Laser evaporation and the production of pentacene films

Autor:	Graciela B. Blanchet, C. R. Fincher, Irina Malajovich
Rok vydání:	2003
Předmět:	Materials science Laser ablation business.industry General Physics and Astronomy Laser Evaporation (deposition) Pulsed laser deposition law.invention Organic semiconductor Pentacene chemistry.chemical_compound Vacuum deposition chemistry law Optoelectronics Thin film business
Zdroj:	Journal of Applied Physics. 94:6181-6184
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.1601681
Popis:	The formation of high-quality thin films of pentacene is important in electronic applications. We show here that laser ablation, a technique widely used to deposit a variety of inorganic materials, can also be employed for forming thin oligomeric films. Pentacene films produced by the evaporation of a solid target with a pulsed ultraviolet laser are comparable to those produced via thermal evaporation. The composition of the ablation plume suggests that deposition proceeds by way of a laser-induced evaporation followed by condensation on a nearby surface. Laser deposited films are single-phase material with interlamella spacing characteristic of thin-film structures. The optical properties, field effect mobilities, and surface morphology of laser deposited pentacene films as compared to those produced via thermal evaporation are discussed.
Databáze:	OpenAIRE
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