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GaN based nanorods for solid state lighting
Li, Shunfeng ; Waag, Andreas
Journal of applied physics, 2012-04, Vol.111 (7), p.071101-071101-23
[Periódico revisado por pares]
United States: American Institute of Physics
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Título:
GaN based nanorods for solid state lighting
Autor:
Li, Shunfeng
;
Waag, Andreas
Assuntos:
CATALYSTS
;
CHEMICAL VAPOR DEPOSITION
;
CRYSTALS
;
ELECTRICAL PROPERTIES
;
FABRICATION
;
GALLIUM NITRIDES
;
LAYERS
;
LIGHT EMITTING DIODES
;
MATERIALS
SCIENCE
;
MOLECULAR BEAM EPITAXY
;
MORPHOLOGY
;
NANOSCIENCE AND NANOTECHNOLOGY
;
NANOSTRUCTURES
;
PHOTOLUMINESCENCE
;
POTENTIALS
;
SEMICONDUCTOR MATERIALS
;
SOLIDS
;
SUBSTRATES
;
SURFACES
;
THIN FILMS
;
VISIBLE SPECTRA
É parte de:
Journal of applied physics, 2012-04, Vol.111 (7), p.071101-071101-23
Descrição:
In recent years, GaN nanorods are emerging as a very promising novel route toward devices for nano-optoelectronics and nano-photonics. In particular, core-shell light emitting devices are thought to be a breakthrough development in solid state lighting, nanorod based LEDs have many potential advantages as compared to their 2 D thin film counterparts. In this paper, we review the recent developments of GaN nanorod growth, characterization, and related device applications based on GaN nanorods. The initial work on GaN nanorod growth focused on catalyst-assisted and catalyst-free statistical growth. The growth condition and growth mechanisms were extensively investigated and discussed. Doping of GaN nanorods, especially p-doping, was found to significantly influence the morphology of GaN nanorods. The large surface of 3 D GaN nanorods induces new optical and electrical properties, which normally can be neglected in layered structures. Recently, more controlled selective area growth of GaN nanorods was realized using patterned substrates both by metalorganic chemical vapor deposition (MOCVD) and by molecular beam epitaxy (MBE). Advanced structures, for example, photonic crystals and DBRs are meanwhile integrated in GaN nanorod structures. Based on the work of growth and characterization of GaN nanorods, GaN nanoLEDs were reported by several groups with different growth and processing methods. Core/shell nanoLED structures were also demonstrated, which could be potentially useful for future high efficient LED structures. In this paper, we will discuss recent developments in GaN nanorod technology, focusing on the potential advantages, but also discussing problems and open questions, which may impose obstacles during the future development of a GaN nanorod based LED technology.
Editor:
United States: American Institute of Physics
Idioma:
Inglês
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