scholarly journals Polyelectrolyte adsorption onto oppositely charged interfaces: unified approach for plane, cylinder, and sphere

2011 ◽  
Vol 13 (24) ◽  
pp. 11686 ◽  
Author(s):  
A. G. Cherstvy ◽  
R. G. Winkler
Keyword(s):  
Unified Approach ◽  
Polyelectrolyte Adsorption ◽  
Oppositely Charged

Polymer Layer Ordering of Polyaniline Derivatives in Pled Devices: Surface Adsorption and Characterization

1997 ◽  
Vol 488 ◽  
Author(s):  
R. C. Advincula ◽  
W. Knoll ◽  
C. W. Frank ◽  
D. Roitman ◽  
R. Moon ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Deposition Process ◽  
Film Structure ◽  
Hole Injection ◽  
Polyelectrolyte Adsorption ◽  
Light Emitting ◽  
Linear Behavior ◽  
Structure Morphology ◽  
Vis Spectroscopy ◽  
Oppositely Charged

AbstractThe fabrication and characterization of polyaniline (PANI) derivatives deposited on ITO coated glass is investigated as possible hole injection layers for MEH-PPV based polymer light emitting diode (PLED) devices. This involved multilayer ordering by the alternate polyelectrolyte adsorption of polyaniline and sulfonated poyaniline with an oppositely charged polyelectrolyte from solution. A combination of spectroscopic and microscopic techniques was utilized to determine the layer ordering, film structure, morphology, and homogeneity. The deposition process generally showed a linear behavior for all pairs as shown by ellipsometry and UV-vis spectroscopy. However, surface plasmon spectroscopy (SPS) and AFM revealed that thicker films are accompanied by increased surface roughness regardless of concentration. Comparison in performance was made between bare ITO and PANI or SPANI coated devices. Initial investigations of PLED performance showed significant improvements in lifetime and efficiency compared to bare ITO.

A Unified Approach to Study the Thermal Dynamics in Multilongitudinal Mode Semiconductor Lasers

2001 ◽  
Vol 20 (2) ◽  
pp. 159-169 ◽  
Author(s):  
M. Ganesh Madhan ◽  
P. R. Vaya ◽  
N. Gunasekaran
Keyword(s):  
Semiconductor Lasers ◽  
Unified Approach ◽  
Thermal Dynamics
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