Synthesis and Photovoltaic Effect of Electron-Withdrawing Units for Low Band Gap Conjugated Polymers Bearing Bi(thienylenevinylene) Side Chains

Synthesis and Photovoltaic Effect of Electron-Withdrawing Units for Low Band Gap Conjugated Polymers Bearing Bi(thienylenevinylene) Side Chains

A novel (<i>E</i>)-5-(2-(5-alkylthiothiophen-2-yl)vinyl)thien-2-yl (TVT)-comprising benzo[1,2-b:4,5-b&#8217;]dithiophene (BDT) derivative (BDT-TVT) was designed and synthetized to compose two donor-acceptor (D-A) typed copolymers (PBDT-TVT-ID and PBDT-TVT-DTNT) with the electron-with...

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Main Authors: Jianfeng Li, Yufei Wang, Ningning Wang, Zezhou Liang, Xu Wang, Yichun Peng, Junfeng Tong, Chunyan Yang, Yangjun Xia
Format: Article
Language:English
Published: MDPI AG 2019-09-01
Series:Polymers
Subjects:
polymer solar cells
low band gap
bi(thienylenevinylene)
benzo[1,2-b:4,5-b’]dithiophene
photovoltaic property
Online Access:https://www.mdpi.com/2073-4360/11/9/1461
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spelling doaj-bceb6c0fc1d1488ebde74b4b0b8f66572020-11-24T22:14:24ZengMDPI AGPolymers2073-43602019-09-01119146110.3390/polym11091461polym11091461Synthesis and Photovoltaic Effect of Electron-Withdrawing Units for Low Band Gap Conjugated Polymers Bearing Bi(thienylenevinylene) Side ChainsJianfeng Li0Yufei Wang1Ningning Wang2Zezhou Liang3Xu Wang4Yichun Peng5Junfeng Tong6Chunyan Yang7Yangjun Xia8School of Materials and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, ChinaSchool of Materials and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, ChinaSchool of Materials and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, ChinaSchool of Materials and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, ChinaSchool of Materials and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, ChinaSchool of Civil Engineering, Lanzhou Institute of Technology, Lanzhou 730070, ChinaSchool of Materials and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, ChinaSchool of Materials and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, ChinaSchool of Materials and Engineering, Lanzhou Jiaotong University, Lanzhou 730070, ChinaA novel (<i>E</i>)-5-(2-(5-alkylthiothiophen-2-yl)vinyl)thien-2-yl (TVT)-comprising benzo[1,2-b:4,5-b&#8217;]dithiophene (BDT) derivative (BDT-TVT) was designed and synthetized to compose two donor-acceptor (D-A) typed copolymers (PBDT-TVT-ID and PBDT-TVT-DTNT) with the electron-withdrawing unit isoindigo (ID) and naphtho[1,2-c:5,6-c&#8242;]bis[1,2,5]thiadiazole (NT), respectively. PBDT-TVT-ID and PBDT-TVT-DTNT showed good thermal stability (360 &#176;C), an absorption spectrum from 300 nm to 760 nm and a relatively low lying energy level of Highest Occupied Molecular Orbital (<i>E</i><sub>HOMO</sub>) (&#8722;5.36 to &#8722;5.45 eV), which could obtain a large open-circuit voltage (<i>V</i><sub>oc</sub>) from photovoltaic devices with PBDT-TVT-ID or PBDT-TVT-DTNT. The photovoltaic devices with ITO/PFN/polymers: PC<sub>71</sub>BM/MoO<sub>3</sub>/Ag structure were assembled and exhibited a good photovoltaic performance with a power conversion efficiency (PCE) of 4.09% (PBDT-TVT-ID) and 5.44% (PBDT-TVT-DTNT), respectively. The best PCE of a PBDT-TVT-DTNT/PC<sub>71</sub>BM-based device mainly originated from its wider absorption, higher hole mobility and favorable photoactive layer morphology.https://www.mdpi.com/2073-4360/11/9/1461polymer solar cellslow band gapbi(thienylenevinylene)benzo[1,2-b:4,5-b’]dithiophenephotovoltaic property
collection DOAJ
language English
format Article
sources DOAJ
author Jianfeng Li
Yufei Wang
Ningning Wang
Zezhou Liang
Xu Wang
Yichun Peng
Junfeng Tong
Chunyan Yang
Yangjun Xia
spellingShingle Jianfeng Li
Yufei Wang
Ningning Wang
Zezhou Liang
Xu Wang
Yichun Peng
Junfeng Tong
Chunyan Yang
Yangjun Xia
Synthesis and Photovoltaic Effect of Electron-Withdrawing Units for Low Band Gap Conjugated Polymers Bearing Bi(thienylenevinylene) Side Chains
