High-performance ternary polymer solar cells using wide-bandgap biaxially extended octithiophene-based conjugated polymers

2018 ◽  
Vol 6 (26) ◽  
pp. 6920-6928 ◽  
Author(s):  
Chang-Hung Tsai ◽  
Yu-An Su ◽  
Po-Chen Lin ◽  
Chien-Chung Shih ◽  
Hung-Chin Wu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conjugated Polymers ◽  
High Performance ◽  
Polymer Solar Cells ◽  
Material Design ◽  
Wide Bandgap ◽  
The Third ◽  
Alternating Copolymers ◽  
Ternary Polymer ◽  
P Type

A new wide-bandgap (Eg) material design for realizing efficient ternary BHJ systems is manifested herein by using p-type biaxially extended thiophene-based alternating copolymers as the third photoactive component.

scholarly journals Effects of the Electron-Deficient Third Components in n-Type Terpolymers on Morphology and Performance of All-Polymer Solar Cells

2020 ◽  
Vol 02 (03) ◽  
pp. 214-222
Author(s):  
Bin Liu ◽  
Huiliang Sun ◽  
Chang Woo Koh ◽  
Mengyao Su ◽  
Bao Tu ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Noncovalent Interactions ◽  
Polymer Solar Cells ◽  
Energy Levels ◽  
Building Blocks ◽  
The Third ◽  
Donor Acceptor ◽  
And Performance ◽  
P Type

Compared with p-type terpolymers, less effort has been devoted to n-type analogs. Herein, we synthesized a series of n-type terpolymers via incorporating three electron-deficient third components including thienopyrroledione (TPD), phthalimide, and benzothiadiazole into an imide-functionalized parent n-type copolymer to tune optoelectronic properties without sacrificing the n-type characteristics. Due to effects of the third components with different electron-accepting ability and solubility, the resulting three polymers feature distinct energy levels and crystallinity. In addition, heteroatoms (S, O, and N) attached on the third components trigger intramolecular noncovalent interactions, which can increase molecule planarity and have a significant effect on the packing structures of the polymer films. As a result, the best power conversion efficiency of 8.28% was achieved from all-polymer solar cells (all-PSCs) based on n-type terpolymer containing TPD. This is contributed by promoted electron mobility and face-on polymer packing, showing the pronounced advantages of the TPD used as a third component for thriving efficient n-type terpolymers. The generality is also successfully validated in a benchmark polymer donor/acceptor system by introducing TPD into the benchmark n-type polymer N2200. The results demonstrate the feasibility of introducing suitable electron-deficient building blocks as the third components for high-performance n-type terpolymers toward efficient all-PSCs.

scholarly journals High-Performance Ternary Organic Solar Cells Enabled by Combining Fullerene and Nonfullerene Electron Acceptors

2019 ◽  
Vol 01 (01) ◽  
pp. 030-037 ◽  
Author(s):  
Jianyun Zhang ◽  
Wenrui Liu ◽  
Shengjie Xu ◽  
Xiaozhang Zhu
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
High Performance ◽  
Power Conversion ◽  
Wide Bandgap ◽  
The Third ◽  
Bimolecular Recombination ◽  
Conversion Efficiencies ◽  
Wide Bandgap Polymer ◽  
Nonfullerene Acceptor

Recently, by elaborately designing nonfullerene acceptors and selecting suitable polymer donors great progresses have been made towards binary organic solar cells (OSCs) with power conversion efficiencies (PCEs) over 15%. Ternary organic photovoltaics by introducing a third component into the host binary system is recognized to be highly effective to elevate the performance through extending the light absorption, manipulating the recombination behavior of the carriers, and improving the morphology of the active layer. In this work, we synthesized a new electron-acceptor ZITI-4F matching it with the wide-bandgap polymer donor PBDB-T The PBDB-T:ZITI-4F-based OSC showed a high PCE of 12.33%. After introducing 40% of PC71BM as the third component, the ternary device achieved an improved PCE of 13.40% with simultaneously improved photovoltaic parameters. The higher performance of the ternary device can be attributed to the improved and more balanced charge mobility, reduced bimolecular recombination, and more favorable morphology. These results indicate that the cooperation of a fullerene-based acceptor and a nonfullerene acceptor to fabricate ternary OSCs is an effective approach to optimizing morphology and therefore to increase the performance of OSCs.

Alternating Copolymers of Cyclopenta[2,1-b;3,4-b′]dithiophene and Thieno[3,4-c]pyrrole-4,6-dione for High-Performance Polymer Solar Cells

2011 ◽  
Vol 21 (17) ◽  
pp. 3331-3336 ◽  
Author(s):  
Zhao Li ◽  
Sai-Wing Tsang ◽  
Xiaomei Du ◽  
Ludmila Scoles ◽  
Gilles Robertson ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Polymer Solar Cells ◽  
Alternating Copolymers ◽  
High Performance Polymer

High-performance nonfullerene polymer solar cells based on a fluorinated wide bandgap copolymer with a high open-circuit voltage of 1.04 V

2017 ◽  
Vol 5 (42) ◽  
pp. 22180-22185 ◽  
Author(s):  
Yan Wang ◽  
Qunping Fan ◽  
Xia Guo ◽  
Wanbin Li ◽  
Bing Guo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Energy Loss ◽  
Small Molecule ◽  
High Performance ◽  
Open Circuit Voltage ◽  
Polymer Solar Cells ◽  
Wide Bandgap ◽  
Open Circuit

Nonfullerene polymer solar cells based on a polymer donor PM6 containing a fluorinated-thienyl benzodithiophene unit and a small molecule acceptor ITIC showed a PCE of 9.7% with a Voc of up to 1.04 V and an energy loss as low as 0.51 eV.

Wide bandgap copolymers with vertical benzodithiophene dicarboxylate for high-performance polymer solar cells with an efficiency up to 7.49%

2016 ◽  
Vol 4 (48) ◽  
pp. 18792-18803 ◽  
Author(s):  
Qiang Tao ◽  
Tao Liu ◽  
Linrui Duan ◽  
Yufeng Cai ◽  
Wenjing Xiong ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Polymer Solar Cells ◽  
Wide Bandgap ◽  
High Performance Polymer

A novel vertical carboxylate functionalized benzodithiophene unit was designed as an election-accepting block to build D–A type copolymers, and a high Voc of 1.03 V and a significant PCE of 7.49% were achieved.

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