Spirally configured cis-stilbene/fluorene hybrids as bipolar, organic sensitizers for solar cell applications |
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Authors: | Chao Wei-Shan Liao Ken-Hsien Chen Chien-Tien Huang Wei-Kai Lan Chi-Ming Diau Eric Wei-Guang |
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Affiliation: | Department of Chemistry, National Taiwan Normal University, #88, Sec. 4, Ding-jou Road, Taipei 11677, Taiwan. |
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Abstract: | Hybrids based on a dibenzosuberene core bearing a spiro-fluorene junction at the C-5 position and with amino donor and β-thiophenyl-α-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 (η) 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. |
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