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term: Mössbauer spectroscopy

a family of methods based on the Mössbauer effect designed to study physical and chemical properties of condensed matter (mostly solids) as well as micro- and nano-sized objects (nuclei, ions, chemical and biological systems, etc.) in solid bodies. ...

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term: blue shift

blue shift

Determination:

shift of the optical absorption edge to the high-frequency range observed in semiconductors with particle size decrease.

Description:

The effect is due to the fact that size reduction of a semiconductor crystal is accompanied with band gap widening. Therefore, higher absorbed quantum energy is required to excite electrons from the valence band into the conduction band, and this results in absorption edge shift.

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