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Type: 
Journal
Description: 
In this letter we report on spectral photoconductivity (PC) on different sections of single MBE-grown GaN nanowhiskers of diameters ranging on the order of 100 nm. The photoconductivity spectra show, besides the band-gap related transition, deep-levels corresponding to the yellow, green, and blue bands. A strong spatial localization of specific photocurrent peaks has been observed, indicating that the defects responsible for such transitions are distributed inhomogeneously along the column growth direction.
Publisher: 
American Chemical Society
Publication date: 
12 Jul 2006
Authors: 

Anna Cavallini, Laura Polenta, Marco Rossi, Thomas Richter, Michel Marso, Ralph Meijers, Raffaella Calarco, Hans Lüth

Biblio References: 
Volume: 6 Issue: 7 Pages: 1548-1551
Origin: 
Nano letters