Balancing High Open Circuit Voltage over 1.0 V and High Short Circuit Current in Benzodithiophene-Based Polymer Solar Cells with Low Energy Loss: A Synergistic Effect of Fluorination and Alkylthiolation

Zhengkun Du, Xichang Bao, Yonghai Li, Deyu Liu, Jiuxing Wang, Chunming Yang, Reinhard Wimmer, Lars Wagner Städe, Renqiang Yang, Donghong Yu

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18 Citationer (Scopus)

Resumé

Based on the most recently significant progress within the last one year in organic photovoltaic research from either alkylthiolation or fluorination on benzo[1,2-b: 4,5-b'] dithiophene moiety for high efficiency polymer solar cells (PSCs), two novel simultaneously fluorinated and alkylthiolated benzo[1,2-b: 4,5-b'] dithiophene (BDT)-based donor-acceptor (D-A) polymers, poly(4,8-bis(5'-((2''-ethylhexyl) thio)-4'-fluorothiophen-2'-yl) benzo[1,2-b: 4,5-b'] dithiophene-2,6-diyl)-alt-2'-ethylhexyl-3-fluorothieno[3,4-b] thiophene-2-carboxylate (PBDTT-SF-TT) and poly(4,8-bis(5'-((2''-ethylhexyl) thio)-4'-fluorothiophen-2'-yl) benzo[1,2-b: 4,5-b'] dithiophene-2,6-diyl)-alt-1,3bis( thiophen-2-yl)-5,7-bis(2-ethylhexyl) benzo[1,2-c: 4,5-c'] dithiophene-4,8-dione (PBDTT-SF-BDD), namely, via an advantageous and synthetically economic route for the key monomer are reported herein. Synergistic effects of fluorination and alkylthiolation on BDT moieties are discussed in detail, which is based on the superior balance between high V-oc and large J(sc) when PBDTTSF- TT/PC71BM and PBDTT-SF-BDD/ PC71BM solar cells present their high V-oc as 1.00 and 0.97 V (associated with their deep highest occupied molecular orbital level of -5.54 and -5.61 eV), a moderately high J(sc) of 14.79 and 14.70 mA cm(-2), and thus result a high power conversion efficiency of 9.07% and 9.72%, respectively. Meanwhile, for PBDTT-SF-TT, a very low energy loss of 0.59 eV is pronounced, leading to the promisingly high voltage, and furthermore performance study and morphological results declare an additive-free PSC from PBDTT-SF-TT, which is beneficial to practical applications.
OriginalsprogEngelsk
Artikelnummer 1701471
TidsskriftAdvanced Energy Materials
Vol/bind8
Udgave nummer8
Antal sider12
ISSN1614-6832
DOI
StatusUdgivet - 15 mar. 2018

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Fluorination
Open circuit voltage
Short circuit currents
Energy dissipation
Molecular orbitals
Conversion efficiency
Solar cells
Polymers
Monomers
Economics
Electric potential
Polymer solar cells
7,7'-dimethoxy-(4,4'-bi-1,3-benzodioxole)-5,5'-dicarboxylic acid dimethyl ester
N-((2,3-dihydro-1,4-benzodioxin-2-yl)methyl)-5-methoxy-1H-indole-3-ethanamine
thiophene-2-carboxylate

