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Improved photovoltaic performance of star-shaped molecules with a triphenylamine core by tuning the substituted position of the carbazolyl unit at the terminal

Two star-shaped molecules of TPA(BT2Cz) 3 and TPA(BT3Cz) 3 with a triphenyl-amine (TPA) core were designed and synthesized, in which 2- and 3-carbazolyl units (2Cz and 3Cz) are attached to the benzothiadiazole (BT) arms as planar terminal groups, respectively. Although both molecules show a similar... Full description

Journal Title: Journal of Materials Chemistry A 2015, Vol.3(20), pp.10883-10889
Main Author: Zhou, Pei
Other Authors: Dang, Dongfeng , Xiao, Manjun , Wang, Qiong , Zhong, Juan , Tan, Hua , Pei, Yong , Yang, Renqiang , Zhu, Weiguo
Format: Electronic Article Electronic Article
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ID: DOI: 10.1039/c5ta00166h
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title: Improved photovoltaic performance of star-shaped molecules with a triphenylamine core by tuning the substituted position of the carbazolyl unit at the terminal
format: Article
creator:
  • Zhou, Pei
  • Dang, Dongfeng
  • Xiao, Manjun
  • Wang, Qiong
  • Zhong, Juan
  • Tan, Hua
  • Pei, Yong
  • Yang, Renqiang
  • Zhu, Weiguo
subjects:
  • Maximum Power
  • Terminals
  • Performance Enhancement
  • Solar Cells
  • Tuning
  • Covering
  • Conversion
  • Sustainability
  • Photovoltaic Cells
ispartof: Journal of Materials Chemistry A, 2015, Vol.3(20), pp.10883-10889
description: Two star-shaped molecules of TPA(BT2Cz) 3 and TPA(BT3Cz) 3 with a triphenyl-amine (TPA) core were designed and synthesized, in which 2- and 3-carbazolyl units (2Cz and 3Cz) are attached to the benzothiadiazole (BT) arms as planar terminal groups, respectively. Although both molecules show a similar broad UV-Vis absorption covering from 300 nm to 560 nm, different photovoltaic performances were observed owing to the varied linked positions of terminal carbazolyl units. In contrast to TPA(BT2Cz) 3 -based solar cells, solution-processable organic solar cells (OSCs) based on TPA(BT3Cz) 3 exhibited better photovoltaic performance with the maximum power conversion efficiency up to 3.94% and an enhanced short-circuit current of 8.80 mA cm 2 . This work further demonstrates that tuning the substituted position of the terminal carbazolyl group can significantly improve the photovoltaic performance of its resulting small molecules.
language:
source:
identifier: DOI: 10.1039/c5ta00166h
fulltext: fulltext
issn:
  • 2050-7488
  • 2050-7496
  • 20507496
  • 20507488
url: Link


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titleImproved photovoltaic performance of star-shaped molecules with a triphenylamine core by tuning the substituted position of the carbazolyl unit at the terminal
creatorZhou, Pei ; Dang, Dongfeng ; Xiao, Manjun ; Wang, Qiong ; Zhong, Juan ; Tan, Hua ; Pei, Yong ; Yang, Renqiang ; Zhu, Weiguo
ispartofJournal of Materials Chemistry A, 2015, Vol.3(20), pp.10883-10889
identifierDOI: 10.1039/c5ta00166h
descriptionTwo star-shaped molecules of TPA(BT2Cz) 3 and TPA(BT3Cz) 3 with a triphenyl-amine (TPA) core were designed and synthesized, in which 2- and 3-carbazolyl units (2Cz and 3Cz) are attached to the benzothiadiazole (BT) arms as planar terminal groups, respectively. Although both molecules show a similar broad UV-Vis absorption covering from 300 nm to 560 nm, different photovoltaic performances were observed owing to the varied linked positions of terminal carbazolyl units. In contrast to TPA(BT2Cz) 3 -based solar cells, solution-processable organic solar cells (OSCs) based on TPA(BT3Cz) 3 exhibited better photovoltaic performance with the maximum power conversion efficiency up to 3.94% and an enhanced short-circuit current of 8.80 mA cm 2 . This work further demonstrates that tuning the substituted position of the terminal carbazolyl group can significantly improve the photovoltaic performance of its resulting small molecules.
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subjectMaximum Power ; Terminals ; Performance Enhancement ; Solar Cells ; Tuning ; Covering ; Conversion ; Sustainability ; Photovoltaic Cells;
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titleImproved photovoltaic performance of star-shaped molecules with a triphenylamine core by tuning the substituted position of the carbazolyl unit at the terminal
descriptionTwo star-shaped molecules of TPA(BT2Cz) 3 and TPA(BT3Cz) 3 with a triphenyl-amine (TPA) core were designed and synthesized, in which 2- and 3-carbazolyl units (2Cz and 3Cz) are attached to the benzothiadiazole (BT) arms as planar terminal groups, respectively. Although both molecules show a similar broad UV-Vis absorption covering from 300 nm to 560 nm, different photovoltaic performances were observed owing to the varied linked positions of terminal carbazolyl units. In contrast to TPA(BT2Cz) 3 -based solar cells, solution-processable organic solar cells (OSCs) based on TPA(BT3Cz) 3 exhibited better photovoltaic performance with the maximum power conversion efficiency up to 3.94% and an enhanced short-circuit current of 8.80 mA cm 2 . This work further demonstrates that tuning the substituted position of the terminal carbazolyl group can significantly improve the photovoltaic performance of its resulting small molecules.
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titleImproved photovoltaic performance of star-shaped molecules with a triphenylamine core by tuning the substituted position of the carbazolyl unit at the terminal
authorZhou, Pei ; Dang, Dongfeng ; Xiao, Manjun ; Wang, Qiong ; Zhong, Juan ; Tan, Hua ; Pei, Yong ; Yang, Renqiang ; Zhu, Weiguo
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abstractTwo star-shaped molecules of TPA(BT2Cz) 3 and TPA(BT3Cz) 3 with a triphenyl-amine (TPA) core were designed and synthesized, in which 2- and 3-carbazolyl units (2Cz and 3Cz) are attached to the benzothiadiazole (BT) arms as planar terminal groups, respectively. Although both molecules show a similar broad UV-Vis absorption covering from 300 nm to 560 nm, different photovoltaic performances were observed owing to the varied linked positions of terminal carbazolyl units. In contrast to TPA(BT2Cz) 3 -based solar cells, solution-processable organic solar cells (OSCs) based on TPA(BT3Cz) 3 exhibited better photovoltaic performance with the maximum power conversion efficiency up to 3.94% and an enhanced short-circuit current of 8.80 mA cm 2 . This work further demonstrates that tuning the substituted position of the terminal carbazolyl group can significantly improve the photovoltaic performance of its resulting small molecules.
doi10.1039/c5ta00166h
pages10883-10889
date2015-05-12