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Physical properties of InP epitaxial layers prepared with dysprosium admixture
Grym, Jan ; Procházková, Olga
Physical properties of commonly prepared InP layers grown by LPE technique and those grown from Dy treated melt are compared. The layers were examined by SEM, low temperature PL spectroscopy, C-V measurements and temperature dependent Hall effect. Structural, electrical and optical properties of InP layers exhibit a significant dependence on the presence of Dy and its concentration in the melt. When increasing the concentration of Dy the reversal of electrical conductivity occurs.
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Photodynamic therapy. Instrumental optics
Votruba, J. ; Stádník, Bohumil ; Javorský, Stanislav
Photodynamic therapy of cancerous tumorous of various human organs uses both coherent and noncoherent light sources for the treatment. However, noncoherent ones are prefered due to higher treatment efficiency, simpler and reliable operation and lower financial costs. Main purpose of this report is to give overview of basic optical methods and instruments used in the photodynamic therapy.
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