All-Small-Molecule Organic Solar Cells Based on a Fluorinated Small Molecule Donor With High Open-Circuit Voltage of 1.07 V

A new small molecule donor with an acceptor-donor-acceptor (A-D-A) structure, namely DRTB-FT, has been designed and synthesized for all-small-molecule organic solar cells (ASM-OSCs). By introducing fluorine atoms on the thienyl substituent of the central benzodithiophene unit, DRTB-FT shows a low-ly...

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Autores principales: Liu, Chunyan, Qiu, Nailiang, Sun, Yanna, Ke, Xin, Zhang, Hongtao, Li, Chenxi, Wan, Xiangjian, Chen, Yongsheng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2020
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7198867/
https://www.ncbi.nlm.nih.gov/pubmed/32411669
http://dx.doi.org/10.3389/fchem.2020.00329
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author Liu, Chunyan
Qiu, Nailiang
Sun, Yanna
Ke, Xin
Zhang, Hongtao
Li, Chenxi
Wan, Xiangjian
Chen, Yongsheng
author_facet Liu, Chunyan
Qiu, Nailiang
Sun, Yanna
Ke, Xin
Zhang, Hongtao
Li, Chenxi
Wan, Xiangjian
Chen, Yongsheng
author_sort Liu, Chunyan
collection PubMed
description A new small molecule donor with an acceptor-donor-acceptor (A-D-A) structure, namely DRTB-FT, has been designed and synthesized for all-small-molecule organic solar cells (ASM-OSCs). By introducing fluorine atoms on the thienyl substituent of the central benzodithiophene unit, DRTB-FT shows a low-lying highest occupied molecular orbital (HOMO) energy level of −5.64 eV. Blending with an A-D-A type acceptor F-2Cl, DRTB-FT based ASM-OSCs gave a power conversion efficiency (PCE) of 7.66% with a high open-circuit voltage (V(oc)) of 1.070 V and a low energy loss of 0.47 eV. The results indicate that high V(oc) of ASM-OSC devices can be obtained through careful donor molecular optimization.
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spelling pubmed-71988672020-05-14 All-Small-Molecule Organic Solar Cells Based on a Fluorinated Small Molecule Donor With High Open-Circuit Voltage of 1.07 V Liu, Chunyan Qiu, Nailiang Sun, Yanna Ke, Xin Zhang, Hongtao Li, Chenxi Wan, Xiangjian Chen, Yongsheng Front Chem Chemistry A new small molecule donor with an acceptor-donor-acceptor (A-D-A) structure, namely DRTB-FT, has been designed and synthesized for all-small-molecule organic solar cells (ASM-OSCs). By introducing fluorine atoms on the thienyl substituent of the central benzodithiophene unit, DRTB-FT shows a low-lying highest occupied molecular orbital (HOMO) energy level of −5.64 eV. Blending with an A-D-A type acceptor F-2Cl, DRTB-FT based ASM-OSCs gave a power conversion efficiency (PCE) of 7.66% with a high open-circuit voltage (V(oc)) of 1.070 V and a low energy loss of 0.47 eV. The results indicate that high V(oc) of ASM-OSC devices can be obtained through careful donor molecular optimization. Frontiers Media S.A. 2020-04-28 /pmc/articles/PMC7198867/ /pubmed/32411669 http://dx.doi.org/10.3389/fchem.2020.00329 Text en Copyright © 2020 Liu, Qiu, Sun, Ke, Zhang, Li, Wan and Chen. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Chemistry
Liu, Chunyan
Qiu, Nailiang
Sun, Yanna
Ke, Xin
Zhang, Hongtao
Li, Chenxi
Wan, Xiangjian
Chen, Yongsheng
All-Small-Molecule Organic Solar Cells Based on a Fluorinated Small Molecule Donor With High Open-Circuit Voltage of 1.07 V
title All-Small-Molecule Organic Solar Cells Based on a Fluorinated Small Molecule Donor With High Open-Circuit Voltage of 1.07 V
title_full All-Small-Molecule Organic Solar Cells Based on a Fluorinated Small Molecule Donor With High Open-Circuit Voltage of 1.07 V
title_fullStr All-Small-Molecule Organic Solar Cells Based on a Fluorinated Small Molecule Donor With High Open-Circuit Voltage of 1.07 V
title_full_unstemmed All-Small-Molecule Organic Solar Cells Based on a Fluorinated Small Molecule Donor With High Open-Circuit Voltage of 1.07 V
title_short All-Small-Molecule Organic Solar Cells Based on a Fluorinated Small Molecule Donor With High Open-Circuit Voltage of 1.07 V
title_sort all-small-molecule organic solar cells based on a fluorinated small molecule donor with high open-circuit voltage of 1.07 v
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7198867/
https://www.ncbi.nlm.nih.gov/pubmed/32411669
http://dx.doi.org/10.3389/fchem.2020.00329
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