A nanoscale study of charge extraction in organic solar cells: the impact of interfacial molecular configurations

Nanoscale ◽  
2015 ◽  
Vol 7 (1) ◽  
pp. 104-112 ◽  
Author(s):  
Fu-Ching Tang ◽  
Fu-Chiao Wu ◽  
Chia-Te Yen ◽  
Jay Chang ◽  
Wei-Yang Chou ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Organic Solar Cells ◽  
Molecular Geometry ◽  
Experimental Measurements ◽  
Current Voltage ◽  
Current Voltage Characteristics ◽  
The Impact ◽  
Theoretical Considerations ◽  
Interfacial Charge

We highlight the importance of interfacial molecular geometry in optimizing organic solar cells through theoretical considerations of interfacial charge transfer and experimental measurements of nanoscale current–voltage characteristics.

Solar Cell Manufacturing Method with the Structure of the Bulk Heterojunction Based on Organic Semiconductors with a Direct Architecture

2016 ◽  
Vol 845 ◽  
pp. 224-227 ◽  
Author(s):  
Danila Saranin ◽  
Marina Orlova ◽  
Sergey Didenko ◽  
Oleg Rabinovich ◽  
Andrey Kryukov
Keyword(s):  
Solar Cells ◽  
Organic Semiconductors ◽  
Organic Solar Cells ◽  
Fill Factor ◽  
Research Output ◽  
Bulk Heterojunction ◽  
Organic Basis ◽  
Manufacturing Method ◽  
Current Voltage ◽  
Current Voltage Characteristics

This article presents the results of research output voltage characteristics of solar cells on an organic basis with the use of P3HT: PCBM system. There were produced organic solar cells in a coating in air, current-voltage characteristics were measured. It was determined the characteristic influence of a substrate cleaning and annealing temperature of layers applied on fill factor and conversion efficiency.

scholarly journals Long-lived and disorder-free charge transfer states enable endothermic charge separation in efficient non-fullerene organic solar cells

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Ture F. Hinrichsen ◽  
Christopher C. S. Chan ◽  
Chao Ma ◽  
David Paleček ◽  
Alexander Gillett ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Organic Solar Cells ◽  
Charge Separation ◽  
Free Charge ◽  
Charge Generation ◽  
Time Resolved ◽  
Thermodynamic Conditions ◽  
Donor Acceptor ◽  
Interfacial Charge

Abstract Organic solar cells based on non-fullerene acceptors can show high charge generation yields despite near-zero donor–acceptor energy offsets to drive charge separation and overcome the mutual Coulomb attraction between electron and hole. Here, we use time-resolved optical spectroscopy to show that free charges in these systems are generated by thermally activated dissociation of interfacial charge-transfer states that occurs over hundreds of picoseconds at room temperature, three orders of magnitude slower than comparable fullerene-based systems. Upon free electron–hole encounters at later times, both charge-transfer states and emissive excitons are regenerated, thus setting up an equilibrium between excitons, charge-transfer states and free charges. Our results suggest that the formation of long-lived and disorder-free charge-transfer states in these systems enables them to operate closely to quasi-thermodynamic conditions with no requirement for energy offsets to drive interfacial charge separation and achieve suppressed non-radiative recombination.

scholarly journals Identification of different origins for s-shaped current voltage characteristics in planar heterojunction organic solar cells

2012 ◽  
Vol 111 (5) ◽  
pp. 054509 ◽  
Author(s):  
Julia Wagner ◽  
Mark Gruber ◽  
Andreas Wilke ◽  
Yuya Tanaka ◽  
Katharina Topczak ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Current Voltage ◽  
Current Voltage Characteristics ◽  
Planar Heterojunction ◽  
Different Origins

Device characterization and optimization of small molecule organic solar cells assisted by modelling simulation of the current–voltage characteristics

2015 ◽  
Vol 17 (29) ◽  
pp. 19261-19267 ◽  
Author(s):  
Yi Zuo ◽  
Xiangjian Wan ◽  
Guankui Long ◽  
Bin Kan ◽  
Wang Ni ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
Electrical Model ◽  
Device Characterization ◽  
Solution Processed ◽  
Current Voltage ◽  
Current Voltage Characteristics ◽  
Modelling Simulation

A new equivalent electrical model was built in terms of semiconductor theory to simulate the current–voltage characteristics and reveal these current losses in solution processed small molecule based devices.

scholarly journals Charge-Transfer States in Organic Solar Cells: Understanding the Impact of Polarization, Delocalization, and Disorder

2017 ◽  
Vol 9 (21) ◽  
pp. 18095-18102 ◽  
Author(s):  
Zilong Zheng ◽  
Naga Rajesh Tummala ◽  
Yao-Tsung Fu ◽  
Veaceslav Coropceanu ◽  
Jean-Luc Brédas
Keyword(s):  
Solar Cells ◽  
Charge Transfer ◽  
Organic Solar Cells ◽  
The Impact
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