 5.21 eV than 4.97 eV of PEDOT: PSS. This can induce a higher internal field in the solar cell device, facilitating efficient charge collection to the electrode. As a result, polymer solar cell devices incorporating the CPEs as a hole transporting layer achieve enhanced photovoltaic performances from those of the conventional PEDOT: PSS-based devices. The solar cell efficiency reaches up to 9.89%, which is among the highest values demonstrated by PCE-10-based normal-type organic solar cells. English WILEY-BLACKWELL OPEN-CIRCUIT VOLTAGE POLYANILINE GRAFT COPOLYMER ANODE INTERFACIAL LAYER HIGH-EFFICIENCY CATHODE INTERLAYER POLYMER ELECTRODES OXIDE PHOTOVOLTAGE MOBILITY Development of Self-Doped Conjugated Polyelectrolytes with Controlled Work Functions and Application to Hole Transport Layer Materials for High-Performance Organic Solar Cells Article 10.1002/admi.201500703 1 ADVANCED MATERIALS INTERFACES, v.3, no.12 ADVANCED MATERIALS INTERFACES 3 12 scie scopus 000380053600002 2-s2.0-84960153800 Chemistry, Multidisciplinary Materials Science, Multidisciplinary Chemistry Materials Science Article OPEN-CIRCUIT VOLTAGE POLYANILINE GRAFT COPOLYMER ANODE INTERFACIAL LAYER HIGH-EFFICIENCY CATHODE INTERLAYER POLYMER ELECTRODES OXIDE PHOTOVOLTAGE MOBILITY conducting polymers conjugated polyelectrolytes doping hole transport layers organic solar cells