Elucidating the impact of molecular weight on morphology, charge transport, photophysics and performance of all-polymer solar cells

2020 ◽  
Vol 8 (40) ◽  
pp. 21070-21083 ◽  
Author(s):  
Duyen K. Tran ◽  
Amélie Robitaille ◽  
I. Jo Hai ◽  
Xiaomei Ding ◽  
Daiki Kuzuhara ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Solar Cells ◽  
Charge Transport ◽  
Polymer Solar Cells ◽  
Polymer Molecular Weight ◽  
Photovoltaic Properties ◽  
Blend Morphology ◽  
And Performance ◽  
The Impact

This work provides a unified understanding on how polymer molecular weight influences the blend photophysics, blend morphology, charge transport, and photovoltaic properties of all-polymer solar cells.

Influence of Acceptor Type and Polymer Molecular Weight on the Mechanical Properties of Polymer Solar Cells

2019 ◽  
Vol 31 (21) ◽  
pp. 9057-9069 ◽  
Author(s):  
Joonhyeong Choi ◽  
Wansun Kim ◽  
Seonha Kim ◽  
Taek-Soo Kim ◽  
Bumjoon J. Kim
Keyword(s):  
Mechanical Properties ◽  
Molecular Weight ◽  
Solar Cells ◽  
Polymer Solar Cells ◽  
Polymer Molecular Weight

Determining the Role of Polymer Molecular Weight for High-Performance All-Polymer Solar Cells: Its Effect on Polymer Aggregation and Phase Separation

2015 ◽  
Vol 137 (6) ◽  
pp. 2359-2365 ◽  
Author(s):  
Hyunbum Kang ◽  
Mohammad Afsar Uddin ◽  
Changyeon Lee ◽  
Ki-Hyun Kim ◽  
Thanh Luan Nguyen ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Solar Cells ◽  
Phase Separation ◽  
High Performance ◽  
Polymer Solar Cells ◽  
Polymer Molecular Weight

Effects of incorporated pyrazine on the interchain packing and photovoltaic properties of wide-bandgap D–A polymers for non-fullerene polymer solar cells

2019 ◽  
Vol 10 (32) ◽  
pp. 4459-4468 ◽  
Author(s):  
Gururaj P. Kini ◽  
Jun Young Choi ◽  
Sung Jae Jeon ◽  
Il Soon Suh ◽  
Doo Kyung Moon
Keyword(s):  
Solar Cells ◽  
Polymer Solar Cells ◽  
Wide Bandgap ◽  
Photovoltaic Properties ◽  
Donor Acceptor ◽  
The Impact

The impact of using pyrazine as an acceptor core for designing donor–acceptor (D–A) based wide bandgap polymers for application in non-fullerene solar cells was evaluated.

scholarly journals Effect of Electron-Withdrawing Fluorine and Cyano Substituents on Photovoltaic Properties of Two-Dimensional Quinoxaline-Based Polymers

2021 ◽  
Author(s):  
Seok Woo Lee ◽  
MD Waseem Hussain ◽  
Sanchari Shome ◽  
Su Ryong Ha ◽  
Jae Taek Oh ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Transport ◽  
Electrochemical Properties ◽  
Polymer Solar Cells ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Two Dimensional ◽  
Strong Electron ◽  
Photovoltaic Properties ◽  
Kinetics Of

Abstract In this study, strong electron-withdrawing fluorine (F) and cyano (CN) substituents are selectively incorporated into the quinoxaline unit of two-dimensional (2D) D–A-type polymers to investigate their effects on the photovoltaic properties of the polymers. To construct the 2D polymeric structure, electron-donating benzodithiophene and methoxy-substituted triphenylamine are directly linked to the horizontal and vertical directions of the quinoxaline acceptor, respectively. After analyzing the structural, optical, and electrochemical properties of the resultant F- and CN-substituted polymers, labeled as PBCl-MTQF and PBCl-MTQCN, respectively, inverted-type polymer solar cells with a non-fullerene Y6 acceptor are fabricated to investigate the photovoltaic performances of the polymers. It is discovered that the maximum power conversion efficiency of PBCl-MTQF is 7.48%, whereas that of PBCl-MTQCN is limited to 3.10%. This significantly reduced PCE of the device based on PBCl-MTQCN is ascribed to the formation of irregular, large aggregates in the active layer, which can readily aggravate the charge recombination and charge transport kinetics of the device. Therefore, the photovoltaic performance of 2D quinoxaline-based D–A-type polymers is significantly affected by the type of electron-withdrawing substituent.

