1. The common-base emitter current In hot-electron transistors, the emitter/base junction should allow the injection of electrons into the graphene base. The emitter current is the source of all the electrons injected into the graphene base and it consists of two components: one component is due to Fowler-Nordheim tunneling, and the other component is due to thermionic emission (e.g. the curren...

We present results of an experimental and theoretical study of the temperature dependence of the off-state breakdown voltage of InAlAsDnGaAs high electron mobility transistors (HEMTs). We find that the breakdown voltage (BV) has a negative temperature coefficient that is more prominent for lower values of the extrinsic sheet carrier concentration (nJ. Structural parameters such as the insulator...

We investigate the electronic transport properties across the pentacene/graphene interface. Current transport across the pentacene/graphene interface is found to be strikingly different from transport across pentacene/HOPG and pentacene/Cu interfaces. At low voltages, diodes using graphene as a bottom electrode display Poole–Frenkel emission, while diodes with HOPG and Cu electrodes are dominat...

Engineering a material's work function is of central importance for many technologies and in particular electron emitters used high-power vacuum electronics thermionic energy converters. A low surface typically achieved through unstable functional species, especially high power emitter applications. Discovering engineering new materials with intrinsic, stable functions obtainable without volati...

A detailed theoretical investigation of dark current mechanisms is performed for a novel Si n-i homojunction interfacial work function internal photoemission ~HIWIP! far-infrared ~FIR! detector. Thermionic emission, thermionic field emission and field emission currents, including the image force effect, are calculated and compared as functions of bias voltage and temperature. The bias and tempe...

We use computational simulations to study the electron emission and propagation in planar vacuum diodes. show how space-charge affects thermionic from cathodes with two different values of work function that form a checkerboard pattern finite extent on cathode surface. confirm that, for intermediate temperature, local current density low regions can exceed limit entire cathode. As temperature r...