Dark and photo-conductivity in ordered array of nanocrystals.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 24117108.
- Also identified by DOI 10.1021/nl403033f.
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Abstract
A theory of photo- and dark-band conductivities in semiconductor supercrystals consisting of nanocrystals is developed by assuming scattering by structural defects in the supercrystals. A new proposed mechanism of photoexcitation, which is triggered by an efficient Auger ionization of charged nanocrystals, provides explanation for the measured photocurrent being 2-3 orders of magnitude larger than the dark current. For dark conductivity, the metal-insulator transitions and temperature dependence of mobility in the metal phase are considered.
Medical subject headings
- Nanoparticles
- Nanotechnology
- Semiconductors