Publications by authors named "A Matulionis"

Ultrafast electronic and phononic processes are investigated in voltage-biased GaN-based two-dimensional channels of interest for heterostructure field-effect transistors. The accumulation of non-equilibrium longitudinal optical phonons (hot phonons) is treated for AlGaN/GaN, AlGaN/AlN/GaN, AlGaN/GaN/AlN/GaN, and AlInN/AlN/GaN structures in terms of the hot-phonon temperature and hot-phonon lifetime. The hot-phonon effect on hot-electron energy relaxation and hot-phonon number relaxation is extracted from an experimental investigation of hot-electron fluctuations and power dissipation.

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Single and double photoinjections prove to be a useful tool for investigations of recombination mechanisms. The photodischarge of selenium electrophotographic layers due to double and single photo-injections has been investigated. Experimental results show that every photoproduced pair of free carriers either recombines independently of the other free carriers or takes part in the photodischarge without subsequent recombination.

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