Rational design of a novel isoindigo-based conjugated terpolymer with panchromatic absorption and its application to polymer solar cells

Na Yeon Kwon; Hyunchul Kang; Su Hong Park; Hyung Jong Kim; Chae Yeong Kim; Sungnam Park; Min Ju Cho; Dong Hoon Choi

doi:10.1016/j.dyepig.2020.108391

Rational design of a novel isoindigo-based conjugated terpolymer with panchromatic absorption and its application to polymer solar cells

Na Yeon Kwon, Hyunchul Kang, Su Hong Park, Hyung Jong Kim, Chae Yeong Kim, Sungnam Park, Min Ju Cho, Dong Hoon Choi

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

In this study, a panchromatic absorptive conjugated terpolymer, BDTID-BDT3MT, is synthesized, which consists of electron-donating benzodithiophene (BDT), isoindigo (ID) as a strong electron-accepting unit, and methyl-3-thiophenecarboxylate (3 MT) as a weak electron-accepting unit. By combining these three monomers into the structure of a conjugated terpolymer, the absorption spectrum of BDTID-BDT3MT is induced to exhibit an unusually broad, strong, and uniform band in the wavelength interval from 300 to 750 nm, which helps achieving highly efficient light harvesting under solar illumination. The intriguing panchromatic absorption behavior of BDTID-BDT3MT was explained on the basis of theoretical calculations using simplified repeating units. Polymer solar cells (PSCs) based on BDTID-BDT3MT as a donating polymer and non-fullerene acceptors (e.g., ITIC-4F) exhibited a high power conversion efficiency (PCE) of 5.38%, high open circuit voltage (V_oc) of 0.88 V, and short circuit current density (J_sc) of 13.74 mA/cm², while PSCs based on ternary blend systems consisting of BDTID, BDT3MT, and ITIC-4F exhibited lower PCE and J_sc of 3.74% and 11.15 mA/cm², respectively. The superior performance of PSCs based on BDTID-BDT3MT can be attributed to their high light harvesting efficiencies and relatively more favorable nano-phase film morphologies. Our results establish that BDT, ID, and 3 MT units serve as useful building blocks in the structure of conjugated terpolymers due to their remarkably broad panchromatic absorption band.

Original language	English
Article number	108391
Journal	Dyes and Pigments
Volume	179
DOIs	https://doi.org/10.1016/j.dyepig.2020.108391
Publication status	Published - 2020 Aug

Keywords

Benzodithiophene
Isoindigo
Panchromatic absorption
Polymer solar cell
Terpolymer

ASJC Scopus subject areas

Chemical Engineering(all)
Process Chemistry and Technology

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10.1016/j.dyepig.2020.108391

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Rational design of a novel isoindigo-based conjugated terpolymer with panchromatic absorption and its application to polymer solar cells. / Kwon, Na Yeon; Kang, Hyunchul; Park, Su Hong; Kim, Hyung Jong; Kim, Chae Yeong; Park, Sungnam; Cho, Min Ju; Choi, Dong Hoon.

In: Dyes and Pigments, Vol. 179, 108391, 08.2020.

Research output: Contribution to journal › Article › peer-review

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title = "Rational design of a novel isoindigo-based conjugated terpolymer with panchromatic absorption and its application to polymer solar cells",

abstract = "In this study, a panchromatic absorptive conjugated terpolymer, BDTID-BDT3MT, is synthesized, which consists of electron-donating benzodithiophene (BDT), isoindigo (ID) as a strong electron-accepting unit, and methyl-3-thiophenecarboxylate (3 MT) as a weak electron-accepting unit. By combining these three monomers into the structure of a conjugated terpolymer, the absorption spectrum of BDTID-BDT3MT is induced to exhibit an unusually broad, strong, and uniform band in the wavelength interval from 300 to 750 nm, which helps achieving highly efficient light harvesting under solar illumination. The intriguing panchromatic absorption behavior of BDTID-BDT3MT was explained on the basis of theoretical calculations using simplified repeating units. Polymer solar cells (PSCs) based on BDTID-BDT3MT as a donating polymer and non-fullerene acceptors (e.g., ITIC-4F) exhibited a high power conversion efficiency (PCE) of 5.38%, high open circuit voltage (Voc) of 0.88 V, and short circuit current density (Jsc) of 13.74 mA/cm2, while PSCs based on ternary blend systems consisting of BDTID, BDT3MT, and ITIC-4F exhibited lower PCE and Jsc of 3.74% and 11.15 mA/cm2, respectively. The superior performance of PSCs based on BDTID-BDT3MT can be attributed to their high light harvesting efficiencies and relatively more favorable nano-phase film morphologies. Our results establish that BDT, ID, and 3 MT units serve as useful building blocks in the structure of conjugated terpolymers due to their remarkably broad panchromatic absorption band.",

keywords = "Benzodithiophene, Isoindigo, Panchromatic absorption, Polymer solar cell, Terpolymer",

author = "Kwon, {Na Yeon} and Hyunchul Kang and Park, {Su Hong} and Kim, {Hyung Jong} and Kim, {Chae Yeong} and Sungnam Park and Cho, {Min Ju} and Choi, {Dong Hoon}",

note = "Funding Information: The authors acknowledge the financial support from the National Research Foundation of Korea (NRF-2018R1D1A1B07042533, 2019R1A2C2002647, and 2019R1A6A1A11044070). We are grateful to the Pohang Accelerator Laboratory (Pohang, Korea) for allowing us to conduct the grazing incidence X-ray diffraction measurements (GIWAXD). Funding Information: The authors acknowledge the financial support from the National Research Foundation of Korea ( NRF-2018R1D1A1B07042533 , 2019R1A2C2002647 , and 2019R1A6A1A11044070 ). We are grateful to the Pohang Accelerator Laboratory (Pohang, Korea) for allowing us to conduct the grazing incidence X-ray diffraction measurements (GIWAXD). Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2020",

month = aug,

doi = "10.1016/j.dyepig.2020.108391",

language = "English",

volume = "179",

journal = "Dyes and Pigments",

issn = "0143-7208",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Rational design of a novel isoindigo-based conjugated terpolymer with panchromatic absorption and its application to polymer solar cells

