Quantum heterostructure

Quantum heterostructure is a heterostructure in a substrate (usually a semiconductor material), with size restricting the movements of the charge carriers and forcing them into a quantum confinement, leading to formation of a set of discrete energy levels at which the carriers can exist. Quantum heterostructures have sharper density of states than structures of more conventional sizes.

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Quantum heterostructures are important for fabrication of short-wavelength light-emitting diodes and diode lasers, and for other optoelectronic applications, eg. high-efficiency photovoltaic cells.

Examples of quantum heterostructures are:

• Quantum wells
• Quantum dots
• Quantum wires

See also

• Quantum heterostructure – development and applications