Polymers
polymer solar cells
low band gap
bi(thienylenevinylene)
benzo[1,2-b:4,5-b’]dithiophene
photovoltaic property
author_facet Jianfeng Li
Yufei Wang
Ningning Wang
Zezhou Liang
Xu Wang
Yichun Peng
Junfeng Tong
Chunyan Yang
Yangjun Xia
author_sort Jianfeng Li
title Synthesis and Photovoltaic Effect of Electron-Withdrawing Units for Low Band Gap Conjugated Polymers Bearing Bi(thienylenevinylene) Side Chains
title_short Synthesis and Photovoltaic Effect of Electron-Withdrawing Units for Low Band Gap Conjugated Polymers Bearing Bi(thienylenevinylene) Side Chains
title_full Synthesis and Photovoltaic Effect of Electron-Withdrawing Units for Low Band Gap Conjugated Polymers Bearing Bi(thienylenevinylene) Side Chains
title_fullStr Synthesis and Photovoltaic Effect of Electron-Withdrawing Units for Low Band Gap Conjugated Polymers Bearing Bi(thienylenevinylene) Side Chains
title_full_unstemmed Synthesis and Photovoltaic Effect of Electron-Withdrawing Units for Low Band Gap Conjugated Polymers Bearing Bi(thienylenevinylene) Side Chains
title_sort synthesis and photovoltaic effect of electron-withdrawing units for low band gap conjugated polymers bearing bi(thienylenevinylene) side chains
publisher MDPI AG
series Polymers
issn 2073-4360
publishDate 2019-09-01
description A novel (<i>E</i>)-5-(2-(5-alkylthiothiophen-2-yl)vinyl)thien-2-yl (TVT)-comprising benzo[1,2-b:4,5-b&#8217;]dithiophene (BDT) derivative (BDT-TVT) was designed and synthetized to compose two donor-acceptor (D-A) typed copolymers (PBDT-TVT-ID and PBDT-TVT-DTNT) with the electron-withdrawing unit isoindigo (ID) and naphtho[1,2-c:5,6-c&#8242;]bis[1,2,5]thiadiazole (NT), respectively. PBDT-TVT-ID and PBDT-TVT-DTNT showed good thermal stability (360 &#176;C), an absorption spectrum from 300 nm to 760 nm and a relatively low lying energy level of Highest Occupied Molecular Orbital (<i>E</i><sub>HOMO</sub>) (&#8722;5.36 to &#8722;5.45 eV), which could obtain a large open-circuit voltage (<i>V</i><sub>oc</sub>) from photovoltaic devices with PBDT-TVT-ID or PBDT-TVT-DTNT. The photovoltaic devices with ITO/PFN/polymers: PC<sub>71</sub>BM/MoO<sub>3</sub>/Ag structure were assembled and exhibited a good photovoltaic performance with a power conversion efficiency (PCE) of 4.09% (PBDT-TVT-ID) and 5.44% (PBDT-TVT-DTNT), respectively. The best PCE of a PBDT-TVT-DTNT/PC<sub>71</sub>BM-based device mainly originated from its wider absorption, higher hole mobility and favorable photoactive layer morphology.
topic polymer solar cells
low band gap
bi(thienylenevinylene)
benzo[1,2-b:4,5-b’]dithiophene
photovoltaic property
url https://www.mdpi.com/2073-4360/11/9/1461
work_keys_str_mv AT jianfengli synthesisandphotovoltaiceffectofelectronwithdrawingunitsforlowbandgapconjugatedpolymersbearingbithienylenevinylenesidechains
AT yufeiwang synthesisandphotovoltaiceffectofelectronwithdrawingunitsforlowbandgapconjugatedpolymersbearingbithienylenevinylenesidechains
AT ningningwang synthesisandphotovoltaiceffectofelectronwithdrawingunitsforlowbandgapconjugatedpolymersbearingbithienylenevinylenesidechains
AT zezhouliang synthesisandphotovoltaiceffectofelectronwithdrawingunitsforlowbandgapconjugatedpolymersbearingbithienylenevinylenesidechains
AT xuwang synthesisandphotovoltaiceffectofelectronwithdrawingunitsforlowbandgapconjugatedpolymersbearingbithienylenevinylenesidechains
AT yichunpeng synthesisandphotovoltaiceffectofelectronwithdrawingunitsforlowbandgapconjugatedpolymersbearingbithienylenevinylenesidechains
AT junfengtong synthesisandphotovoltaiceffectofelectronwithdrawingunitsforlowbandgapconjugatedpolymersbearingbithienylenevinylenesidechains
AT chunyanyang synthesisandphotovoltaiceffectofelectronwithdrawingunitsforlowbandgapconjugatedpolymersbearingbithienylenevinylenesidechains
AT yangjunxia synthesisandphotovoltaiceffectofelectronwithdrawingunitsforlowbandgapconjugatedpolymersbearingbithienylenevinylenesidechains
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