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Transition-metal-substituted indium thiospinels as novel intermediate-band materials: prediction and understanding of

P Palacios1, I Aguilera, K Sánchez

  • 1Instituto de Energía Solar and Departamento Tecnologías Especiales ETSI Telecomunicación, UPM, Ciudad Universitaria, Madrid 28040, Spain.

Physical Review Letters
|September 4, 2008
PubMed

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When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human eye.
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