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Solution‐Processable Platinum‐Acetylide‐based Small Molecular Bulk Heterojunction Solar Cells
Author(s) -
Wang Hongyu,
Chen Ming,
Jiang Bin,
Tong Weiqi,
Qian Qun,
Lin Kunhua,
Liu Feng
Publication year - 2015
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201500260
Subject(s) - chemistry , acetylide , crystallization , photovoltaic system , energy conversion efficiency , absorption (acoustics) , platinum , scattering , chemical engineering , optoelectronics , photochemistry , optics , materials science , organic chemistry , composite material , ecology , physics , biology , engineering , catalysis
Two new solution‐processable A′‐D‐‐Pt(PEt 3 ) 2 ‐‐D‐A′ structured molecules, namely, CNPT and DRPT , were synthesized and characterized for photovoltaic applications. Their optoelectronic properties were investigated by UV‐vis absorption and cyclic voltammograms. Grazing‐incidence wide‐angle X‐ray scattering and resonant soft X‐ray scattering studies revealed that the DIO additive could enhance the crystallization of CNPT and reduce the size of phase separation of CNPT :PC 71 BM blends, while the addition of DIO showed little influence on the crystallization and morphology of the DRPT :PC 71 BM blends. Processing with the DIO additive, CNPT :PC 71 BM based solar cells showed a best power conversion efficiency of 1.4%, with a J sc of 4.14 mA·cm −2 , a V oc of 0.75 V, and a fill factor of 45.4%.