scholarly journals Importance of Nucleation during Morphology Evolution of the Blade-Cast PffBT4T-2OD-Based Organic Solar Cells

2018 ◽  
Vol 51 (17) ◽  
pp. 6682-6691 ◽  
Author(s):  
Zhaozhao Bi ◽  
Hafiz Bilal Naveed ◽  
Yimin Mao ◽  
Hongping Yan ◽  
Wei Ma
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Morphology Evolution

Ternary organic solar cells: compatibility controls for morphology evolution of active layers

2017 ◽  
Vol 5 (41) ◽  
pp. 10801-10812 ◽  
Author(s):  
Qingyun Ai ◽  
Weihua Zhou ◽  
Lin Zhang ◽  
Liqiang Huang ◽  
Jingping Yin ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Morphology Evolution ◽  
Active Layers

Compatibility between components described by Flory–Huggins parameters controls morphology evolution in ternary organic solar cells.

scholarly journals Fine Optimization of Morphology Evolution Kinetics with Binary Additives for Efficient Non‐Fullerene Organic Solar Cells

2019 ◽  
Vol 6 (6) ◽  
pp. 1801560 ◽  
Author(s):  
Jianya Chen ◽  
Zhaozhao Bi ◽  
Xianbin Xu ◽  
Qianqian Zhang ◽  
Shengchun Yang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Morphology Evolution

scholarly journals Modeling the morphology evolution of organic solar cells

2019 ◽  
Vol 1 (1) ◽  
pp. 18-27
Author(s):  
Kai Bergermann
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Chemical Potential ◽  
Phase Field Model ◽  
Linear Partial Differential Equation ◽  
Production Costs ◽  
Morphology Evolution ◽  
Major Drawback ◽  
Promising Alternative ◽  
Potential Term

Organic solar cells present a promising alternative for the generation of solar energy at lower material and production costs compared to widely used silicon-based solar cells. The major drawback of organic solar cells currently is a lower rate of energy conversion. Thus many research projects aim to improve the achievable efficiency. In this work a phase field model is used to mathematically describe the morphology evolution of the active layer composed of polymer as electron-donor and fullerene as electron-acceptor. The derivation of a chemical potential term and a surface energy term for the polymer-fullerene solution using the Flory-Huggins theory forms the basis to employ the Cahn-Hilliard equation. After including several specifics of the application in this non-linear partial differential equation of fourth order, an implementation of the model using the FEM solver software FEniCS provides some simulation results that qualitatively match results from the literature.

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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