Browsing by Author "Yu, Jun-Sheng"

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Photovoltaic performance of ladder-type indacenodithieno[3,2-b]thiophene-based polymers with alkoxyphenyl side chains
(2015-01-01)
Zang, Yue
;
Xu, Yun-Xiang
;
Chueh, Chu-Chen
;
Li, Chang-Zhi
;
Chen, Hsiu-Cheng
Two new ladder-type conjugated polymers, PIDTT-DFBT-EH and PIDTT-F-PhanQ-EH, are prepared through the copolymerization of heptacyclic IDTT with F-PhanQ and DFBT electron deficient moieties. The introduction of 4-(2-ethylhexyloxy)-phenyl (EHOPh) side-chains onto the polymer is beneficial for achieving high molecular weight and good solution-processability of materials. The derived polymer solar cells yielded PCEs of 5.48% (PIDTT-DFBT-EH) and 5.14% (PIDTT-F- PhanQ-EH), without engaging post-solvent or solvent additive treatments.