Exciton quantum confinement in nanocones formed on a surface of CdZnTe solid solution by laser radiation
1 Riga Technical University, Azenes Street 14, Riga, 1048, Latvia
2 Institute of Semiconductor Physics, NAS of Ukraine, Pr. Nauki 28, Kyiv, 03028, Ukraine
Nanoscale Research Letters 2012, 7:514 doi:10.1186/1556-276X-7-514Published: 20 September 2012
The investigation of surface morphology using atomic force microscope has shown self-organizing of the nanocones on the surface of CdZnTe crystal after irradiation by strongly absorbed Nd:YAG laser irradiation at an intensity of 12.0 MW/cm2. The formation of nanocones is explained by the presence of a thermogradient effect in the semiconductor. The appearance of a new exciton band has been observed after irradiation by the laser which is explained by the exciton quantum confinement effect in nanocones.