6533b838fe1ef96bd12a4455
RESEARCH PRODUCT
Synthesis and photovoltaic performance of dihydrodibenzoazepine-based sensitizers with additional lateral anchor
Ying LiXu-feng ZangZafar IqbalZu-sheng HuangDai-bin KuangDerong CaoLingyun WangHerbert MeierYang-fan Xusubject
Absorption (pharmacology)Materials scienceProcess Chemistry and TechnologyGeneral Chemical EngineeringPhotovoltaic systemEnergy conversion efficiencyAnchoringMolar absorptivityPhotochemistrychemistry.chemical_compoundDye-sensitized solar cellchemistryMoietyAzepinedescription
Three novel metal-free organic dyes with dihydro-5H-dibenzo[b,f]azepine as a donor and cyanoacrylic acid as an anchoring unit were designed as an innovative linear skeleton of D-D-pi-A type of organic dyes. The conversion efficiency of the derived dye-sensitized solar cells is moderate. Among them, the dye with a hydroxy group as an additional anchoring moiety exhibited the highest UV-Vis absorption with a maximum molar extinction coefficient of 24,136 M-1 cm(-1) at lambda(max) = 458 nm and the best photovoltaic performance with an overall power conversion efficiency of 4.88%, while the dye with a carboxy group as an additional anchoring moiety exhibited the lowest conversion efficiency (4.52%). The results show that the dye loading on the film and photovoltaic performance of the dyes were influenced by the additional anchoring units. (C) 2013 Elsevier Ltd. All rights reserved.
year | journal | country | edition | language |
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2013-12-01 | Dyes and Pigments |