GaN/AlN quantum disc single-nanowire photodetectors
- Rigutti, L.
- Tchernycheva, M.
- Bugallo, A.D.L.
- Jacopin, G.
- Julien, F.H.
- Songmuang, Rudeesun
- Monroy, E.
- Chou, S.T.
- Lin, Y.T.
- Tseng, P.H.
- Tu, L.W.
- Fortuna, F.
- Zagonel, L.
- Kociak, M.
- Stephan, O.
DOIAbstract
International audienceWe 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. (C) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinhei
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