Broadband-Solubility Diketopyrrolopyrrole Derivative with Both Polar Cyano and Nonpolar Alkyl Groups for Stable Organic Photosensors and Diffusion-Processed Organic Solar Cells

2016 ◽  
Vol 1 (8) ◽  
pp. 1716-1722 ◽  
Author(s):  
Hyena Lee ◽  
Hyemi Han ◽  
Jaehoon Jeong ◽  
Hwajeong Kim ◽  
Dong-Ik Song ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Alkyl Groups ◽  
And Diffusion

Ti-Oxo Clusters with Peripheral Alkyl Groups as Cathode Interlayers for Efficient Organic Solar Cells

2021 ◽  
Author(s):  
Xing Chen ◽  
Yingzi Han ◽  
Jie Fang ◽  
Zhou Zhang ◽  
Yuefeng Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Alkyl Groups

Exciton Generation and Diffusion in Multilayered Organic Solar Cells Designed by Layer-by-Layer Assembly of Poly(p-phenylenevinylene)

2010 ◽  
Vol 2 (1) ◽  
pp. 236-245 ◽  
Author(s):  
Kohji Masuda ◽  
Yoshifumi Ikeda ◽  
Michihiro Ogawa ◽  
Hiroaki Benten ◽  
Hideo Ohkita ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Layer By Layer ◽  
Layer By Layer Assembly ◽  
And Diffusion ◽  
Layer Assembly

scholarly journals Microcavity effects on the generation, fluorescence, and diffusion of excitons in organic solar cells

2013 ◽  
Vol 21 (S3) ◽  
pp. A336 ◽  
Author(s):  
G. Kozyreff ◽  
D. C. Urbanek ◽  
L.T. Vuong ◽  
O. Nieto Silleras ◽  
J. Martorell
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
And Diffusion

Delayed fluorescence material-assisted high performance ternary organic solar cells realized by prolonged exciton lifetime and diffusion length

2020 ◽  
Vol 8 (48) ◽  
pp. 17429-17439
Author(s):  
Luye Cao ◽  
Xiaoyang Du ◽  
Hui Lin ◽  
Caijun Zheng ◽  
Zhenhua Chen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
High Performance ◽  
Diffusion Length ◽  
Delayed Fluorescence ◽  
Exciton Lifetime ◽  
Fluorescence Material ◽  
And Diffusion

The addition of DF materials into ternary OSCs offers possibilities for prolonging the exciton lifetime and diffusion length.

scholarly journals Efficient Solar Cells Based on a Polymer Donor with β-Branching in Trialkylsilyl Side Chains

2021 ◽  
Vol 03 (02) ◽  
pp. 134-140
Author(s):  
Haijun Bin ◽  
Martijn M. Wienk ◽  
René A. J. Janssen
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Short Circuit ◽  
Energy Levels ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Side Chains ◽  
Photovoltaic Properties ◽  
Alkyl Groups ◽  
High Efficient

Side-chain engineering is an important strategy in designing novel polymer semiconductor materials for high-efficient organic solar cells. The use of trialkylsilyl side chains can improve the photovoltaic efficiency by decreasing the energy of the HOMO of the polymer and improving its crystallinity and hole mobility. Compared to simple linear derivatives, α-branching in the alkyl groups of trialkylsilyl side chains causes strong aggregation and excessive phase separation in the photoactive layer, leading to poor device performance. β-Branching of the alkyl groups has not yet been used in trialkylsilyl side chains. Herein, we describe a new polymer (J77) with triisobutylsilyl side chains to investigate the effect of β-branching on the molecular aggregation, optical properties, energy levels, and photovoltaic properties. We find that compared to α-branching, β-branching of alkyl groups in trialkylsilyl side chains significantly reduces aggregation. This enables J77 to form blend morphologies in films that provide high-efficient solar cells in combination with different non-fullerene acceptors. Moreover β-branching of the alkyl groups in trialkylsilyl side chains lowers the HOMO energy level of J77 and increases the open-circuit voltage of J77-based solar cells without sacrificing short-circuit current density or fill factor.

An Efficient Imine Photocyclization as an Alternative to the Pictet-Spengler Reaction for the Synthesis of AzaBenzannulated Perylenediimide Dyes

2020 ◽  
Author(s):  
Antoine Goujon ◽  
Lou Rocard ◽  
Thomas Cauchy ◽  
Piétrick Hudhomme
Keyword(s):  
Solar Cells ◽  
Visible Light ◽  
Organic Solar Cells ◽  
Reaction Sequence ◽  
Large Scope ◽  
High Yields

AzaBenzannulated PDI (AzaBPDI) dyes were synthesized in high yields via a new reaction sequence involving an imine condensation followed by visible light-induced photocyclization. The large scope and efficiency of this alternative to the Pictet-Spengler reaction is demonstrated, and allows the easy preparation of dimeric AzaBPDI as potential non-fullerene acceptors for organic solar cells.

Boron-Nitrogen Doped Dihydroindeno[1,2-b]fluorene Derivatives as Acceptors in Organic Solar Cells

2019 ◽  
Author(s):  
Matthew Morgan ◽  
Maryam Nazari ◽  
Thomas Pickl ◽  
J. Mikko Rautiainen ◽  
Heikki M. Tuononen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Organic Solar Cells ◽  
Organic Solar Cell ◽  
Broad Absorption ◽  
Nitrogen Doped ◽  
Large Depth ◽  
End Products ◽  
Boron Nitrogen ◽  
The Way

The electrophilic borylation of 2,5-diarylpyrazines results in the formation of boron-nitrogen doped dihydroindeno[1,2-<i>b</i>]fluorene which can be synthesized via mildly air-sensitive techniques and the end products handled readily under atmosphereic conditions. Through transmetallation via diarylzinc reagents a series of derivatives were sythesized which show broad absorption profiles that highlight the versatility of this backbone to be used in organic solar cell devices. These compounds can be synthesized in large yields, in alow number of steps and functionalized at many stages along the way providing a large depth of possibilities. Exploratory device paramaters were studied and show PCE of 2%.

High Throughput Screening of Highly Efficient Non-fullerene Acceptor based Organic Solar Cells Assisted by a Multi-Dataset Scientific Robot

2019 ◽  
Author(s):  
Enrique Pascual-San-José ◽  
Xabier Rodríguez-Martínez ◽  
Fei Zhuping ◽  
Martin Heeney ◽  
Roger Guimerà-Manrique ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Throughput ◽  
Organic Solar Cells ◽  
High Throughput Screening ◽  
Highly Efficient
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