scholarly journals High Voc Fullerene-Free Organic Photovoltaics Composed of PTB7 and Axially-Substituted Silicon Phthalocyanines

2021 ◽  
Author(s):  
Mario Vebber ◽  
Nicole A. Rice ◽  
Jaclyn L. Brusso ◽  
Benoît H. Lessard
Keyword(s):  
Organic Semiconductors ◽  
High Voltage ◽  
Organic Photovoltaics ◽  
Solvent System ◽  
Rechargeable Batteries ◽  
Open Circuit ◽  
The Past ◽  
Silicon Phthalocyanines ◽  
Commercial Applications ◽  
Open Circuit Voltages

Abstract While the efficiency of organic photovoltaics (OPV) has improved drastically in the past decade, such devices rely on exorbitantly expensive materials that are unfeasible for commercial applications. Moreover, examples of high voltage single-junction devices, which are necessary for several applications, particularly low-power electronics and rechargeable batteries, are lacking in literature. Alternatively, silicon phthalocyanines (R2-SiPc) are inexpensive, industrially scalable organic semiconductors, having a minimal synthetic complexity (SC) index, and are capable of producing high voltages when used as acceptors in OPVs. In the present work, we have developed high voltage OPVs composed of Poly({4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b′]dithiophene-2,6-diyl}{3-fluoro-2-[(2-ethylhexyl)carbonyl] thieno [3,4 b]thiophenediyl}) (PTB7) and an SiPc derivative ((3BS)2-SiPc). Interestingly, while changes to the solvent system had a strong effect on performance, the PTB7:3BS-SiPc active layer were robust to spin speed, annealing and components ratio. This invariance is a desirable characteristic for industrial production. All PTB7:(3BS)2-SiPc devices produced high open circuit voltages between 1.0 and 1.07 V, while maintaining 80% of the overall efficiency, when compared to their fullerene-based counterpart.

scholarly journals Variance-resistant PTB7 and axially-substituted silicon phthalocyanines as active materials for high-Voc organic photovoltaics

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Mario C. Vebber ◽  
Nicole A. Rice ◽  
Jaclyn L. Brusso ◽  
Benoît H. Lessard
Keyword(s):  
Organic Semiconductors ◽  
High Voltage ◽  
Organic Photovoltaics ◽  
Solvent System ◽  
Rechargeable Batteries ◽  
Open Circuit ◽  
Active Materials ◽  
Silicon Phthalocyanines ◽  
Commercial Applications ◽  
Open Circuit Voltages

AbstractWhile the efficiency of organic photovoltaics (OPVs) has improved drastically in the past decade, such devices rely on exorbitantly expensive materials that are unfeasible for commercial applications. Moreover, examples of high voltage single-junction devices, which are necessary for several applications, particularly low-power electronics and rechargeable batteries, are lacking in literature. Alternatively, silicon phthalocyanines (R2-SiPc) are inexpensive, industrially scalable organic semiconductors, having a minimal synthetic complexity (SC) index, and are capable of producing high voltages when used as acceptors in OPVs. In the present work, we have developed high voltage OPVs composed of poly({4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b′]dithiophene-2,6-diyl}{3-fluoro-2-[(2-ethylhexyl)carbonyl] thieno [3,4 b]thiophenediyl}) (PTB7) and an SiPc derivative ((3BS)2-SiPc). While changes to the solvent system had a strong effect on performance, interestingly, the PTB7:(3BS)2-SiPc active layer were robust to spin speed, annealing and components ratio. This invariance is a desirable characteristic for industrial production. All PTB7:(3BS)2-SiPc devices produced high open circuit voltages between 1.0 and 1.07 V, while maintaining 80% of the overall efficiency, when compared to their fullerene-based counterpart.

