
Proceedings Paper
Direct band gap wurtzite GaP nanowires for LEDs and quantum devicesFormat | Member Price | Non-Member Price |
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Paper Abstract
Commercially available light-emitting diodes (LEDs) suffer from low-efficiency in the green region of the visible
spectrum. In order to solve this issue III-V materials such as Gallium phosphide (GaP) can be investigated. GaP in the
zinc blende (ZB) crystal structure has an indirect band gap, limiting the efficiency of the green emission. However, when
the material is grown with wurtzite (WZ) crystal phase a direct band gap is predicted. Here, we show the fabrication and
the characterization of wurtzite GaP nanowires, together with the demonstration of the direct band gap. The strong
photoluminescence signal observed at 594 nm with a lifetime in the order of 1ns matches with the expectation for a
direct band gap material. Furthermore, the emission wavelength can be tuned across a wide range of the visible spectrum
(555−690 nm) by incorporating aluminum or arsenic in the WZ GaP nanowires.
Paper Details
Date Published: 16 September 2014
PDF: 8 pages
Proc. SPIE 9174, Nanoepitaxy: Materials and Devices VI, 917405 (16 September 2014); doi: 10.1117/12.2063865
Published in SPIE Proceedings Vol. 9174:
Nanoepitaxy: Materials and Devices VI
Nobuhiko P. Kobayashi; A. Alec Talin; Albert V. Davydov; M. Saif Islam, Editor(s)
PDF: 8 pages
Proc. SPIE 9174, Nanoepitaxy: Materials and Devices VI, 917405 (16 September 2014); doi: 10.1117/12.2063865
Show Author Affiliations
S. Assali, Technische Univ. Eindhoven (Netherlands)
D. Kriegner, Johannes Kepler Univ. (Austria)
I. Zardo, Technische Univ. Eindhoven (Netherlands)
S. Plissard, LAAS, CNRS (France)
D. Kriegner, Johannes Kepler Univ. (Austria)
I. Zardo, Technische Univ. Eindhoven (Netherlands)
S. Plissard, LAAS, CNRS (France)
M. A. Verheijen, Technische Univ. Eindhoven (Netherlands)
Philips Innovation Services Eindhoven (Netherlands)
J. Stangl, Johannes Kepler Univ. (Austria)
J. E. M. Haverkort, Technische Univ. Eindhoven (Netherlands)
E. P. A. M. Bakkers, Technische Univ. Eindhoven (Netherlands)
Delft Univ. of Technology (Netherlands)
Philips Innovation Services Eindhoven (Netherlands)
J. Stangl, Johannes Kepler Univ. (Austria)
J. E. M. Haverkort, Technische Univ. Eindhoven (Netherlands)
E. P. A. M. Bakkers, Technische Univ. Eindhoven (Netherlands)
Delft Univ. of Technology (Netherlands)
Published in SPIE Proceedings Vol. 9174:
Nanoepitaxy: Materials and Devices VI
Nobuhiko P. Kobayashi; A. Alec Talin; Albert V. Davydov; M. Saif Islam, Editor(s)
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