AU - Kwon, Na Yeon

AU - Kang, Hyunchul

AU - Park, Su Hong

AU - Kim, Hyung Jong

AU - Kim, Chae Yeong

AU - Park, Sungnam

AU - Cho, Min Ju

AU - Choi, Dong Hoon

N1 - Funding Information: The authors acknowledge the financial support from the National Research Foundation of Korea (NRF-2018R1D1A1B07042533, 2019R1A2C2002647, and 2019R1A6A1A11044070). We are grateful to the Pohang Accelerator Laboratory (Pohang, Korea) for allowing us to conduct the grazing incidence X-ray diffraction measurements (GIWAXD). Funding Information: The authors acknowledge the financial support from the National Research Foundation of Korea ( NRF-2018R1D1A1B07042533 , 2019R1A2C2002647 , and 2019R1A6A1A11044070 ). We are grateful to the Pohang Accelerator Laboratory (Pohang, Korea) for allowing us to conduct the grazing incidence X-ray diffraction measurements (GIWAXD). Publisher Copyright: © 2020 Elsevier Ltd

PY - 2020/8

Y1 - 2020/8

N2 - In this study, a panchromatic absorptive conjugated terpolymer, BDTID-BDT3MT, is synthesized, which consists of electron-donating benzodithiophene (BDT), isoindigo (ID) as a strong electron-accepting unit, and methyl-3-thiophenecarboxylate (3 MT) as a weak electron-accepting unit. By combining these three monomers into the structure of a conjugated terpolymer, the absorption spectrum of BDTID-BDT3MT is induced to exhibit an unusually broad, strong, and uniform band in the wavelength interval from 300 to 750 nm, which helps achieving highly efficient light harvesting under solar illumination. The intriguing panchromatic absorption behavior of BDTID-BDT3MT was explained on the basis of theoretical calculations using simplified repeating units. Polymer solar cells (PSCs) based on BDTID-BDT3MT as a donating polymer and non-fullerene acceptors (e.g., ITIC-4F) exhibited a high power conversion efficiency (PCE) of 5.38%, high open circuit voltage (Voc) of 0.88 V, and short circuit current density (Jsc) of 13.74 mA/cm2, while PSCs based on ternary blend systems consisting of BDTID, BDT3MT, and ITIC-4F exhibited lower PCE and Jsc of 3.74% and 11.15 mA/cm2, respectively. The superior performance of PSCs based on BDTID-BDT3MT can be attributed to their high light harvesting efficiencies and relatively more favorable nano-phase film morphologies. Our results establish that BDT, ID, and 3 MT units serve as useful building blocks in the structure of conjugated terpolymers due to their remarkably broad panchromatic absorption band.

AB - In this study, a panchromatic absorptive conjugated terpolymer, BDTID-BDT3MT, is synthesized, which consists of electron-donating benzodithiophene (BDT), isoindigo (ID) as a strong electron-accepting unit, and methyl-3-thiophenecarboxylate (3 MT) as a weak electron-accepting unit. By combining these three monomers into the structure of a conjugated terpolymer, the absorption spectrum of BDTID-BDT3MT is induced to exhibit an unusually broad, strong, and uniform band in the wavelength interval from 300 to 750 nm, which helps achieving highly efficient light harvesting under solar illumination. The intriguing panchromatic absorption behavior of BDTID-BDT3MT was explained on the basis of theoretical calculations using simplified repeating units. Polymer solar cells (PSCs) based on BDTID-BDT3MT as a donating polymer and non-fullerene acceptors (e.g., ITIC-4F) exhibited a high power conversion efficiency (PCE) of 5.38%, high open circuit voltage (Voc) of 0.88 V, and short circuit current density (Jsc) of 13.74 mA/cm2, while PSCs based on ternary blend systems consisting of BDTID, BDT3MT, and ITIC-4F exhibited lower PCE and Jsc of 3.74% and 11.15 mA/cm2, respectively. The superior performance of PSCs based on BDTID-BDT3MT can be attributed to their high light harvesting efficiencies and relatively more favorable nano-phase film morphologies. Our results establish that BDT, ID, and 3 MT units serve as useful building blocks in the structure of conjugated terpolymers due to their remarkably broad panchromatic absorption band.

KW - Benzodithiophene

KW - Isoindigo

KW - Panchromatic absorption

KW - Polymer solar cell

KW - Terpolymer

UR - http://www.scopus.com/inward/record.url?scp=85082693795&partnerID=8YFLogxK

U2 - 10.1016/j.dyepig.2020.108391

DO - 10.1016/j.dyepig.2020.108391

M3 - Article

AN - SCOPUS:85082693795

VL - 179

JO - Dyes and Pigments

JF - Dyes and Pigments

SN - 0143-7208

M1 - 108391

ER -

Rational design of a novel isoindigo-based conjugated terpolymer with panchromatic absorption and its application to polymer solar cells

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Keywords

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