Perylene bisimide as the cathode modifier in organic photovoltaics: the role of aggregation morphology on the interlayer performance

RSC Advances ◽  
2015 ◽  
Vol 5 (50) ◽  
pp. 39973-39977 ◽  
Author(s):  
Wenqiang Zhang ◽  
Shu Zhong ◽  
Li Nian ◽  
Yulan Chen ◽  
Zengqi Xie ◽  
...  
Keyword(s):  
Organic Photovoltaics ◽  
Organic Photovoltaic ◽  
Device Performance ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices ◽  
Perylene Bisimide ◽  
Perylene Bisimides ◽  
Cathode Interlayer

Nanorods and nanoparticles of perylene bisimides (PBI-1) were prepared and applied as cathode interlayer in organic photovoltaic devices. The device performance showed important relation with the morphology of the interlayer.

The role of surface energy control in organic photovoltaics based on solar paints

2019 ◽  
Vol 7 (15) ◽  
pp. 9202-9214 ◽  
Author(s):  
Furqan Almyahi ◽  
Thomas R. Andersen ◽  
Adam Fahy ◽  
Michael Dickinson ◽  
Krishna Feron ◽  
...  
Keyword(s):  
Surface Energy ◽  
Organic Photovoltaics ◽  
Emulsion Stability ◽  
Surface Wettability ◽  
Organic Photovoltaic ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices ◽  
Energy Control

The fabrication of organic photovoltaic devices from aqueous solar nanoparticle (ASNP) inks or solar paints is challenging, driven by the often competing requirements of maintaining emulsion stability whilst simultaneously facilitating surface wettability.

Role of humidity on indium and tin migration in organic photovoltaic devices

2011 ◽  
Vol 13 (10) ◽  
pp. 4381 ◽  
Author(s):  
Anirudh Sharma ◽  
Gunther Andersson ◽  
David A. Lewis
Keyword(s):  
Organic Photovoltaic ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices

Constructing efficient organic photovoltaic devices with a spirobifluorene based water/alcohol-soluble cathode interlayer

2018 ◽  
Vol 42 (11) ◽  
pp. 8960-8967 ◽  
Author(s):  
Yang Miao ◽  
Yincai Xu ◽  
Yuewei Zhang ◽  
Xianju Yan ◽  
Kaiqi Ye ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Polymer Solar Cells ◽  
Organic Photovoltaic ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices ◽  
High Performance Polymer ◽  
Cathode Interlayer ◽  
Water Alcohol

Water/alcohol-soluble 3D-structured spirobifluorene based cathode interlayers (CILs) were synthesized and employed to fabricate high performance polymer solar cells (PSCs).

scholarly journals Melt-processing of small molecule organic photovoltaics via bulk heterojunction compatibilization

2018 ◽  
Vol 20 (10) ◽  
pp. 2218-2224 ◽  
Author(s):  
Aiman Rahmanudin ◽  
Liang Yao ◽  
Xavier A. Jeanbourquin ◽  
Yongpeng Liu ◽  
Arvindh Sekar ◽  
...  
Keyword(s):  
Small Molecule ◽  
Organic Photovoltaics ◽  
Bulk Heterojunction ◽  
Melt Processing ◽  
Organic Photovoltaic ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices

A specially-designed molecular compatibilizer enables bulk-heterojunction organic photovoltaic devices that tolerate melt processing thus reducing the need for toxic solvents.

scholarly journals Free Charge Photogeneration in a Single Component High Photovoltaic Efficiency Organic Semiconductor

2021 ◽  
Author(s):  
Justin Hodgkiss ◽  
Michael Price ◽  
Paul Hume ◽  
Aleksandra Ilina ◽  
Isabella Wagner ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
Organic Photovoltaics ◽  
Photovoltaic Cells ◽  
Single Component ◽  
Dielectric Constants ◽  
Organic Photovoltaic ◽  
Free Charge ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices ◽  
Charge Generation

Abstract Organic photovoltaic cells promise cheap, flexible and scalable solar energy. Whereas light directly generates free charges in silicon photovoltaic cells, bound electron and hole pairs known as excitons are understood to be the primary excitations in organic semiconductors due to their low dielectric constants. These excitons must then be split apart at molecular heterojunctions in order to extract current. Recent record efficiency organic photovoltaics utilise the small molecule, Y6, as a key component in the photon-absorbing blend layer. This molecule and its analogues – unlike previous organic semiconductors – have both low band-gaps and high dielectric constants. Here we show that, in a neat film of Y6, these factors lead to intrinsic free charge generation without the need for a molecular heterojunction to split the exciton. We use a suite of intensity-dependent optical spectroscopy measurements to show that a significant (20-90%) fraction of free charges exist in equilibrium with bound states at light intensity equivalent to 1 sun. Rapid bimolecular charge recombination constrains single component Y6 organic photovoltaic devices to low efficiencies, but this recombination is reduced by the introduction of small quantities of donor polymer. Quantum-chemical calculations reveal charge generation pathways through strong coupling between exciton and CT states, and an intermolecular polarisation pattern that drives exciton dissociation. Our results challenge the understanding of how current record efficiency organic photovoltaics operate, and point towards new future possibilities – offering a molecular picture of intrinsic charge generation as a platform to improve charge yields, and renewing the possibility of efficient single-component organic photovoltaic devices.

Zinc oxide nanorod doped graphene for high efficiency organic photovoltaic devices

RSC Advances ◽  
2016 ◽  
Vol 6 (90) ◽  
pp. 87319-87324 ◽  
Author(s):  
Jeongmo Kim ◽  
Siti Nur Farhana Mohd Nasir ◽  
Mohd Asri Mat Teridi ◽  
Abd. Rashid bin Mohd Yusoff ◽  
Jin Jang
Keyword(s):  
Zinc Oxide ◽  
High Efficiency ◽  
Organic Photovoltaic ◽  
Device Performance ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices ◽  
Electron Hole ◽  
Doped Graphene ◽  
Carrier Separation ◽  
Improved Performance

The use of ZnR–G in an OPV leads to a substantial enhancement in device performance where the improved performance is attributed to the improved charge carrier separation, and prolonged lifetime of the generated electron–hole pairs.

scholarly journals Copper light-catching electrodes for organic photovoltaics

2017 ◽  
Vol 1 (4) ◽  
pp. 859-865 ◽  
Author(s):  
H. Jessica Pereira ◽  
Oliver S. Hutter ◽  
G. Dinesha M. R. Dabera ◽  
Luke A. Rochford ◽  
Ross. A. Hatton
Keyword(s):  
Organic Photovoltaics ◽  
Red Light ◽  
Organic Photovoltaic ◽  
Copper Films ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices ◽  
Photoactive Layer

Plasmon-active optically thin copper films catch red light and transfer the energy to the photoactive layer in organic photovoltaic devices.

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