A new organic small molecule, DRTB-T, that incorporates a two-dimensional trialkylthienyl-substituted benzodithiophene core building block was designed and synthesized. DRTB-T has a band gap (Egopt) of 2.0 eV with a low-lying highest occupied molecular orbital (HOMO) level of −5.51 eV. Nonfullerene small-molecule solar cells consisting of DRTB-T and a nonfullerene acceptor (IC-C6IDT-IC) were constructed, and the morphology of the active layer was fine-tuned by solvent vapor annealing (SVA). The device showed a record 9.08\% power conversion efficiency (PCE) with a high open-circuit voltage (Voc = 0.98 V). This is the highest PCE for a nonfullerene small-molecule organic solar cell (NFSM-OSC) reported to date. Our notable results demonstrate that the molecular design of a wide band gap (WBG) donor to create a well-matched donor–acceptor pair with a low band gap (LBG) nonfullerene small-molecule acceptor, as well as subtle morphological control, provides great potential to realize high-performance NFSM-OSCs.
Description
New Wide Band Gap Donor for Efficient Fullerene-Free All-Small-Molecule Organic Solar Cells - Journal of the American Chemical Society (ACS Publications)
%0 Journal Article
%1 doi:10.1021/jacs.6b11612
%A Yang, Liyan
%A Zhang, Shaoqing
%A He, Chang
%A Zhang, Jianqi
%A Yao, Huifeng
%A Yang, Yang
%A Zhang, Yun
%A Zhao, Wenchao
%A Hou, Jianhui
%D 2017
%J Journal of the American Chemical Society
%K small-molecule solar-cell
%N 5
%P 1958-1966
%R 10.1021/jacs.6b11612
%T New Wide Band Gap Donor for Efficient Fullerene-Free All-Small-Molecule Organic Solar Cells
%U http://dx.doi.org/10.1021/jacs.6b11612
%V 139
%X A new organic small molecule, DRTB-T, that incorporates a two-dimensional trialkylthienyl-substituted benzodithiophene core building block was designed and synthesized. DRTB-T has a band gap (Egopt) of 2.0 eV with a low-lying highest occupied molecular orbital (HOMO) level of −5.51 eV. Nonfullerene small-molecule solar cells consisting of DRTB-T and a nonfullerene acceptor (IC-C6IDT-IC) were constructed, and the morphology of the active layer was fine-tuned by solvent vapor annealing (SVA). The device showed a record 9.08\% power conversion efficiency (PCE) with a high open-circuit voltage (Voc = 0.98 V). This is the highest PCE for a nonfullerene small-molecule organic solar cell (NFSM-OSC) reported to date. Our notable results demonstrate that the molecular design of a wide band gap (WBG) donor to create a well-matched donor–acceptor pair with a low band gap (LBG) nonfullerene small-molecule acceptor, as well as subtle morphological control, provides great potential to realize high-performance NFSM-OSCs.
@article{doi:10.1021/jacs.6b11612,
abstract = { A new organic small molecule, DRTB-T, that incorporates a two-dimensional trialkylthienyl-substituted benzodithiophene core building block was designed and synthesized. DRTB-T has a band gap (Egopt) of 2.0 eV with a low-lying highest occupied molecular orbital (HOMO) level of −5.51 eV. Nonfullerene small-molecule solar cells consisting of DRTB-T and a nonfullerene acceptor (IC-C6IDT-IC) were constructed, and the morphology of the active layer was fine-tuned by solvent vapor annealing (SVA). The device showed a record 9.08\% power conversion efficiency (PCE) with a high open-circuit voltage (Voc = 0.98 V). This is the highest PCE for a nonfullerene small-molecule organic solar cell (NFSM-OSC) reported to date. Our notable results demonstrate that the molecular design of a wide band gap (WBG) donor to create a well-matched donor–acceptor pair with a low band gap (LBG) nonfullerene small-molecule acceptor, as well as subtle morphological control, provides great potential to realize high-performance NFSM-OSCs. },
added-at = {2017-02-23T09:28:24.000+0100},
author = {Yang, Liyan and Zhang, Shaoqing and He, Chang and Zhang, Jianqi and Yao, Huifeng and Yang, Yang and Zhang, Yun and Zhao, Wenchao and Hou, Jianhui},
biburl = {https://www.bibsonomy.org/bibtex/200850546a66eeea03aaa32a49b72b979/baumbach},
description = {New Wide Band Gap Donor for Efficient Fullerene-Free All-Small-Molecule Organic Solar Cells - Journal of the American Chemical Society (ACS Publications)},
doi = {10.1021/jacs.6b11612},
eprint = {http://dx.doi.org/10.1021/jacs.6b11612},
interhash = {c730b413b6e3d2d478512721943a9b6f},
intrahash = {00850546a66eeea03aaa32a49b72b979},
journal = {Journal of the American Chemical Society},
keywords = {small-molecule solar-cell},
note = {PMID: 28081597},
number = 5,
pages = {1958-1966},
timestamp = {2017-02-23T09:28:24.000+0100},
title = {New Wide Band Gap Donor for Efficient Fullerene-Free All-Small-Molecule Organic Solar Cells},
url = {http://dx.doi.org/10.1021/jacs.6b11612},
volume = 139,
year = 2017
}