Abstracts Book - IMRC 2018

• SC4-P125
FABRICATION PROCESS OF NANOCRYSTALS BY SURFACE
EFFECT. THEORETICAL-EXPERIMENTAL APPROACH
Nancy Lizbeth Rodriguez Morales 1 , Jesus Alberto Maldonado Espinosa 1 , Juan Carlos Ortiz
Sanchez 1 , Arturo Hernandez Hernandez 2 , Luis Alberto Hernández Hernández 2 , Pablo A. López
Pérez 2 , Francisco Martínez Farías 2 , Eduardo Rangel Cortes 2 , Emmanuel Vallejo 2 , Miguel
Melendez Lira 3
1 Universidad Autónoma del Estado de Hidalgo, Ingenieria en Nanotecnologia, Escuela Superior
de Apan, Mexico. 2 Universidad Autónoma del Estado de Hidalgo, Energetic Systems and
Advanced Materials, Escuela Superior de Apan, Mexico. 3 Centro de Investigación y de Estudios
Avanzados del IPN - CINVESTAV, Departamento de Fisica, Mexico.
The crystallization process was examined for semiconductors thin films on oxide
thin films grown by RF sputtering. The theoretical modeling of the surfaces was
done by Brownian surfaces, relating the Hurts exponent with deposit
atmosphere. Three-dimensional crystalline islands were formed through
crystallization and agglomeration. The mechanism of nanocrystals formation
was discussed on the basis of thermodynamics. In studying the crystallization of
nanocrystals, the influence of the film-substrate interfacial energy and surfaces
defects should be taken into consideration. It was found that the thickness of
the deposited amorphous films is an essential factor in determining the
crystallization behavior and in controlling crystal size. This idea can easily be
implemented in the manufacture of multilayer applications up- and down
convertion for solar cells and coatings.
Keywords: Thin films, Nanocrystals, Surfaces
Presenting authors email: estrellitad.styles@gmail.com