Comparison of the mechanical properties of polymer blend and main-chain conjugated copolymer films with donor–acceptor heterojunctions

Young Un Kim; Boo Soo Ma; Youngno Kim; Su Hong Park; Hungu Kang; Hyo Jae Yoon; Min Ju Cho; Taek Soo Kim; Jung Hyun Kim; Dong Hoon Choi

doi:10.1016/j.cej.2021.128952

Comparison of the mechanical properties of polymer blend and main-chain conjugated copolymer films with donor–acceptor heterojunctions

Young Un Kim, Boo Soo Ma, Youngno Kim, Su Hong Park, Hungu Kang, Hyo Jae Yoon, Min Ju Cho, Taek Soo Kim, Jung Hyun Kim, Dong Hoon Choi

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

15 Citations (Scopus)

Abstract

To implement a highly flexible polymer solar cell (PSC), the mechanical properties of the material constituting the active layer are considered crucial, having a significant influence on the stability of the device. In this study, the mechanical properties of a main-chain conjugated copolymer (PBDT2T-b-PNDI2T) containing donor- and acceptor-based macromolecular species in the polymer backbone was measured and compared with that of donor and acceptor polymer blend film (P(BDT2T):P(NDI2T)). It was observed that the PBDT2T-b-PNDI2T active layer exhibited a higher crack-onset-strain and toughness compared to P(BDT2T):P(NDI2T) active layer. Correspondingly, the YTRON/polyethylene naphthalate (PEN) based flexible PSC with a PBDT2T-b-PNDI2T active layer was used, which exhibited superior mechanical stability under multiple bending conditions. The results of this study indicate that flexible PSCs with excellent durability can be developed by replacing the polymer blend used for all-PSCs with PBDT2T-b-PNDI2T as the active layer material for highly efficient future applications.

Original language	English
Article number	128952
Journal	Chemical Engineering Journal
Volume	415
DOIs	https://doi.org/10.1016/j.cej.2021.128952
Publication status	Published - 2021 Jul 1

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF-2020R1I1A1A01066897, 2019R1A2C2002647, 2017K1A3A1A05069766, and 2019R1A6A1A11044070).

Publisher Copyright:
© 2021

Keywords

Bending stability
Flexible device
Mechanical property
Polymer solar cell
Semiconducting polymers

ASJC Scopus subject areas

General Chemistry
Environmental Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

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10.1016/j.cej.2021.128952

Cite this

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title = "Comparison of the mechanical properties of polymer blend and main-chain conjugated copolymer films with donor–acceptor heterojunctions",

abstract = "To implement a highly flexible polymer solar cell (PSC), the mechanical properties of the material constituting the active layer are considered crucial, having a significant influence on the stability of the device. In this study, the mechanical properties of a main-chain conjugated copolymer (PBDT2T-b-PNDI2T) containing donor- and acceptor-based macromolecular species in the polymer backbone was measured and compared with that of donor and acceptor polymer blend film (P(BDT2T):P(NDI2T)). It was observed that the PBDT2T-b-PNDI2T active layer exhibited a higher crack-onset-strain and toughness compared to P(BDT2T):P(NDI2T) active layer. Correspondingly, the YTRON/polyethylene naphthalate (PEN) based flexible PSC with a PBDT2T-b-PNDI2T active layer was used, which exhibited superior mechanical stability under multiple bending conditions. The results of this study indicate that flexible PSCs with excellent durability can be developed by replacing the polymer blend used for all-PSCs with PBDT2T-b-PNDI2T as the active layer material for highly efficient future applications.",

keywords = "Bending stability, Flexible device, Mechanical property, Polymer solar cell, Semiconducting polymers",

author = "Kim, {Young Un} and Ma, {Boo Soo} and Youngno Kim and Park, {Su Hong} and Hungu Kang and Yoon, {Hyo Jae} and Cho, {Min Ju} and Kim, {Taek Soo} and Kim, {Jung Hyun} and Choi, {Dong Hoon}",

note = "Funding Information: This work was supported by the National Research Foundation of Korea (NRF-2020R1I1A1A01066897, 2019R1A2C2002647, 2017K1A3A1A05069766, and 2019R1A6A1A11044070). Publisher Copyright: {\textcopyright} 2021",

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AU - Ma, Boo Soo

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AU - Park, Su Hong

AU - Kang, Hungu

AU - Yoon, Hyo Jae

AU - Cho, Min Ju

AU - Kim, Taek Soo

AU - Kim, Jung Hyun

AU - Choi, Dong Hoon

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PY - 2021/7/1

Y1 - 2021/7/1

N2 - To implement a highly flexible polymer solar cell (PSC), the mechanical properties of the material constituting the active layer are considered crucial, having a significant influence on the stability of the device. In this study, the mechanical properties of a main-chain conjugated copolymer (PBDT2T-b-PNDI2T) containing donor- and acceptor-based macromolecular species in the polymer backbone was measured and compared with that of donor and acceptor polymer blend film (P(BDT2T):P(NDI2T)). It was observed that the PBDT2T-b-PNDI2T active layer exhibited a higher crack-onset-strain and toughness compared to P(BDT2T):P(NDI2T) active layer. Correspondingly, the YTRON/polyethylene naphthalate (PEN) based flexible PSC with a PBDT2T-b-PNDI2T active layer was used, which exhibited superior mechanical stability under multiple bending conditions. The results of this study indicate that flexible PSCs with excellent durability can be developed by replacing the polymer blend used for all-PSCs with PBDT2T-b-PNDI2T as the active layer material for highly efficient future applications.

AB - To implement a highly flexible polymer solar cell (PSC), the mechanical properties of the material constituting the active layer are considered crucial, having a significant influence on the stability of the device. In this study, the mechanical properties of a main-chain conjugated copolymer (PBDT2T-b-PNDI2T) containing donor- and acceptor-based macromolecular species in the polymer backbone was measured and compared with that of donor and acceptor polymer blend film (P(BDT2T):P(NDI2T)). It was observed that the PBDT2T-b-PNDI2T active layer exhibited a higher crack-onset-strain and toughness compared to P(BDT2T):P(NDI2T) active layer. Correspondingly, the YTRON/polyethylene naphthalate (PEN) based flexible PSC with a PBDT2T-b-PNDI2T active layer was used, which exhibited superior mechanical stability under multiple bending conditions. The results of this study indicate that flexible PSCs with excellent durability can be developed by replacing the polymer blend used for all-PSCs with PBDT2T-b-PNDI2T as the active layer material for highly efficient future applications.

KW - Bending stability

KW - Flexible device

KW - Mechanical property

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Comparison of the mechanical properties of polymer blend and main-chain conjugated copolymer films with donor–acceptor heterojunctions

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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