GaN/AlN quantum disc single-nanowire photodetectors

✍ Scribed by Rigutti, L. ;Tchernycheva, M. ;Bugallo, A. De Luna ;Jacopin, G. ;Julien, F. H. ;Songmuang, R. ;Monroy, E. ;Chou, S. T. ;Lin, Y. T. ;Tseng, P. H. ;Tu, L. W. ;Fortuna, F. ;Zagonel, L. ;Kociak, M. ;Stephan, O.

• Book ID: 105365834
• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 412 KB
• Volume: 207
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200983652

✦ Synopsis

Abstract

We demonstrate single‐nanowire photodetectors based on nanowires containing GaN/AlN quantum disc heterostructures. The structural and electronic properties are investigated by photocurrent and microphotoluminescence spectroscopy, as well as scanning transmission electron microscopy. Single‐nanowire photodetectors are visible‐blind with photoresponse in the ultraviolet spectral range arising from interband absorption in the multi‐quantum disc GaN/AlN heterostructure. The photoconductive gain as high as 10^4^ is measured.