Ternary organic solar cells: using molecular donor or acceptor third components to increase open circuit voltage

2019 ◽  
Vol 43 (26) ◽  
pp. 10442-10448 ◽  
Author(s):  
Sergey V. Dayneko ◽  
Arthur D. Hendsbee ◽  
Jonathan R. Cann ◽  
Clément Cabanetos ◽  
Gregory C. Welch
Keyword(s):  
Solar Cells ◽  
Organic Photovoltaics ◽  
Organic Solar Cells ◽  
Open Circuit Voltage ◽  
Power Conversion ◽  
Open Circuit ◽  
Molecular Semiconductors ◽  
Conversion Efficiencies ◽  
Open Circuit Voltages

The addition of donor or acceptor type molecular semiconductors to PBDB-T:PC60BM based organic photovoltaics leads to increases in open circuit-voltages and overall power conversion efficiencies.

scholarly journals Coupling Alkaline Conversion Zn Anode with Acidic Proton-insertion MoO3 Cathode for High-voltage Aqueous Rechargeable Hybrid Battery

2020 ◽  
Author(s):  
Pingwei Cai ◽  
Yichun Ding ◽  
Yangjie Liu ◽  
Zhenhai Wen
Keyword(s):  
High Voltage ◽  
High Capacity ◽  
Rate Capability ◽  
Rechargeable Batteries ◽  
Open Circuit ◽  
Charge Carriers ◽  
High Rate ◽  
Grand Challenge ◽  
Energy Devices ◽  
Zn Anode

Abstract Hydrogen ions (H+) and hydroxide ions (OH-) are regarded as ideal charge carriers for rechargeable batteries thanks to their small size, high ion mobility, low cost, and wide flexibility compared to the metal ions. However, the implementation of storage of both H+ and OH- in one electrochemical energy device face grand challenge due to incompatibility between H+ and OH-. Herein, we report an alkali-acid Zn-MoO3 hybrid battery that employ H+ and OH- as charge carriers of cathode and anode, respectively, in which the insertion/deinsertion of H+ take place on layer structured MoO3 cathode in acid while OH- are involved in alkaline conversion Zn anode, which offers a promising route to well address the incompatible issues of H+ and OH- in one electrolyte. The as-built hybrid battery can deliver a high open-circuit voltage of 1.85 V, a high rate capability, a high capacity of 158 mAh g-1 at a current density of 5 A g-1, and excellent capacity retention of above 90% over 200 cycles. This work sheds light on the development of aqueous energy devices with high voltage and energy density through materials engineering and device optimization.

Coronene derivatives for transparent organic photovoltaics through inverse materials design

2021 ◽  
Author(s):  
Jeni C. Sorli ◽  
Pascal Friederich ◽  
Benjamin Sanchez-Lengeling ◽  
Nicholas C. Davy ◽  
Guy Olivier Ngongang Ndjawa ◽  
...  
Keyword(s):  
Computational Methods ◽  
Organic Photovoltaics ◽  
Materials Design ◽  
Open Circuit ◽  
Open Circuit Voltages

To accelerate materials discovery, computational methods such as inverse materials design, are used to design UV-absorbing coronene based derivatives that, following synthesis achieve high open-circuit voltages and visible transparencies.

scholarly journals Benzodithiophene-based wide-bandgap small-molecule donors for organic photovoltaics with large open-circuit voltages

2021 ◽  
Vol 88 ◽  
pp. 105996
Author(s):  
Eunhee Lee ◽  
Duyen K. Tran ◽  
Jihun Park ◽  
Wonyoung Ko ◽  
Samson A. Jenekhe ◽  
...  
Keyword(s):  
Small Molecule ◽  
Organic Photovoltaics ◽  
Wide Bandgap ◽  
Open Circuit ◽  
Open Circuit Voltages

Fused Ambipolar Aza-isoindigos with NIR absorption

2021 ◽  
Author(s):  
Liping Yao ◽  
Danlei Zhu ◽  
Hailiang Liao ◽  
Sheik Haseena ◽  
Mahesh kumar Ravva ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
High Performance ◽  
Low Cost ◽  
Light Weight ◽  
The Past ◽  
Pi Conjugated ◽  
Nir Absorption ◽  
Conjugated Organic Semiconductors

Due to their advantages of low-cost, light-weight, and mechanical flexibility, much attention has been focused on pi-conjugated organic semiconductors. In the past decade, although many materials with high performance has...

Recent progress in ‘water-in-salt’ and ‘water-in-salt’-hybrid-electrolyte-based high voltage rechargeable batteries

2021 ◽  
Author(s):  
Pranav Kulkarni ◽  
Debasis Ghosh ◽  
R. Geetha Balakrishna
Keyword(s):  
High Voltage ◽  
Recent Progress ◽  
Rechargeable Batteries ◽  
Aqueous Batteries

This review presents recent advancements in high-voltage rechargeable aqueous batteries employing water-in-salt and modified water-in-salt electrolytes.

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