Golenkov O. Physical properties of the semiconductors mercury-cadmium-telluride and photodiode structures on their base for IR mulielement arrays.

The dissertation for the scientific degree of physicist and mathematician candidate in specialty 01.04.01 - physics of the devices, elements and systems. - V. Laskaryov Institute of Semiconductor Physics, National Academy of Sciences of Ukraine, Kyiv, 2008. Researches in dissertation are connected with more precise definition absorption mechanisms in narrow-gap mercury-cadmium-telluride (MCT) and their influence on spectral photo-response characteristics of multielement IR photodiode structures, which is important for accounting of real radiant fluxes registered by photodetector structures. It is shown that nonlinear optics methods can be used for nondestructive composition checking and non-uniformity of MCT samples, and also for determination of non-equilibrium carriers short lifetimes. Basic regularities of optimal IR radiation detection by multielement linear photodiode arrays with readouts are specified for their use in the thermovision technique, and inhomogeneity influence of photoelectric parameters on IR linear arrays characteristics is defined. The influence of accumulation procedure and information transformation in FPA readouts on the noise spectral density and detectivity is defined, which is important for their use in real applications. The methods for such analysis are developed and the means for accounting of influence of electrical and photoelectrical inhomogeneities, the readouts input parameters of input transistors and their influence on FPA functioning as a whole are proposed.