Interatomic/intermolecular Coulombic decay (ICD) is a very efficient and fast electron relaxation process relying on the correlation between electrons. Such process occurs by passing the excess excitation energy of one electron to another electron in a neighboring atom<br/>or molecule, resulting in the subsequent ionization of this atom/molecule. We study the ICD process in a two coupled quantum wells (QWs) nano-structure. The ICD in the QWs nanostructure works in the same manner as in molecular clusters. QWs are widely used in optoelectronic devices such as laser diodes and photodetectors. We study the ICD decay process, using the Hermitian and non-Hermitian formalism of quantum mechanics, and compared it with the other decay processes in our system. In this work, we engineer our system such that the ICD is enhanced, and overcome other decay mechanism in the QWs nano-structure. Furthermore, we design the nano-structure such<br/>that the ICD electron is emitted in the perpendicular direction to the semiconductor layers. This means that only vertical current is expected in such a case, even when the bias on the nano-structure is small as one wishes. Based on our results we design an experiment that will observe the ICD phenomenon in the QWs nano-structure. Moreover, based on our finding a wavelength-sensitive detector which is efficient even at low intensities can be designed.<br/><br/>

Towards a wavelength sensitive detector, based on ICD in a system of coupled quantum wells

2019 Fall National Meeting

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