TY - JOUR
T1 - An Isomeric Solid Additive Enables High-Efficiency Polymer Solar Cells Developed Using a Benzo-Difuran-Based Donor Polymer
AU - Chen, Lu
AU - Yi, Jicheng
AU - Ma, Ruijie
AU - Ding, Lu
AU - Dela Peña, Top Archie
AU - Liu, Heng
AU - Chen, Jian
AU - Zhang, Cuifen
AU - Zhao, Chaoyue
AU - Lu, Wen
AU - Wei, Qi
AU - Zhao, Bin
AU - Hu, Huawei
AU - Wu, Jiaying
AU - Ma, Zaifei
AU - Lu, Xinhui
AU - Li, Mingjie
AU - Zhang, Guangye
AU - Li, Gang
AU - Yan, He
N1 - Funding Information:
G.Z. thanks the support from the Guangdong Basic and Applied Basic Research Foundation (2022A1515010875), Guangdong Basic and Applied Basic Research Foundation (2021A1515110017), Natural Science Foundation of Top Talent of SZTU (grant no. 20200205), and Project of Education Commission of Guangdong Province of China (2021KQNCX080). G.L. acknowledges the support from the Research Grants Council (RGC) of Hong Kong (Project Nos 15221320, C5037‐18G), RGC Senior Research Fellowship Scheme (SRFS2223‐5S01), National Natural Science Foundation of China (51961165102), Shenzhen Science and Technology Innovation Commission (JCYJ20200109105003940), Hong Kong Polytechnic University Internal Research Funds: Sir Sze‐yuen Chung Endowed Professorship Fund (8‐8480), RISE (Q‐CDA5), 1‐W15V, 1‐YW4C, and Guangdong‐Hong Kong‐Macao Joint Laboratory for Photonic‐Thermal‐Electrical Energy Materials and Devices (GDSTC No. 2019B121205001). H.Y. appreciates the support from the National Key Research and Development Program of China (No. 2019YFA0705900) funded by MOST, the Basic and Applied Research Major Program of Guangdong Province (No. 2019B030302007), the Shen Zhen Technology and Innovation Commission through (Shenzhen Fundamental Research Program, JCYJ20200109140801751), the Research Grants Council (RGC) of Hong Kong (research fellow scheme RFS2021‐6S05, RIF project R6021‐18, CRF project C6023‐19G, GRF project 16310019, 16310020, 16309221, and 16309822), the Hong Kong Innovation and Technology Commission (ITC‐CNERC14SC01), Foshan‐HKUST (Project NO. FSUST19‐CAT0202), Zhongshan Municipal Bureau of Science and Technology (NO.ZSST20SC02), and Tencent Xplorer Prize. R.M. thanks the PolyU Distinguished Postdoctoral Fellowship (1‐YW4C) for its support. Prof. Harald Ade is appreciated for acquiring the resonant soft X‐ray scattering data.
Funding Information:
G.Z. thanks the support from the Guangdong Basic and Applied Basic Research Foundation (2022A1515010875), Guangdong Basic and Applied Basic Research Foundation (2021A1515110017), Natural Science Foundation of Top Talent of SZTU (grant no. 20200205), and Project of Education Commission of Guangdong Province of China (2021KQNCX080). G.L. acknowledges the support from the Research Grants Council (RGC) of Hong Kong (Project Nos 15221320, C5037-18G), RGC Senior Research Fellowship Scheme (SRFS2223-5S01), National Natural Science Foundation of China (51961165102), Shenzhen Science and Technology Innovation Commission (JCYJ20200109105003940), Hong Kong Polytechnic University Internal Research Funds: Sir Sze-yuen Chung Endowed Professorship Fund (8-8480), RISE (Q-CDA5), 1-W15V, 1-YW4C, and Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices (GDSTC No. 2019B121205001). H.Y. appreciates the support from the National Key Research and Development Program of China (No. 2019YFA0705900) funded by MOST, the Basic and Applied Research Major Program of Guangdong Province (No. 2019B030302007), the Shen Zhen Technology and Innovation Commission through (Shenzhen Fundamental Research Program, JCYJ20200109140801751), the Research Grants Council (RGC) of Hong Kong (research fellow scheme RFS2021-6S05, RIF project R6021-18, CRF project C6023-19G, GRF project 16310019, 16310020, 16309221, and 16309822), the Hong Kong Innovation and Technology Commission (ITC-CNERC14SC01), Foshan-HKUST (Project NO. FSUST19-CAT0202), Zhongshan Municipal Bureau of Science and Technology (NO.ZSST20SC02), and Tencent Xplorer Prize. R.M. thanks the PolyU Distinguished Postdoctoral Fellowship (1-YW4C) for its support. Prof. Harald Ade is appreciated for acquiring the resonant soft X-ray scattering data.
Publisher Copyright:
© 2023 Wiley-VCH GmbH.
PY - 2023/6/28
Y1 - 2023/6/28
N2 - Currently, nearly all high-efficiency organic photovoltaic devices use donor polymers based on the benzo-dithiophene (BDT) unit. To diversify the choices of building blocks for high-performance donor polymers, the use of benzo-difuran (BDF) units is explored, which can achieve reduced steric hindrance, stronger molecular packing, and tunable energy levels. In previous research, the performance of BDF-based devices lagged behind those of BDT-based devices. In this study, a high efficiency (18.4%) is achieved using a BDF-based polymer donor, which is the highest efficiency reported for BDF donor materials to date. The high efficiency is enabled by a donor polymer (D18-Fu) and the aid of a solid additive (2-chloronaphthalene), which is the isomer of the commonly used additive 1-chloronaphthalene. These results revealed the significant effect of 2-chloronaphthalene in optimizing the morphology and enhancing the device parameters. This work not only provides a new building block that can achieve an efficiency comparable to dominant BDT units but also proposes a new solid additive that can replace the widely used 1-chloronaphthalene additive.
AB - Currently, nearly all high-efficiency organic photovoltaic devices use donor polymers based on the benzo-dithiophene (BDT) unit. To diversify the choices of building blocks for high-performance donor polymers, the use of benzo-difuran (BDF) units is explored, which can achieve reduced steric hindrance, stronger molecular packing, and tunable energy levels. In previous research, the performance of BDF-based devices lagged behind those of BDT-based devices. In this study, a high efficiency (18.4%) is achieved using a BDF-based polymer donor, which is the highest efficiency reported for BDF donor materials to date. The high efficiency is enabled by a donor polymer (D18-Fu) and the aid of a solid additive (2-chloronaphthalene), which is the isomer of the commonly used additive 1-chloronaphthalene. These results revealed the significant effect of 2-chloronaphthalene in optimizing the morphology and enhancing the device parameters. This work not only provides a new building block that can achieve an efficiency comparable to dominant BDT units but also proposes a new solid additive that can replace the widely used 1-chloronaphthalene additive.
KW - benzo[1,2-b:4,5-b′]difuran
KW - isomeric solid additives
KW - organic solar cells
KW - power conversion efficiency
UR - https://www.scopus.com/pages/publications/85159829997
U2 - 10.1002/adma.202301231
DO - 10.1002/adma.202301231
M3 - Journal article
AN - SCOPUS:85159829997
SN - 0935-9648
VL - 35
JO - Advanced Materials
JF - Advanced Materials
IS - 26
M1 - 2301231
ER -
SDG 7 Affordable and Clean Energy