Abstract
| Original language | English |
|---|---|
| Journal | Journal of Materials Chemistry C |
| Volume | 4 |
| Issue number | 20 |
| Pages (from-to) | 4393-4401 |
| Number of pages | 9 |
| ISSN | 2050-7526 |
| DOIs | |
| Publication status | Published - 2016 |
Cite this
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Novel high band gap pendant-borylated carbazole polymers with deep HOMO levels through direct +N=B- interaction for organic photovoltaics. / Brandt, Rasmus G.; Sveegaard, Steffen G.; Xiao, Manjun; Yue, Wei; Du, Zhengkun; Qiu, Meng; Angmo, Dechan; Andersen, Thomas Rieks; Krebs, Frederik C; Yang, Renqiang; Yu, Donghong.
In: Journal of Materials Chemistry C, Vol. 4, No. 20, 2016, p. 4393-4401.Research output: Contribution to journal › Journal article › Research › peer-review
TY - JOUR
T1 - Novel high band gap pendant-borylated carbazole polymers with deep HOMO levels through direct +N=B- interaction for organic photovoltaics
AU - Brandt, Rasmus G.
AU - Sveegaard, Steffen G.
AU - Xiao, Manjun
AU - Yue, Wei
AU - Du, Zhengkun
AU - Qiu, Meng
AU - Angmo, Dechan
AU - Andersen, Thomas Rieks
AU - Krebs, Frederik C
AU - Yang, Renqiang
AU - Yu, Donghong
PY - 2016
Y1 - 2016
N2 - In this communication, we investigate the direct and still conjugated intramolecular +N=B- interactions in novel high band gap borylated carbazole containing polymers, namely, poly(3,6-(N-di(2,4,6-trimethyl)-phenylboryl-carbazole)-alt- 4,8-di(5-(2-ethylhexyl)thiophene-2-yl)benzo[1,2-b: 4,5-b'] dithiophene) (P(3,6-BCBDT)) and poly(3,6-(N-di(2,4,6-trimethyl)phenylboryl-carbazole)-alt-3,3 '''- didodecyl-2,2': 5',2 '': 5 '',2 '''-quaterthiophene) (P(3,6-BCQT)), which result in ambipolarity, high electron affinity, and deep HOMO levels. The quasi-donor-acceptor nature of the two polymers was confirmed by UV-Vis absorption, electro-chemical property studies, and computer modelling. Band gaps of 2.07 eV for P(3,6-BCBDT) and 2.23 eV for P(3,6-BCQT) were obtained. P(3,6-BCQT) afforded a power conversion efficiency of 1.44%, with a Jsc of 4.82 mA cm-2, a Voc of 0.79 V and a FF of 37%, and P(3,6-BCBDT) performed better with an efficiency of 3.82%, with a Jsc of 8.31 mA cm-2, a V-oc of 1.0 V based on its low lying HOMO level, and a FF of 45%.
AB - In this communication, we investigate the direct and still conjugated intramolecular +N=B- interactions in novel high band gap borylated carbazole containing polymers, namely, poly(3,6-(N-di(2,4,6-trimethyl)-phenylboryl-carbazole)-alt- 4,8-di(5-(2-ethylhexyl)thiophene-2-yl)benzo[1,2-b: 4,5-b'] dithiophene) (P(3,6-BCBDT)) and poly(3,6-(N-di(2,4,6-trimethyl)phenylboryl-carbazole)-alt-3,3 '''- didodecyl-2,2': 5',2 '': 5 '',2 '''-quaterthiophene) (P(3,6-BCQT)), which result in ambipolarity, high electron affinity, and deep HOMO levels. The quasi-donor-acceptor nature of the two polymers was confirmed by UV-Vis absorption, electro-chemical property studies, and computer modelling. Band gaps of 2.07 eV for P(3,6-BCBDT) and 2.23 eV for P(3,6-BCQT) were obtained. P(3,6-BCQT) afforded a power conversion efficiency of 1.44%, with a Jsc of 4.82 mA cm-2, a Voc of 0.79 V and a FF of 37%, and P(3,6-BCBDT) performed better with an efficiency of 3.82%, with a Jsc of 8.31 mA cm-2, a V-oc of 1.0 V based on its low lying HOMO level, and a FF of 45%.
U2 - 10.1039/c6tc01208f
DO - 10.1039/c6tc01208f
M3 - Journal article
VL - 4
SP - 4393
EP - 4401
JO - Journal of Materials Chemistry C
JF - Journal of Materials Chemistry C
SN - 2050-7526
IS - 20
ER -