scholarly journals Effect of electron-withdrawing fluorine and cyano substituents on photovoltaic properties of two-dimensional quinoxaline-based polymers

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Seok Woo Lee ◽  
MD. Waseem Hussain ◽  
Sanchari Shome ◽  
Su Ryong Ha ◽  
Jae Taek Oh ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Transport ◽  
Electrochemical Properties ◽  
Polymer Solar Cells ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Two Dimensional ◽  
Strong Electron ◽  
Photovoltaic Properties ◽  
Kinetics Of

AbstractIn this study, strong electron-withdrawing fluorine (F) and cyano (CN) substituents are selectively incorporated into the quinoxaline unit of two-dimensional (2D) D–A-type polymers to investigate their effects on the photovoltaic properties of the polymers. To construct the 2D polymeric structure, electron-donating benzodithiophene and methoxy-substituted triphenylamine are directly linked to the horizontal and vertical directions of the quinoxaline acceptor, respectively. After analyzing the structural, optical, and electrochemical properties of the resultant F- and CN-substituted polymers, labeled as PBCl-MTQF and PBCl-MTQCN, respectively, inverted-type polymer solar cells with a non-fullerene Y6 acceptor are fabricated to investigate the photovoltaic performances of the polymers. It is discovered that the maximum power conversion efficiency of PBCl-MTQF is 7.48%, whereas that of PBCl-MTQCN is limited to 3.52%. This significantly reduced PCE of the device based on PBCl-MTQCN is ascribed to the formation of irregular, large aggregates in the active layer, which can readily aggravate the charge recombination and charge transport kinetics of the device. Therefore, the photovoltaic performance of 2D quinoxaline-based D–A-type polymers is significantly affected by the type of electron-withdrawing substituent.

scholarly journals The effect of polymer molecular weight on the performance of PTB7-Th:O-IDTBR non-fullerene organic solar cells

2018 ◽  
Vol 6 (20) ◽  
pp. 9506-9516 ◽  
Author(s):  
Sebastian F. Hoefler ◽  
Thomas Rath ◽  
Nadiia Pastukhova ◽  
Egon Pavlica ◽  
Dorothea Scheunemann ◽  
...  
Keyword(s):  
Activation Energy ◽  
Molecular Weight ◽  
Solar Cells ◽  
Charge Transport ◽  
Carrier Concentration ◽  
Organic Solar Cells ◽  
Recombination Rate ◽  
Polymer Molecular Weight ◽  
Transport Carrier

Activation energy for charge transport, carrier concentration and recombination rate are identified to strongly affect the device characteristics.

Influence of backbone modification of difluoroquinoxaline-based copolymers on the interchain packing, blend morphology and photovoltaic properties of nonfullerene organic solar cells

2019 ◽  
Vol 7 (6) ◽  
pp. 1681-1689 ◽  
Author(s):  
Yuxiang Li ◽  
Minseok Kim ◽  
Ziang Wu ◽  
Changyeon Lee ◽  
Young Woong Lee ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Photovoltaic Properties ◽  
Polymer Backbone ◽  
Crystalline Orientation ◽  
Blend Morphology ◽  
Donor And Acceptor ◽  
Backbone Modification ◽  
The Impact ◽  
Acceptor Molecules

The impact of the crystalline orientation of donor and acceptor molecules on the photovoltaic properties with modification of polymer backbone structures.

scholarly journals Efficient solar cells are more stable: the impact of polymer molecular weight on performance of organic photovoltaics

2016 ◽  
Vol 4 (19) ◽  
pp. 7274-7280 ◽  
Author(s):  
Z. Ding ◽  
J. Kettle ◽  
M. Horie ◽  
S. W. Chang ◽  
G. C. Smith ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Solar Cells ◽  
Organic Photovoltaics ◽  
High Efficiency ◽  
Research Area ◽  
Organic Photovoltaic ◽  
Polymer Molecular Weight ◽  
The Impact

The principle remaining challenge in the research area of organic photovoltaic (OPV) materials is to develop solar cells that combine high efficiency, stability and reproducibility.

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