Browsing by Author "Liao, Ken-Hsien"

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Spirally configured cis-stilbene/fluorene hybrids as bipolar, organic sensitizers for solar cell applications
(2012)
Chao, Wei-Shan
;
Liao, Ken-Hsien
;
Chen, Chien-Tien
;
Huang, Wei-Kai
;
Lan, Chi-Ming
Hybrids based on a dibenzosuberene core bearing a spiro-fluorene junction at the C-5 position and with amino donor and beta-thiophenyl-alpha-cyanoacrylic acid acceptor groups at C-3 and C-7, respectively, serve as new organic sensitizer materials for solar cell applications. Solar cell devices based on these materials show a conversion efficiency (eta) of up to 6.1% (V-oc = 697 mV, J(sc) = 12.2 mA cm(-2), FF = 0.72) under AM 1.5 G conditions. The best IPCE values exceed 75% within the 450-550 nm absorption range.