The effect of aggregation behavior on photovoltaic performances in benzodithiophene-thiazolothiazole-based wide band-gap conjugated polymers with side chain position changes

2020 ◽  
Vol 11 (9) ◽  
pp. 1629-1636 ◽  
Author(s):  
Pan Wan ◽  
Cunbin An ◽  
Tao Zhang ◽  
Kangqiao Ma ◽  
Ningning Liang ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Band Gap ◽  
Wide Band ◽  
Aggregation Behavior ◽  
Side Chain ◽  
Wide Band Gap ◽  
Photovoltaic Properties

Two thiazolothiazole-based polymers were designed and synthesized, which exhibited significantly different aggregation and photovoltaic properties.

Achieving efficient polymer solar cells based on benzodithiophene–thiazole-containing wide band gap polymer donors by changing the linkage patterns of two thiazoles

2020 ◽  
Vol 44 (30) ◽  
pp. 13100-13107
Author(s):  
Changguo Xue ◽  
Yu Tang ◽  
Shihui Liu ◽  
He Feng ◽  
Shiqin Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conjugated Polymers ◽  
Band Gap ◽  
Polymer Solar Cells ◽  
Wide Band ◽  
Wide Band Gap

Two conjugated polymers with different combinations of two thiazoles were synthesized to study their photovoltaic performances.

scholarly journals Molecular Engineering Enhances the Charge Carriers Transport in Wide Band-Gap Polymer Donors Based Polymer Solar Cells

Molecules ◽  
2020 ◽  
Vol 25 (18) ◽  
pp. 4101
Author(s):  
Siyang Liu ◽  
Shuwang Yi ◽  
Peiling Qing ◽  
Weijun Li ◽  
Bin Gu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
High Efficiency ◽  
Polymer Solar Cells ◽  
Acid Methyl Ester ◽  
Wide Band ◽  
Molecular Engineering ◽  
Wide Band Gap ◽  
Photovoltaic Properties ◽  
Solvent Vapor

The novel and appropriate molecular design for polymer donors are playing an important role in realizing high-efficiency and high stable polymer solar cells (PSCs). In this work, four conjugated polymers (PIDT-O, PIDTT-O, PIDT-S and PIDTT-S) with indacenodithiophene (IDT) and indacenodithieno [3,2-b]thiophene (IDTT) as the donor units, and alkoxy-substituted benzoxadiazole and benzothiadiazole derivatives as the acceptor units have been designed and synthesized. Taking advantages of the molecular engineering on polymer backbones, these four polymers showed differently photophysical and photovoltaic properties. They exhibited wide optical bandgaps of 1.88, 1.87, 1.89 and 1.91 eV and quite impressive hole mobilities of 6.01 × 10−4, 7.72 × 10−4, 1.83 × 10−3, and 1.29 × 10−3 cm2 V−1 s−1 for PIDT-O, PIDTT-O, PIDT-S and PIDTT-S, respectively. Through the photovoltaic test via using PIDT-O, PIDTT-O, PIDT-S and PIDTT-S as donor materials and [6,6]-phenyl-C-71-butyric acid methyl ester (PC71BM) as acceptor materials, all the PSCs presented the high open circuit voltages (Vocs) over 0.85 V, whereas the PIDT-S and PIDTT-S based devices showed higher power conversion efficiencies (PCEs) of 5.09% and 4.43%, respectively. Interestingly, the solvent vapor annealing (SVA) treatment on active layers could improve the fill factors (FFs) extensively for these four polymers. For PIDT-S and PIDTT-S, the SVA process improved the FFs exceeding 71%, and ultimately the PCEs were increased to 6.05%, and 6.12%, respectively. Therefore, this kind of wide band-gap polymers are potentially candidates as efficient electron-donating materials for constructing high-performance PSCs.

Wide band gap diketopyrrolopyrrole-based conjugated polymers incorporating biphenyl units applied in polymer solar cells

2014 ◽  
Vol 50 (6) ◽  
pp. 679-681 ◽  
Author(s):  
Weiwei Li ◽  
Alice Furlan ◽  
W. S. Christian Roelofs ◽  
Koen H. Hendriks ◽  
Gijs W. P. van Pruissen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conjugated Polymers ◽  
Band Gap ◽  
Polymer Solar Cells ◽  
Wide Band ◽  
Wide Band Gap

Wide band gap copolymers based on phthalimide: synthesis, characterization, and photovoltaic properties with 3.70% efficiency

2013 ◽  
Vol 4 (6) ◽  
pp. 2174 ◽  
Author(s):  
Jianhua Huang ◽  
Xue Wang ◽  
Chuanlang Zhan ◽  
Yan Zhao ◽  
Yuxi Sun ◽  
...  
Keyword(s):  
Band Gap ◽  
Wide Band ◽  
Wide Band Gap ◽  
Photovoltaic Properties

Branched versus linear: side-chain effect on fluorinated wide bandgap donors and their applications in organic solar cells

2020 ◽  
Vol 44 (3) ◽  
pp. 753-760
Author(s):  
Tainan Duan ◽  
Ru-Ze Liang ◽  
Yingying Fu ◽  
Yuying Chang ◽  
Zhipeng Kan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Organic Solar Cells ◽  
Organic Molecules ◽  
Wide Band ◽  
Wide Bandgap ◽  
Side Chain ◽  
Wide Band Gap ◽  
Solution Processed ◽  
Small Organic Molecules

We report a new series of wide band-gap small organic molecules as donor-materials featuring an indaceno[1,2-b:5,6-b′]dithiophene (IDT) core and fluorinated thiophene linkers for solution-processed organic solar cells.

Manipulating the Intermolecular Stacking of Polymeric Donors for Efficient Organic Solar Cells

2021 ◽  
Author(s):  
Yong Zhao ◽  
Yu Lu ◽  
Yonghai Li ◽  
Xiao Kang ◽  
Xichang Bao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conjugated Polymers ◽  
Band Gap ◽  
Organic Solar Cells ◽  
High Performance ◽  
Wide Band ◽  
Wide Band Gap

Most polymer donors developed so far for high-performance non-fullerene OSCs are designed in planar molecular geometries containing BDT units. In this work, two D−A conjugated polymers with wide band gap,...

Side chain effect of nonfullerene acceptors on the photovoltaic performance of wide band gap polymer solar cells

2016 ◽  
Vol 220 ◽  
pp. 578-584 ◽  
Author(s):  
Ran Hou ◽  
Shiyu Feng ◽  
Xue Gong ◽  
Yahui Liu ◽  
Jicheng Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Polymer Solar Cells ◽  
Photovoltaic Performance ◽  
Wide Band ◽  
Side Chain ◽  
Wide Band Gap

Design of asymmetric benzodithiophene based wide band-gap conjugated polymers toward efficient polymer solar cells promoted by a low boiling point additive

2018 ◽  
Vol 6 (11) ◽  
pp. 2806-2813 ◽  
Author(s):  
Yonghai Li ◽  
Linrui Duan ◽  
Deyu Liu ◽  
Weichao Chen ◽  
Xichang Bao ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conjugated Polymers ◽  
Band Gap ◽  
Boiling Point ◽  
Polymer Solar Cells ◽  
Wide Band ◽  
Wide Band Gap ◽  
Photovoltaic Materials

Here, we reported two conjugated photovoltaic materials based on asymmetric benzodithiophene units and presented a low boiling point additive to optimize devices.

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