Ontology highlight
ABSTRACT:
SUBMITTER: Assali S
PROVIDER: S-EPMC3624814 | biostudies-other | 2013 Apr
REPOSITORIES: biostudies-other
Nano letters 20130318 4
The main challenge for light-emitting diodes is to increase the efficiency in the green part of the spectrum. Gallium phosphide (GaP) with the normal cubic crystal structure has an indirect band gap, which severely limits the green emission efficiency. Band structure calculations have predicted a direct band gap for wurtzite GaP. Here, we report the fabrication of GaP nanowires with pure hexagonal crystal structure and demonstrate the direct nature of the band gap. We observe strong photolumines ...[more]