"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Spray deposition of thin organic films

M. ALEKSANDROVA1,* , G. DOBRIKOV1, I. ZHIVKOV2, B. KYOSEV3, T. DOBREVA4

Affiliation

  1. Technical University of Sofia, Department “Microelectronics”, 8 Kliment Ohridsky Str., 1000 Sofia, Bulgaria
  2. Central Laboratory of Photoprocesses, Bulgarian Academy of Sciences, bl. 109 Acad. G. Bonchev Str., 1113 Sofia, Bulgaria
  3. Herbamedica Ltd., Ivan Susanin Str. 5, Sofia, Bulgaria
  4. Central laboratory of physico-chemical mechanics, Bulgarian Academy of Sciences, bl.1 Akad. Georgi Bonchev Str., 1113 Sofia, Bulgaria

Abstract

Thin organic films were deposited by a low temperature spray technique (substrate temperature 40-130 o C). Poly(N-vinylcarbazole) and poly[2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylene vinylene] solutions, in chloroform and a chloroform-toluene mixture with concentrations of 0.004-0.1 weight percentages were prepared. The films obtained were investigated by optical micrography, SEM and UV-VIS spectroscopy. By varying the deposition conditions (e.g. solution concentration, substrate temperature, type of the solvent, air pressure) the film structure and morphology could be changed dramatically – from separate aggregates, to polymer networks, to films with pinholes of different diameters, and to stacked disks and grains..

Keywords

Thin films, Organic materials, Spray deposition, Layer morphology.

Submitted at: Nov. 5, 2008
Accepted at: Oct. 3, 2009

Citation

M. ALEKSANDROVA, G. DOBRIKOV, I. ZHIVKOV, B. KYOSEV, T. DOBREVA, Spray deposition of thin organic films, Journal of Optoelectronics and Advanced Materials Vol. 11, Iss. 10, pp. 1400-1403 (2009)