Synthesis, characterization and photovoltaic properties of benzo[1,2-b:4,5-b′]dithiophene-bridged molecules

Xinli Liu; Shusheng Li; Jinhua Li; Jian Wang; Zhan'Ao Tan; Feng Yan; Hua Li; Yih Hsing Lo; Chung Hin CHUI; Wai Yeung WONG

doi:10.1039/c4ra10081f

Synthesis, characterization and photovoltaic properties of benzo[1,2-b:4,5-b′]dithiophene-bridged molecules

Xinli Liu, Shusheng Li, Jinhua Li, Jian Wang, Zhan'Ao Tan^*, Feng Yan, Hua Li, Yih Hsing Lo, Chung Hin CHUI, Wai Yeung WONG

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

11 Citations (Scopus)

Abstract

Four new acceptor-donor-acceptor based organic small molecules with the benzo[1,2-b:4,5-b′]dithiophene (BDT) unit as the central donor group, benzothiadiazole (BT) or fluoro-substituted benzothiadiazole as the acceptor, and different end-capping groups (BTBDT1-BTBDT4) have been synthesized and tested for solution-processed bulk-heterojunction organic solar cells. The absorption spectra, electronic energy levels, hole mobilities and solar cell performance of these compounds were investigated. All compounds show broad absorption in the visible range. The PCE of the solar cell device based on BTBDT3/PC₇₁BM (1:2, w/w) reached 3.91% with a J_sc of 10.08 mA cm^-2, a V_oc of 0.90 V and a FF of 0.43, under illumination of AM 1.5G, 100 mW cm^-2.

Original language	English
Pages (from-to)	63260-63267
Number of pages	8
Journal	RSC Advances
Volume	4
Issue number	108
DOIs	https://doi.org/10.1039/c4ra10081f
Publication status	Published - 2014

Scopus Subject Areas

Chemistry(all)
Chemical Engineering(all)

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10.1039/c4ra10081f

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title = "Synthesis, characterization and photovoltaic properties of benzo[1,2-b:4,5-b′]dithiophene-bridged molecules",

abstract = "Four new acceptor-donor-acceptor based organic small molecules with the benzo[1,2-b:4,5-b′]dithiophene (BDT) unit as the central donor group, benzothiadiazole (BT) or fluoro-substituted benzothiadiazole as the acceptor, and different end-capping groups (BTBDT1-BTBDT4) have been synthesized and tested for solution-processed bulk-heterojunction organic solar cells. The absorption spectra, electronic energy levels, hole mobilities and solar cell performance of these compounds were investigated. All compounds show broad absorption in the visible range. The PCE of the solar cell device based on BTBDT3/PC71BM (1:2, w/w) reached 3.91% with a Jsc of 10.08 mA cm-2, a Voc of 0.90 V and a FF of 0.43, under illumination of AM 1.5G, 100 mW cm-2.",

author = "Xinli Liu and Shusheng Li and Jinhua Li and Jian Wang and Zhan'Ao Tan and Feng Yan and Hua Li and Lo, {Yih Hsing} and CHUI, {Chung Hin} and WONG, {Wai Yeung}",

year = "2014",

doi = "10.1039/c4ra10081f",

language = "English",

volume = "4",

pages = "63260--63267",

journal = "RSC Advances",

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publisher = "Royal Society of Chemistry",

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T1 - Synthesis, characterization and photovoltaic properties of benzo[1,2-b:4,5-b′]dithiophene-bridged molecules

AU - Liu, Xinli

AU - Li, Shusheng

AU - Li, Jinhua

AU - Wang, Jian

AU - Tan, Zhan'Ao

AU - Yan, Feng

AU - Li, Hua

AU - Lo, Yih Hsing

AU - CHUI, Chung Hin

AU - WONG, Wai Yeung

PY - 2014

Y1 - 2014

N2 - Four new acceptor-donor-acceptor based organic small molecules with the benzo[1,2-b:4,5-b′]dithiophene (BDT) unit as the central donor group, benzothiadiazole (BT) or fluoro-substituted benzothiadiazole as the acceptor, and different end-capping groups (BTBDT1-BTBDT4) have been synthesized and tested for solution-processed bulk-heterojunction organic solar cells. The absorption spectra, electronic energy levels, hole mobilities and solar cell performance of these compounds were investigated. All compounds show broad absorption in the visible range. The PCE of the solar cell device based on BTBDT3/PC71BM (1:2, w/w) reached 3.91% with a Jsc of 10.08 mA cm-2, a Voc of 0.90 V and a FF of 0.43, under illumination of AM 1.5G, 100 mW cm-2.

AB - Four new acceptor-donor-acceptor based organic small molecules with the benzo[1,2-b:4,5-b′]dithiophene (BDT) unit as the central donor group, benzothiadiazole (BT) or fluoro-substituted benzothiadiazole as the acceptor, and different end-capping groups (BTBDT1-BTBDT4) have been synthesized and tested for solution-processed bulk-heterojunction organic solar cells. The absorption spectra, electronic energy levels, hole mobilities and solar cell performance of these compounds were investigated. All compounds show broad absorption in the visible range. The PCE of the solar cell device based on BTBDT3/PC71BM (1:2, w/w) reached 3.91% with a Jsc of 10.08 mA cm-2, a Voc of 0.90 V and a FF of 0.43, under illumination of AM 1.5G, 100 mW cm-2.

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U2 - 10.1039/c4ra10081f

DO - 10.1039/c4ra10081f

M3 - Journal article

AN - SCOPUS:84914097332

SN - 2046-2069

VL - 4

SP - 63260

EP - 63267

JO - RSC Advances

JF - RSC Advances

IS - 108

ER -

Synthesis, characterization and photovoltaic properties of benzo[1,2-b:4,5-b′]dithiophene-bridged molecules

Abstract

Scopus Subject Areas

UN SDGs

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