Ternary Blended Fullerene‐Free Polymer Solar Cells with 16.5% Efficiency Enabled with a Higher‐LUMO‐Level Acceptor to Improve Film Morphology
Abstract
Abstract Ternary approaches to solar cell design utilizing a small bandgap nonfullerene acceptor as the near infrared absorber to increase the short‐circuit current density always decreases the open‐circuit voltage. Herein, a highly efficient polymer solar cell with an impressive efficiency of 16.28 ± 0.20% enabled by an effective voltage‐increased ternary blended fullerene‐free material approach is reported. In this approach, the structural similarity between the host and the higher‐LUMO‐level guest enables the two acceptors to be synergized, obtaining increased open‐circuit voltage and fill factor and a small increase of short‐circuit current density. The same beneficial effects are demonstrated by using two host binary systems. The homogeneous fine film morphologies and the π–π stacking patterns of the host blend are well maintained, while larger donor and acceptor phases and increased lamellar crystallinity, increased charge mobilities, and reduced monomolecular recombination can be achieved upon addition of the guest nonfullerene acceptor. The increased charge mobilities and reduced monomolecular recombination not only contribute to the improved fill factor but also enable the best devices to be fabricated with a relatively thicker ternary blended active layer (110 vs 100 nm). This, combined with the absorption from the added guest acceptor, contribute to the increased short‐circuit current.
- Authors:
-
[4];
- College of Chemistry and Environmental Science Inner Mongolia Normal University Hohhot 010022 China, CAS Key Laboratory of Photochemistry Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China, Beijing Key Laboratory for Optical Materials and Photonic Devices Department of Chemistry Capital Normal University Beijing 100048 China
- Beijing Key Laboratory for Optical Materials and Photonic Devices Department of Chemistry Capital Normal University Beijing 100048 China
- State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong University Xi'an 710049 China
- College of Chemistry and Environmental Science Inner Mongolia Normal University Hohhot 010022 China, CAS Key Laboratory of Photochemistry Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- CAS Key Laboratory of Photochemistry Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1543349
- Grant/Contract Number:
- DE‐AC02‐05CH11231
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- Advanced Energy Materials
- Additional Journal Information:
- Journal Name: Advanced Energy Materials Journal Volume: 9 Journal Issue: 33; Journal ID: ISSN 1614-6832
- Publisher:
- Wiley Blackwell (John Wiley & Sons)
- Country of Publication:
- Germany
- Language:
- English
Citation Formats
Li, Kun, Wu, Yishi, Tang, Yabing, Pan, Ming‐Ao, Ma, Wei, Fu, Hongbing, Zhan, Chuanlang, and Yao, Jiannian. Ternary Blended Fullerene‐Free Polymer Solar Cells with 16.5% Efficiency Enabled with a Higher‐LUMO‐Level Acceptor to Improve Film Morphology. Germany: N. p., 2019.
Web. doi:10.1002/aenm.201901728.
Li, Kun, Wu, Yishi, Tang, Yabing, Pan, Ming‐Ao, Ma, Wei, Fu, Hongbing, Zhan, Chuanlang, & Yao, Jiannian. Ternary Blended Fullerene‐Free Polymer Solar Cells with 16.5% Efficiency Enabled with a Higher‐LUMO‐Level Acceptor to Improve Film Morphology. Germany. https://doi.org/10.1002/aenm.201901728
Li, Kun, Wu, Yishi, Tang, Yabing, Pan, Ming‐Ao, Ma, Wei, Fu, Hongbing, Zhan, Chuanlang, and Yao, Jiannian. Mon .
"Ternary Blended Fullerene‐Free Polymer Solar Cells with 16.5% Efficiency Enabled with a Higher‐LUMO‐Level Acceptor to Improve Film Morphology". Germany. https://doi.org/10.1002/aenm.201901728.
@article{osti_1543349,
title = {Ternary Blended Fullerene‐Free Polymer Solar Cells with 16.5% Efficiency Enabled with a Higher‐LUMO‐Level Acceptor to Improve Film Morphology},
author = {Li, Kun and Wu, Yishi and Tang, Yabing and Pan, Ming‐Ao and Ma, Wei and Fu, Hongbing and Zhan, Chuanlang and Yao, Jiannian},
abstractNote = {Abstract Ternary approaches to solar cell design utilizing a small bandgap nonfullerene acceptor as the near infrared absorber to increase the short‐circuit current density always decreases the open‐circuit voltage. Herein, a highly efficient polymer solar cell with an impressive efficiency of 16.28 ± 0.20% enabled by an effective voltage‐increased ternary blended fullerene‐free material approach is reported. In this approach, the structural similarity between the host and the higher‐LUMO‐level guest enables the two acceptors to be synergized, obtaining increased open‐circuit voltage and fill factor and a small increase of short‐circuit current density. The same beneficial effects are demonstrated by using two host binary systems. The homogeneous fine film morphologies and the π–π stacking patterns of the host blend are well maintained, while larger donor and acceptor phases and increased lamellar crystallinity, increased charge mobilities, and reduced monomolecular recombination can be achieved upon addition of the guest nonfullerene acceptor. The increased charge mobilities and reduced monomolecular recombination not only contribute to the improved fill factor but also enable the best devices to be fabricated with a relatively thicker ternary blended active layer (110 vs 100 nm). This, combined with the absorption from the added guest acceptor, contribute to the increased short‐circuit current.},
doi = {10.1002/aenm.201901728},
journal = {Advanced Energy Materials},
number = 33,
volume = 9,
place = {Germany},
year = {Mon Jul 22 00:00:00 EDT 2019},
month = {Mon Jul 22 00:00:00 EDT 2019}
}
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