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Easily Accessible Low Band Gap Polymer for Efficient Nonfullerene Polymer Solar Cells with a Low E-loss of 0.55 eV

Authors
Park, MinwooJung, Jae Woong
Issue Date
Feb-2019
Publisher
AMER CHEMICAL SOC
Keywords
polymer solar cells; nonfullerene acceptors; low cost; high efficiency
Citation
ACS APPLIED MATERIALS & INTERFACES, v.11, no.5, pp 5435 - 5440
Pages
6
Journal Title
ACS APPLIED MATERIALS & INTERFACES
Volume
11
Number
5
Start Page
5435
End Page
5440
URI
https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/3834
DOI
10.1021/acsami.8b20276
ISSN
1944-8244
1944-8252
Abstract
Polymer solar cells (PSCs) have been attracting attention as a promising photovoltaic technology, and power conversion efficiencies (PCEs) of over 14% have been demonstrated. However, the state-of-the-art conjugated polymers for PSCs are based on the complex molecular structure that requires several steps for synthesis and purification, which impedes low materials cost for the PSCs. Thus, it is a key challenge to develop high-performance conjugated polymers with easily accessible building blocks for applications in practical PSCs. Here, a novel low band gap polymer (PFBTBOX) which comprises readily available building blocks was designed and synthesized to be used as an electron donor for PSCs. Affirmative optoelectronic properties of PFBTBOX for photovoltaic applications resulted in high PCEs up to 10.20 and 8.11% with nonfullerene and fullerene acceptors, respectively. Moreover, PFBTBOX exhibited minimal energy loss as low as 0.55 eV with a nonfullerene acceptor, indicating that PFBTBOX is a promising electron donor polymer for practical PSCs with high efficiency exceeding 10%.
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공과대학 (화공생명공학부)
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