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Journals and Conferences
We report the synthesis and optical characterization of GaN/AlGaN and InGaN/GaN quantum well structures grown on CVD graphene layers. We demonstrate a novel process allowing facile transfer of QW multilayers to other (cheap, flexible) substrates.
The influence of superficial gas velocity and the addition of alcohols with respect to oxygen mass transfer (KLa), and gas hold-up (ɛg) in circulation loop bubble column using three aqueous solutions of 10% concentration methanol, ethanol and isopropanol as liquids were investigated. The column was constructed using a plexiglass tube of inner diameter of… (More)
The effect of gas velocity, liquid-phase properties, solid-particle concentration and the static liquid height on gas hold-up (ɛg) and mass transfer coefficient (KLa) were studied in a three phase internal loop airlift bubble column (ILBC) (the ratio of the draft tube to column diameter equal to 0.5). Air was used as a gas phase. Water and seven aqueous… (More)
We report polarization-sensitive solar-blind metal-semiconductor-metal UV photodetectors based on (112̅0) a-plane AlGaN. The epilayer shows anisotropic optical properties confirmed by polarization-resolved transmission and photocurrent measurements, in good agreement with band structure calculations.