Influence of Pulsed 266-nm Laser Radiation on the Optical Properties of CdTe and Cd0.9Zn0.1Te in the Region of the Fundamental Optical Transition
Keywords:CdTe, CdZnTe, transmission, reflection, absorption, laser irradiation
Optical research of the transmittance and reflectance spectra of p-CdTe(111) single crystals and Cd0.9Zn0.1Te solid solution specimens in a spectral interval of (0.8÷1.7×10−6 m before and after their laser irradiation at the wavelength Λ = 266 nm to energy doses of 17.2–47.01 mJ/cm2 has been carried out. The structural gettering, i.e. the absorption due to the presence of regions in semiconductors with a defect structure that can actively absorb point defects and bind impurities, was found to be the main mechanism of influence of a pulsed laser radiation on the optical properties of thin near-surface layers in the studied crystals.
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