F-Substituted oligothiophenes serve as nonfullerene acceptors in polymer solar cells with open-circuit voltages >1 V

2018 ◽  
Vol 6 (20) ◽  
pp. 9368-9372 ◽  
Author(s):  
Tainan Duan ◽  
Maxime Babics ◽  
Akmaral Seitkhan ◽  
Yuliar Firdaus ◽  
Ru-Ze Liang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Polymer Solar Cells ◽  
Open Circuit ◽  
Low Bandgap ◽  
Open Circuit Voltages

F-Substituted oligothiophenes were designed and used as nonfullerene acceptors in BHJ solar cells. With low-bandgap polymer donors, the solar cell devices reach PCEs of up to 4.5% and open-circuit voltages >1 V.

N-acyl-dithieno[3,2-b:2’,3’-d]pyrrole-based low bandgap copolymers affording improved open-circuit voltages and efficiencies in polymer solar cells

2015 ◽  
Vol 136 ◽  
pp. 70-77 ◽  
Author(s):  
Jurgen Kesters ◽  
Pieter Verstappen ◽  
Wouter Vanormelingen ◽  
Jeroen Drijkoningen ◽  
Tim Vangerven ◽  
...  
Keyword(s):  
Solar Cells ◽  
Polymer Solar Cells ◽  
Open Circuit ◽  
Low Bandgap ◽  
Open Circuit Voltages

Incorporating a vertical BDT unit in conjugated polymers for drastically improving the open-circuit voltage of polymer solar cells

2016 ◽  
Vol 40 (6) ◽  
pp. 5300-5305 ◽  
Author(s):  
Shuguang Wen ◽  
Manjun Xiao ◽  
Wenfei Shen ◽  
Chuantao Gu ◽  
Dangqiang Zhu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Conjugated Polymers ◽  
Open Circuit Voltage ◽  
Polymer Solar Cells ◽  
Open Circuit ◽  
Open Circuit Voltages

High open circuit voltages (Vocs) of over 1.0 V were obtained for solar cell devices based on vertical BDT-containing conjugated polymers.

Comment on “Fullerene-based materials for solar cell applications: design of novel acceptors for efficient polymer solar cells – a DFT study” by A. Mohajeri and A. Omidvar, Phys. Chem. Chem. Phys., 2015, 17, 22367

2016 ◽  
Vol 18 (5) ◽  
pp. 4216-4218 ◽  
Author(s):  
Denis Sh. Sabirov ◽  
Anton O. Terentyev ◽  
Igor S. Shepelevich
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Organic Solar Cells ◽  
Polymer Solar Cells ◽  
Chem Phys ◽  
Open Circuit ◽  
Dft Study ◽  
Fullerene Derivatives ◽  
Open Circuit Voltages ◽  
Phys Chem Chem Phys

In contrast to the previous study, we report on no correlation between mean polarizability of fullerene derivatives and open-circuit voltages of organic solar cells based on them.

Ladder-type dithienocyclopentadibenzothiophene-cored wide-bandgap polymers for efficient non-fullerene solar cells with large open-circuit voltages

2019 ◽  
Vol 7 (7) ◽  
pp. 3307-3316 ◽  
Author(s):  
Qisheng Tu ◽  
Changquan Tang ◽  
Qingdong Zheng
Keyword(s):  
Solar Cells ◽  
Polymer Solar Cells ◽  
Wide Bandgap ◽  
Open Circuit ◽  
Open Circuit Voltages ◽  
Excellent Stability

Novel wide-bandgap copolymers based on ladder-type dithienocyclopentadibenzothiophene were developed for polymer solar cells with 9.46% efficiency and excellent stability.

Reduced open-circuit voltage loss for highly efficient low-bandgap perovskite solar cells via suppression of silver diffusion

2019 ◽  
Vol 7 (29) ◽  
pp. 17324-17333 ◽  
Author(s):  
Meiyue Liu ◽  
Ziming Chen ◽  
Yongchao Yang ◽  
Hin-Lap Yip ◽  
Yong Cao
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Energy Level ◽  
Open Circuit Voltage ◽  
Perovskite Solar Cells ◽  
Perovskite Solar Cell ◽  
Open Circuit ◽  
Perovskite Layer ◽  
Low Bandgap ◽  
Voltage Loss

Ag diffused across the PCBM layer increased the trap density and down-shifted the energy level of the perovskite layer. Fortunately, PCBM/ZnO layer efficiently suppressed the Ag diffusion, resulting in a perovskite solar cell with PCE of 18.1%.

Polymer solar cells based on D–A low bandgap copolymers containing fluorinated side chains of thiadiazoloquinoxaline acceptor and benzodithiophene donor units

2018 ◽  
Vol 42 (3) ◽  
pp. 1626-1633 ◽  
Author(s):  
M. L. Keshtov ◽  
S. A. Kuklin ◽  
A. R. Khokhlov ◽  
I. O. Konstantinov ◽  
N. V. Nekrasova ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Polymer Solar Cell ◽  
Polymer Solar Cells ◽  
Power Conversion ◽  
Side Chains ◽  
Low Bandgap

The increase in the fluorine atoms in the copolymer improves the power conversion efficiency of the polymer solar cell.

Amorphous Silicon-Carbon Alloys for Solar Cells

1993 ◽  
Vol 297 ◽  
Author(s):  
Yuan-Min Li
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Amorphous Silicon ◽  
Light Exposure ◽  
Open Circuit ◽  
Hydrogen Dilution ◽  
Silicon Carbon ◽  
Hydrogenated Amorphous ◽  
Substrate Temperatures ◽  
Open Circuit Voltages

Recent efforts to optimize undoped, glow-discharge hydrogenated amorphous silicon-carbon alloys (a-SiC:H) with 1.9-2.0 eV bandgaps for solar cell applications are reviewed. Hydrogen dilution coupled with relatively low substrate temperatures (below 200 °C) have led to great improvements in the optical and phototransport properties of a-SiC:H films. The issue of alternative carbon feedstocks other than methane (CH4) will be explored. The improved a-SiC:H alloys have resulted in solar cells with high open circuit voltages (V∞ > 1.0 volt) and high fill factors (> 0.7). Further, the a-SiC:H solar cell instability upon prolonged light exposure has been much reduced. Correlation will be made between the properties of bulk undoped a-SiC:H films and the performance of p-i-nsingle junction solar cells using corresponding a-SiC:H thin i-layers.

New low bandgap near-IR conjugated D–A copolymers for BHJ polymer solar cell applications

2016 ◽  
Vol 18 (12) ◽  
pp. 8389-8400 ◽  
Author(s):  
M. L. Keshtov ◽  
S. A. Kuklin ◽  
N. A. Radychev ◽  
A. Y. Nikolaev ◽  
I. E. Ostapov ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Polymer Solar Cell ◽  
Polymer Solar Cells ◽  
Ir Absorption ◽  
Low Bandgap ◽  
Near Ir

Two ultra low bandgap (Eg ≤ 1.2 eV) D–A copolymers, with UV to near-IR absorption, are synthesized and used as donors for polymer solar cells, obtaining PCEs of 7.27% and 6.68%.

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