A new n-type semiconducting molecule with an asymmetric indenothiophene core for a high-performing non-fullerene type organic solar cell
作者： Young Un Kim , Gi Eun Park , Suna Choi , Dae Hee Lee , Min Ju Cho
DOI: 10.1039/C7TC00706J
关键词:
摘要: Herein, a new asymmetric n-type semiconducting molecule (PhITBD) with an indenothiophene core was designed, synthesized using tethering 2-(benzo[c][1,2,5]-thiadiazol-4-ylmethylene)-malononitrile (BM) as terminal groups, and applied to polymer solar cells (PSCs). The PSCs PhITBD displayed improved power conversion efficiencies (PCE) of 6.57% compared those the symmetric IDT-2BM. higher PCE value PhITBD-based PSC mainly attributed enhanced photovoltaic properties, Voc, Jsc, FF induced by complementary light absorption (550–600 nm range), morphological improvement, balanced charge carrier transport in active layer. Due effective control enhancement, structured n-type-conjugated molecules are potential candidates for improving performance bulk heterojunction non-fullerene type PSCs.
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