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GaSb-based type-I quantum wells cascade diode lasers with nearly diffraction limited output beam were fabricated using methane–hydrogen dry etching plasma process. Rapid thermal annealing was shown to be a necessary step to reverse the effect of hydrogen plasma on conductivity of AlGaAsSb cladding alloy. Annealed two-step narrow ridge lasers confined both optical field and current in lateral direction...
Different from conventional unipolar type 1D1R RRAM devices, in this paper, a bipolar type 1D1R RRAM device structure is firstly proposed and successfully demonstrated by the combined TiOx-based Schottky diode and Cu/HfO2/Pt bipolar RRAM cell. Reliable and uniform self-compliance resistive switching characteristics are obtained by imposing current compliance using the reverse bias current of the TiO...
Scandate cathode exhibits the highest emission property among all the thermionic cathodes. Scanadia Doped Dispenser cathode (SDD cathode) is one of the promising cathodes due to its good emission property and reproducibility. The impacts of local electric field enhancement on emission capability of cathode have be considered by applying the actions of Schottky effect and electric field on semiconductor...
In this paper, scandate doped pressed (SDP) cathodes were prepared by a new method of spray drying combined with two-step hydrogen reduction, instead of traditional mechanical mixing of scandium oxide and barium-calcium aluminates with tungsten. The microstructure, element distribution, and emission properties of the cathodes have been characterized by scanning electron microscope, energy dispersive...
Bipolar (electrons and holes) charge injection, the onset voltages of electroluminescence as low as 1.4 V, and power efficiency of around 0.2% are demonstrated in thin nanocrystalline-Si/SiO2 multilayer LEDs grown by plasma-enhanced CVD.
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