Citer dette

@article{80a8004041d647f184344a1c511cc7b3,
title = "Balancing High Open Circuit Voltage over 1.0 V and High Short Circuit Current in Benzodithiophene-Based Polymer Solar Cells with Low Energy Loss: A Synergistic Effect of Fluorination and Alkylthiolation",
abstract = "Based on the most recently significant progress within the last one year in organic photovoltaic research from either alkylthiolation or fluorination on benzo[1,2-b: 4,5-b'] dithiophene moiety for high efficiency polymer solar cells (PSCs), two novel simultaneously fluorinated and alkylthiolated benzo[1,2-b: 4,5-b'] dithiophene (BDT)-based donor-acceptor (D-A) polymers, poly(4,8-bis(5'-((2''-ethylhexyl) thio)-4'-fluorothiophen-2'-yl) benzo[1,2-b: 4,5-b'] dithiophene-2,6-diyl)-alt-2'-ethylhexyl-3-fluorothieno[3,4-b] thiophene-2-carboxylate (PBDTT-SF-TT) and poly(4,8-bis(5'-((2''-ethylhexyl) thio)-4'-fluorothiophen-2'-yl) benzo[1,2-b: 4,5-b'] dithiophene-2,6-diyl)-alt-1,3bis( thiophen-2-yl)-5,7-bis(2-ethylhexyl) benzo[1,2-c: 4,5-c'] dithiophene-4,8-dione (PBDTT-SF-BDD), namely, via an advantageous and synthetically economic route for the key monomer are reported herein. Synergistic effects of fluorination and alkylthiolation on BDT moieties are discussed in detail, which is based on the superior balance between high V-oc and large J(sc) when PBDTTSF- TT/PC71BM and PBDTT-SF-BDD/ PC71BM solar cells present their high V-oc as 1.00 and 0.97 V (associated with their deep highest occupied molecular orbital level of -5.54 and -5.61 eV), a moderately high J(sc) of 14.79 and 14.70 mA cm(-2), and thus result a high power conversion efficiency of 9.07{\%} and 9.72{\%}, respectively. Meanwhile, for PBDTT-SF-TT, a very low energy loss of 0.59 eV is pronounced, leading to the promisingly high voltage, and furthermore performance study and morphological results declare an additive-free PSC from PBDTT-SF-TT, which is beneficial to practical applications.",
keywords = "alkylthiolation; benzo[1,2-b:4,5-b']dithiophene; fluorination; polymer solar cells; synergistic effect",
author = "Zhengkun Du and Xichang Bao and Yonghai Li and Deyu Liu and Jiuxing Wang and Chunming Yang and Reinhard Wimmer and St{\"a}de, {Lars Wagner} and Renqiang Yang and Donghong Yu",
year = "2018",
month = "3",
day = "15",
doi = "10.1002/aenm.201701471",
language = "English",
volume = "8",
journal = "Advanced Energy Materials",
issn = "1614-6832",
publisher = "Wiley",
number = "8",

}

Balancing High Open Circuit Voltage over 1.0 V and High Short Circuit Current in Benzodithiophene-Based Polymer Solar Cells with Low Energy Loss: A Synergistic Effect of Fluorination and Alkylthiolation. / Du, Zhengkun; Bao, Xichang; Li, Yonghai; Liu, Deyu; Wang, Jiuxing; Yang, Chunming; Wimmer, Reinhard; Städe, Lars Wagner; Yang, Renqiang; Yu, Donghong.

I: Advanced Energy Materials, Bind 8, Nr. 8, 1701471 , 15.03.2018.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Balancing High Open Circuit Voltage over 1.0 V and High Short Circuit Current in Benzodithiophene-Based Polymer Solar Cells with Low Energy Loss: A Synergistic Effect of Fluorination and Alkylthiolation

