Room-Temperature Phase Demixing in Bulk Heterojunction Layers of Solution-Processed Organic Photodetectors: the Effect of Active Layer Ageing on the Device Electro-optical Properties

2011 ◽  
Vol 21 (8) ◽  
pp. 1355-1363 ◽  
Author(s):  
Panagiotis E. Keivanidis ◽  
Frédéric Laquai ◽  
Ian A. Howard ◽  
Richard H. Friend
Keyword(s):  
Optical Properties ◽  
Active Layer ◽  
Room Temperature ◽  
Bulk Heterojunction ◽  
Temperature Phase ◽  
Solution Processed ◽  
Organic Photodetectors

Optical Properties of Room-temperature Solution-processed ZnO Films

2011 ◽  
Vol 58 (5(1)) ◽  
pp. 1316-1319
Author(s):  
Dong Jae Lee ◽  
Jin Won Park ◽  
Yun Kyung Seo ◽  
Yun Sang Lee
Keyword(s):  
Optical Properties ◽  
Room Temperature ◽  
Zno Films ◽  
Solution Processed ◽  
Temperature Solution

Solution-processable all-small molecular bulk heterojunction films for stable organic photodetectors: near UV and visible light sensing

2015 ◽  
Vol 3 (7) ◽  
pp. 1513-1520 ◽  
Author(s):  
Hyena Lee ◽  
Sungho Nam ◽  
Hyunju Kwon ◽  
Sooyong Lee ◽  
Jungnam Kim ◽  
...  
Keyword(s):  
Visible Light ◽  
High Intensity ◽  
Uv Light ◽  
Bulk Heterojunction ◽  
Solution Processed ◽  
Light Sensing ◽  
Solution Processable ◽  
Organic Photodetectors ◽  
Sun Light

Organic photodetectors with solution-processed all small-molecular bulk heterojunction layers detect near UV light and are stable under high-intensity lights stronger than sun light.

scholarly journals Near infrared organic photodetectors based on enhanced charge transfer state absorption by photonic architectures

2020 ◽  
Vol 8 (28) ◽  
pp. 9688-9696
Author(s):  
Martí Gibert-Roca ◽  
Pau Molet ◽  
Agustín Mihi ◽  
Mariano Campoy-Quiles
Keyword(s):  
Charge Transfer ◽  
Photonic Crystal ◽  
Band Gap ◽  
Active Layer ◽  
Near Infrared ◽  
Lattice Parameter ◽  
Charge Transfer State ◽  
Solution Processed ◽  
Organic Photodetectors ◽  
Transfer State

Solution processed organic photodetectors with a nanostructured active layer in the shape of a photonic crystal exhibit an improved NIR response, below the band gap of the active layer materials, that can be tuned by varying the lattice parameter. 

Solution-Processed Silver Electrode for Inverted Organic Solar Cell Based on Easily Deposited Hole Transporting Layer onto Hydrophobic Active Layer

2020 ◽  
Vol 29 ◽  
pp. 37-50
Author(s):  
Yasser A.M. Ismail ◽  
Essam Ramadan Shaaban ◽  
Ahmed Ali Showahy ◽  
Sayed Mahmoud ◽  
Abdelrahman A.M. Ismail
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Active Layer ◽  
Organic Solar Cells ◽  
Room Temperature ◽  
Solution Processed ◽  
Silver Paste ◽  
Ag Electrode ◽  
Roll To Roll ◽  
Hole Transporting

For reducing the production costs, decreasing the fabrication time and for practical applications used in roll-to-roll process for inverted organic solar cells (IOSCs), silver (Ag) back-electrode have been deposited from silver paste solution at room temperature using simple, cheap and easy manual spray method, with completely avoiding the use of thermal evaporation system for solar cell preparation. In addition, a layer of poly (3,4-ethylenedioxythiophene):poly (styrenesulfonate) (PEDOT:PSS) as a hole transporting layer have been deposited from an aqueous solution onto hydrophobic active layer without any chemical additives or additional treatments. For optimizing the Ag film, to be used as a back electrode in the IOSCs, series resistance of the indium tin oxide (ITO)/PEDOT:PSS/Ag device was measured at different compositions of silver paste dispersed in ethanol, different annealing temperatures and different silver paste amounts sprayed onto PEDOT:PSS layer. The dilution process of silver paste with ethanol is practical to reduce its commercial cost and to decrease its viscosity to be easily sprayed using spray gun for application in large scale production with avoiding solidification and fast curing at room temperature. Using the present method, the Ag electrode has been efficiently sprayed on the top of organic solar cells with low electrical resistance, large thickness and good hardness against crashes. We found that, the high thickness of both PEDOT:PSS layer and Ag electrode deposited on the top of solar cell active layer prevent and suppress oxygen penetration towards P3HT:PCBM active layer. Therefore, the optimized solar cell revealed good air stability, compared to their counterparts in other literatures, under ambient atmosphere with approximately 86% retention of their original conversion efficiency after 154 days. Our results indicate that the solution-processed Ag back-electrode using easy method has a potential to be used in roll-to-roll processed organic solar cells and other optoelectronic applications.

New solution processed bulk-heterojunction organic solar cells based on a triazine-bridged porphyrin dyad as electron donor

RSC Advances ◽  
2014 ◽  
Vol 4 (92) ◽  
pp. 50819-50827 ◽  
Author(s):  
Ganesh D. Sharma ◽  
Galateia E. Zervaki ◽  
Panagiotis Angaridis ◽  
Athanassios G. Coutsolelos
Keyword(s):  
Solar Cells ◽  
Active Layer ◽  
Electron Donor ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Solution Processed ◽  
Zinc Porphyrin ◽  
Donor And Acceptor ◽  
Electron Donor And Acceptor ◽  
Covalently Linked

An unsymmetrical porphyrin dyad (ZnP)-[triazine-Npip]-(ZnPCOOH) consisting of two zinc-porphyrin units covalently linked to a peridine-containing triazine group has been used with PC71BM as electron donor and acceptor, respectively, for the active layer of solution-processed BHJ organic solar cells.

The Dependence of Device Dark Current on the Active-Layer Morphology of Solution-Processed Organic Photodetectors

2010 ◽  
Vol 20 (22) ◽  
pp. 3895-3903 ◽  
Author(s):  
Panagiotis E. Keivanidis ◽  
Peter K. H. Ho ◽  
Richard H. Friend ◽  
Neil C. Greenham
Keyword(s):  
Active Layer ◽  
Dark Current ◽  
Solution Processed ◽  
Organic Photodetectors
Sign in / Sign up

Export Citation Format

Share Document