A versatile hot electron emitter of InGaAs/AlAs heterostructure with wide energy range at high current density

A versatile hot electron emitter of InGaAs/AlAs heterostructure with wide energy range at high current density has been designed theoretically and fabricated experimentally. Such an emitter can supply a high current density up to View the MathML source at View the MathML source hot electron energy. A good agreement between the theoretical calculation results and experimental results has been obtained. It leads to an initially important application for studying the hot electron dynamics in the scanning hot electron microscopy (SHEM) experiment.