AU - Du, Zhengkun

AU - Bao, Xichang

AU - Li, Yonghai

AU - Liu, Deyu

AU - Wang, Jiuxing

AU - Yang, Chunming

AU - Wimmer, Reinhard

AU - Städe, Lars Wagner

AU - Yang, Renqiang

AU - Yu, Donghong

PY - 2018/3/15

Y1 - 2018/3/15

N2 - Based on the most recently significant progress within the last one year in organic photovoltaic research from either alkylthiolation or fluorination on benzo[1,2-b: 4,5-b'] dithiophene moiety for high efficiency polymer solar cells (PSCs), two novel simultaneously fluorinated and alkylthiolated benzo[1,2-b: 4,5-b'] dithiophene (BDT)-based donor-acceptor (D-A) polymers, poly(4,8-bis(5'-((2''-ethylhexyl) thio)-4'-fluorothiophen-2'-yl) benzo[1,2-b: 4,5-b'] dithiophene-2,6-diyl)-alt-2'-ethylhexyl-3-fluorothieno[3,4-b] thiophene-2-carboxylate (PBDTT-SF-TT) and poly(4,8-bis(5'-((2''-ethylhexyl) thio)-4'-fluorothiophen-2'-yl) benzo[1,2-b: 4,5-b'] dithiophene-2,6-diyl)-alt-1,3bis( thiophen-2-yl)-5,7-bis(2-ethylhexyl) benzo[1,2-c: 4,5-c'] dithiophene-4,8-dione (PBDTT-SF-BDD), namely, via an advantageous and synthetically economic route for the key monomer are reported herein. Synergistic effects of fluorination and alkylthiolation on BDT moieties are discussed in detail, which is based on the superior balance between high V-oc and large J(sc) when PBDTTSF- TT/PC71BM and PBDTT-SF-BDD/ PC71BM solar cells present their high V-oc as 1.00 and 0.97 V (associated with their deep highest occupied molecular orbital level of -5.54 and -5.61 eV), a moderately high J(sc) of 14.79 and 14.70 mA cm(-2), and thus result a high power conversion efficiency of 9.07% and 9.72%, respectively. Meanwhile, for PBDTT-SF-TT, a very low energy loss of 0.59 eV is pronounced, leading to the promisingly high voltage, and furthermore performance study and morphological results declare an additive-free PSC from PBDTT-SF-TT, which is beneficial to practical applications.

AB - Based on the most recently significant progress within the last one year in organic photovoltaic research from either alkylthiolation or fluorination on benzo[1,2-b: 4,5-b'] dithiophene moiety for high efficiency polymer solar cells (PSCs), two novel simultaneously fluorinated and alkylthiolated benzo[1,2-b: 4,5-b'] dithiophene (BDT)-based donor-acceptor (D-A) polymers, poly(4,8-bis(5'-((2''-ethylhexyl) thio)-4'-fluorothiophen-2'-yl) benzo[1,2-b: 4,5-b'] dithiophene-2,6-diyl)-alt-2'-ethylhexyl-3-fluorothieno[3,4-b] thiophene-2-carboxylate (PBDTT-SF-TT) and poly(4,8-bis(5'-((2''-ethylhexyl) thio)-4'-fluorothiophen-2'-yl) benzo[1,2-b: 4,5-b'] dithiophene-2,6-diyl)-alt-1,3bis( thiophen-2-yl)-5,7-bis(2-ethylhexyl) benzo[1,2-c: 4,5-c'] dithiophene-4,8-dione (PBDTT-SF-BDD), namely, via an advantageous and synthetically economic route for the key monomer are reported herein. Synergistic effects of fluorination and alkylthiolation on BDT moieties are discussed in detail, which is based on the superior balance between high V-oc and large J(sc) when PBDTTSF- TT/PC71BM and PBDTT-SF-BDD/ PC71BM solar cells present their high V-oc as 1.00 and 0.97 V (associated with their deep highest occupied molecular orbital level of -5.54 and -5.61 eV), a moderately high J(sc) of 14.79 and 14.70 mA cm(-2), and thus result a high power conversion efficiency of 9.07% and 9.72%, respectively. Meanwhile, for PBDTT-SF-TT, a very low energy loss of 0.59 eV is pronounced, leading to the promisingly high voltage, and furthermore performance study and morphological results declare an additive-free PSC from PBDTT-SF-TT, which is beneficial to practical applications.

KW - alkylthiolation; benzo[1,2-b:4,5-b']dithiophene; fluorination; polymer solar cells; synergistic effect

UR - https://onlinelibrary.wiley.com/doi/epdf/10.1002/aenm.201701471

U2 - 10.1002/aenm.201701471

DO - 10.1002/aenm.201701471

M3 - Journal article

VL - 8

JO - Advanced Energy Materials

JF - Advanced Energy Materials

SN - 1614-6832

IS - 8

M1 - 1701471

ER -