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Measurements of the band gap of wurtzite InAs1−xPx nanowires using photocurrent spectroscopy

Författare:
Publiceringsår: 2007
Språk: Engelska
Publikation/Tidskrift/Serie: Applied Physics Reviews
Volym: 101
Nummer: 12
Dokumenttyp: Artikel i tidskrift
Förlag: American Institute of Physics

Sammanfattning

We report measurements of the band gap of InAs1−xPx nanowires having wurtzite crystal structure

as a function of the composition for 0.14
spectroscopy on single InAs nanowires with a centrally placed InAs1−xPx segment. The photocurrent

measurements are performed at a temperature of 5 K. The data fit well with a quadratic dependence

of the band gap on the composition. Using a bowing parameter of 0.2 eV the extracted values for

the band gaps are 0.54 eV for InAs and 1.65 eV for InP. These values are larger than the

corresponding zinc blende band gaps. We attribute this increase to the fact that the crystal structure

is wurtzite rather than zinc blende

Nyckelord

  • Condensed Matter Physics
  • Chemical Sciences

Övriga

Published
  • ISSN: 0021-8979

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