Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 13, Issue 6, Pages 7152-7160Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c19885
Keywords
pyrene; porphyrin; isomer; dye-sensitized solar cell; photovoltaic properties; blocking effect; umbrella effect
Funding
- Ministry of Science and Technology, Taiwan [MOST 1082113-M-260-001-MY3]
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Four pyrene-porphyrins were synthesized to investigate the influence of different isomers on the photovoltaic performance of dye-sensitized solar cells. The 1,8-isomer showed superior efficiency, possibly due to the "umbrella effect". These findings offer insights into isomeric dye design for future applications.
Four pyrene-porphyrins were synthesized to study the isomer effect on the photovoltaic performance of dye-sensitized solar cells. One of these porphyrins is conjugated with a terminal pyrene, whereas the other three are each attached with a pyrene bearing an extra donor group. According to the positions of the extra donor and porphyrin core on pyrene, the 1,6-, 1,8-, and 2,7-isomers were compared for their fundamental and photovoltaic properties. For fundamental properties, UV-visible absorption, fluorescence emission, electrochemistry, and DFT calculations were carried out. For photovoltaic measurements, the seemingly inferior 1,8-isomer outperforms others with an overall efficiency of 10.30% under one-sun irradiation. Superior photovoltaic performance of the 1,8-isomeric dye may be related to the so-called umbrella effect. The findings of this work may provide insight into isomeric dye design for future applications.
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