lytvinenko O. Formation and investigation of 2D photonic structures on the basis of macroporous silicon.

The dissertation is devoted to formation of 2D photonic structures based on macroporous silicon by the electrochemical method for transformation of the electromagnetic radiation spectrum and development of light emitting structures and thermal receivers. Macroporous silicon structures with the macropore diameter 1-15 micron and depth up to 250 micron are made. The orange photoluminescence of intensity 10 µW/cm2 is registered on macroporous silicon structures with nanocrystals. There were measured the photonic absorption band and the wide band of the absorption with the effective absorption coefficient 300-500 cm-1 connected with formation of directed and decay optical modes. Bolometerical effect parameters are determined: temperature factor of resistance 1-4%/К; the noise level (2-5)10-9 V·Hz-1/2 for frequencies above 10 Hz that is on the order lower than noise level in amorphous and polycrystalline silicon and is equaled to modern microbolometer characteristics.