Kim, Myung Hee Cho, Min Ju Kim, Kyung Hwan Hoang, Mai Ha Lee, Tae Wan Jin, Jung-Il Kang, Nam Su Yu, Jae-Woong Choi, Dong Hoon 2024-01-20T20:04:47Z 2024-01-20T20:04:47Z 2021-09-05 2009-12 1566-1199 https://pubs.kist.re.kr/handle/201004/131913 Donor-sigma-acceptor molecules of HPBT-n(PDI) (n = 1, 2, and 4) containing perylene diimide (PDI) and pi-extended 1,2,4,5-tetrakis((E)-2-(5'-hexyl-2,2'-bithiophen-5-yl)vinyl)benzene (HPBT) have been successfully synthesized for studying the self-organization of each moiety and their applications in photovoltaic devices. Interesting features were found in these molecules: the aggregation-induced crystallization in the HPBT moieties enhanced the power conversion efficiency (PCE) in the photovoltaic cell. By incorporating HPBT as the donor and PDI as the acceptor moiety, we anticipated that their high degree of independent aggregation-induced crystallization would yield electron/hole transport channels and high mobility in the desired direction of charge transport. In a photovoltaic device, HPBT-1(PDI) gave a PCE of 0.22% with an open circuit voltage ranging from 0.62 to 0.63 V. When the HPBT moiety was more hindered by the PDI moiety, less PCE was observed in HPBT-2(PDI). Addition of methanofullerene [6,6]-phenyl C61-butyric acid methyl ester (PCBM) resulted in enhancement of the PCE due to enhanced visible absorption. The device bearing HPBT-1(PDI) and PCBM (1:4 mol ratio) demonstrate much higher PCE to be around 1.60%. (C) 2009 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV PHOTOINDUCED ELECTRON-TRANSFER POLYMER SOLAR-CELLS CONJUGATED POLYMER ENERGY-TRANSFER MAGNESIUM-ION DYAD BISIMIDE COPOLYMERS SYSTEM TETRATHIAFULVALENE Organic donor-sigma-acceptor molecules based on 1,2,4,5-tetrakis((E)-2-(5 '-hexyl-2,2 '-bithiophen-5-yl)vinyl)benzene and perylene diimide derivative and their application to photovoltaic devices Article 10.1016/j.orgel.2009.08.004 1 ORGANIC ELECTRONICS, v.10, no.8, pp.1429 - 1441 ORGANIC ELECTRONICS 10 8 1429 1441 scie scopus 000272605200003 2-s2.0-71849100817 Materials Science, Multidisciplinary Physics, Applied Materials Science Physics Article PHOTOINDUCED ELECTRON-TRANSFER POLYMER SOLAR-CELLS CONJUGATED POLYMER ENERGY-TRANSFER MAGNESIUM-ION DYAD BISIMIDE COPOLYMERS SYSTEM TETRATHIAFULVALENE Donor Acceptor Crystallization Semiconductor Photovoltaic cell