Thiadiazole quinoxaline-based copolymers with ∼1.0 eV bandgap for ternary polymer solar cells

Jiangsheng Yu; Qiaoshi An; Jiefeng Hai; Xuemei Nie; Baojing Zhou; Fujun Zhang; Weihua Tang

doi:10.1016/j.polymer.2015.09.047

Thiadiazole quinoxaline-based copolymers with ∼1.0 eV bandgap for ternary polymer solar cells

Jiangsheng Yu, Qiaoshi An, Jiefeng Hai, Xuemei Nie, Baojing Zhou, Fujun Zhang^*, Weihua Tang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

A new strong electron-deficient acceptor unit, 4,9-bis(5-bromothiophen-2-yl)-6,7-bis(5-dodecylthiophen-2-yl)-[1,2,5]thiadiazolo[3,4-g]quinoxaline (TQxT), is designed. Three TQxT based new conjugated polymers have been further developed by alternating with benzo[1,2-b:4,5-b′]dithiophene or naphtho[1,2-b:5,6-b′]difuran. Featuring ultra low bandgaps of 1.03-1.10 eV, these polymers exhibit absorption spectra beyond near-infrared (NIR) region. The polymer:PC₇₁BM (1:2) solar cells deliver a best power conversion efficiency (PCE) of 0.43%. The doping of 9 wt% PBDTT-TQxP into P3HT:PC₇₁BM (1:2) blend, however, leads to a highest PCE of 3.58% for the resultant ternary solar cells, corresponding to ∼22% improvement in comparison to 2.93% PCE for P3HT:PC₇₁BM binary cells.

Original language	English
Pages (from-to)	12-20
Number of pages	9
Journal	Polymer
Volume	79
DOIs	https://doi.org/10.1016/j.polymer.2015.09.047
Publication status	Published - 19 Nov 2015
Externally published	Yes

Keywords

Ternary polymer solar cells
Thiadiazole quinoxaline-based copolymers
Ultra low bandgaps

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10.1016/j.polymer.2015.09.047

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@article{1b18a352b56741f2968aaddf4f8438df,

title = "Thiadiazole quinoxaline-based copolymers with ∼1.0 eV bandgap for ternary polymer solar cells",

abstract = "A new strong electron-deficient acceptor unit, 4,9-bis(5-bromothiophen-2-yl)-6,7-bis(5-dodecylthiophen-2-yl)-[1,2,5]thiadiazolo[3,4-g]quinoxaline (TQxT), is designed. Three TQxT based new conjugated polymers have been further developed by alternating with benzo[1,2-b:4,5-b′]dithiophene or naphtho[1,2-b:5,6-b′]difuran. Featuring ultra low bandgaps of 1.03-1.10 eV, these polymers exhibit absorption spectra beyond near-infrared (NIR) region. The polymer:PC71BM (1:2) solar cells deliver a best power conversion efficiency (PCE) of 0.43%. The doping of 9 wt% PBDTT-TQxP into P3HT:PC71BM (1:2) blend, however, leads to a highest PCE of 3.58% for the resultant ternary solar cells, corresponding to ∼22% improvement in comparison to 2.93% PCE for P3HT:PC71BM binary cells.",

keywords = "Ternary polymer solar cells, Thiadiazole quinoxaline-based copolymers, Ultra low bandgaps",

author = "Jiangsheng Yu and Qiaoshi An and Jiefeng Hai and Xuemei Nie and Baojing Zhou and Fujun Zhang and Weihua Tang",

year = "2015",

month = nov,

day = "19",

doi = "10.1016/j.polymer.2015.09.047",

language = "English",

volume = "79",

pages = "12--20",

journal = "Polymer",

issn = "0032-3861",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Thiadiazole quinoxaline-based copolymers with ∼1.0 eV bandgap for ternary polymer solar cells

AU - Yu, Jiangsheng

AU - An, Qiaoshi

AU - Hai, Jiefeng

AU - Nie, Xuemei

AU - Zhou, Baojing

AU - Zhang, Fujun

AU - Tang, Weihua

PY - 2015/11/19

Y1 - 2015/11/19

N2 - A new strong electron-deficient acceptor unit, 4,9-bis(5-bromothiophen-2-yl)-6,7-bis(5-dodecylthiophen-2-yl)-[1,2,5]thiadiazolo[3,4-g]quinoxaline (TQxT), is designed. Three TQxT based new conjugated polymers have been further developed by alternating with benzo[1,2-b:4,5-b′]dithiophene or naphtho[1,2-b:5,6-b′]difuran. Featuring ultra low bandgaps of 1.03-1.10 eV, these polymers exhibit absorption spectra beyond near-infrared (NIR) region. The polymer:PC71BM (1:2) solar cells deliver a best power conversion efficiency (PCE) of 0.43%. The doping of 9 wt% PBDTT-TQxP into P3HT:PC71BM (1:2) blend, however, leads to a highest PCE of 3.58% for the resultant ternary solar cells, corresponding to ∼22% improvement in comparison to 2.93% PCE for P3HT:PC71BM binary cells.

AB - A new strong electron-deficient acceptor unit, 4,9-bis(5-bromothiophen-2-yl)-6,7-bis(5-dodecylthiophen-2-yl)-[1,2,5]thiadiazolo[3,4-g]quinoxaline (TQxT), is designed. Three TQxT based new conjugated polymers have been further developed by alternating with benzo[1,2-b:4,5-b′]dithiophene or naphtho[1,2-b:5,6-b′]difuran. Featuring ultra low bandgaps of 1.03-1.10 eV, these polymers exhibit absorption spectra beyond near-infrared (NIR) region. The polymer:PC71BM (1:2) solar cells deliver a best power conversion efficiency (PCE) of 0.43%. The doping of 9 wt% PBDTT-TQxP into P3HT:PC71BM (1:2) blend, however, leads to a highest PCE of 3.58% for the resultant ternary solar cells, corresponding to ∼22% improvement in comparison to 2.93% PCE for P3HT:PC71BM binary cells.

KW - Ternary polymer solar cells

KW - Thiadiazole quinoxaline-based copolymers

KW - Ultra low bandgaps

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DO - 10.1016/j.polymer.2015.09.047

M3 - Article

AN - SCOPUS:84944188884

SN - 0032-3861

VL - 79

SP - 12

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JO - Polymer

JF - Polymer

ER -

Thiadiazole quinoxaline-based copolymers with ∼1.0 eV bandgap for ternary polymer solar cells

Abstract

Keywords

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