Mechanism of Nanostructure Formation on a Surface of CdZnTe Crystal by Laser Irradiation

Journal of Automation, Mobile Robotics & Intelligent Systems 2009
Artūrs Medvids, Aleksandrs Mičko, Volodymyr A. Gnatyuk, Sergiy Levytskyi, Yuriy Naseka

Self-organizing nanometer size structures are observed on the surface of CdZnTe crystal irradiated by strongly absorbed Nd:YAG laser irradiation (LR) at intensity range of 4-12 MW/cm . According to this model the Thermogra- dient effect has the main role in the interaction process of LR and semiconductors. The surface state of the CdZnTe under the influence of Nd:YAG laser irradiation has been studied. A state has been defined by atom force microsco- pe. The influence of LR on the photoluminescence spectra has show that at a threshold intensity of LR I=4MW/cm creation of nanometer size structure begins. A graded band gap structure with optical window was formed at the top of nano-hills.

Keywords
self-organizing structure, Nd:YAG laser, CdZnTe crystal
Hyperlink
http://www.jamris.org/images/ISSUES/ISSUE-2009-04/036%20JAMRIS%20No12%20-%20Mychko.pdf

Medvids, A., Mičko, A., Gnatyuk, V., Levytskyi, S., Naseka, Y. Mechanism of Nanostructure Formation on a Surface of CdZnTe Crystal by Laser Irradiation. Journal of Automation, Mobile Robotics & Intelligent Systems, 2009, Vol.3, No.4, pp.127-129. e-ISSN 2080-2145. ISSN 1897-8649.

Publication language
English (en)