Laser Induced Nanostructure Formation on a Surface of CdZnTe Crystal

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For the first time, a new PL band at 1.8718 eV is observed after irradiation of Cd1-xZnxTe (x = 0.1) crystal by Nd:YAG laser at intensity 12.0 MW/cm2. The origin of this PL band we connect with formation of strongly enriched layer by Zn atoms at the irradiated surface of the sample due to a themogradient effect. Self-organizing structures of nanometer size are observed on the surface of a CdZnTe crystal (x = 0.1) irradiated by strongly absorbed Nd:YAG laser radiation at intensities 4.0-12.0 MW/cm2. The effect of exciton quantum confinement manifested by a shift to higher energies of the A0,X exciton line in the photoluminescent spectrum is present in structures of 10–15 nm in diameter at the top of nanohills. A graded band gap structure with optical window is formed on the top of nanohills.

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Edited by:

Andreas Öchsner, Irina V. Belova and Graeme E. Murch

Pages:

107-112

DOI:

10.4028/www.scientific.net/JNanoR.11.107

Citation:

A. Medvid et al., "Laser Induced Nanostructure Formation on a Surface of CdZnTe Crystal ", Journal of Nano Research, Vol. 11, pp. 107-112, 2010

Online since:

May 2010

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$35.00

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