Structure and luminescence of nanocrystalline gallium nitride synthesized by a novel polymer pyrolysis route

Rafael Garcia; Gustavo A. Hirata; Alan C. Thomas; Fernando Ponce

doi:10.1016/j.optmat.2006.03.004

Structure and luminescence of nanocrystalline gallium nitride synthesized by a novel polymer pyrolysis route

Rafael Garcia, Gustavo A. Hirata, Alan C. Thomas, Fernando Ponce

Physics

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

Thermal decomposition in a horizontal quartz tube reactor of a polymer [-(CH₆N₄O)₃Ga(NO₃)₃-] in a nitrogen atmosphere, yield directly nano-structured gallium nitride (GaN) powder. The polymer was obtained by the reaction between high purity gallium nitrate (Ga(NO₃)₃) dissolved in toluene and carbohydrazide as an azotic ligand. The powder synthesized by this method showed a yellow color and elemental analysis suggested that the color is due to some carbon and oxygen impurities in the as-synthesized powder. Electron microscopy showed that the as-synthesized powders consist of a mixture of various porous particles containing nanowires and nano-sized platelets. The size of the crystallites can be controlled by annealing processes under ammonia. Photoluminescence analysis at 10 K on as-synthesized powders showed a broad red luminescence around 668 nm under UV laser excitation (He-Cd laser, 325 nm). However after annealing process the red luminescence disappears and the typical band edge emission of GaN around 357 nm (3.47 eV) and the UV band were the dominant emissions in the PL spectra.

Original language	English (US)
Pages (from-to)	19-23
Number of pages	5
Journal	Optical Materials
Volume	29
Issue number	1
DOIs	https://doi.org/10.1016/j.optmat.2006.03.004
State	Published - Oct 2006

Keywords

GaN
Luminescence
Nanocrystals

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
General Computer Science
Atomic and Molecular Physics, and Optics
Spectroscopy
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry
Electrical and Electronic Engineering

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10.1016/j.optmat.2006.03.004

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title = "Structure and luminescence of nanocrystalline gallium nitride synthesized by a novel polymer pyrolysis route",

abstract = "Thermal decomposition in a horizontal quartz tube reactor of a polymer [-(CH6N4O)3Ga(NO3)3-] in a nitrogen atmosphere, yield directly nano-structured gallium nitride (GaN) powder. The polymer was obtained by the reaction between high purity gallium nitrate (Ga(NO3)3) dissolved in toluene and carbohydrazide as an azotic ligand. The powder synthesized by this method showed a yellow color and elemental analysis suggested that the color is due to some carbon and oxygen impurities in the as-synthesized powder. Electron microscopy showed that the as-synthesized powders consist of a mixture of various porous particles containing nanowires and nano-sized platelets. The size of the crystallites can be controlled by annealing processes under ammonia. Photoluminescence analysis at 10 K on as-synthesized powders showed a broad red luminescence around 668 nm under UV laser excitation (He-Cd laser, 325 nm). However after annealing process the red luminescence disappears and the typical band edge emission of GaN around 357 nm (3.47 eV) and the UV band were the dominant emissions in the PL spectra.",

keywords = "GaN, Luminescence, Nanocrystals",

author = "Rafael Garcia and Hirata, {Gustavo A.} and Thomas, {Alan C.} and Fernando Ponce",

note = "Funding Information: This research has been partially supported by CONACYT (M{\'e}xico), the DOE Materials Corridor Program, and Rogers Corporation, Durel Division.",

year = "2006",

month = oct,

doi = "10.1016/j.optmat.2006.03.004",

language = "English (US)",

volume = "29",

pages = "19--23",

journal = "Optical Materials",

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T1 - Structure and luminescence of nanocrystalline gallium nitride synthesized by a novel polymer pyrolysis route

AU - Garcia, Rafael

AU - Hirata, Gustavo A.

AU - Thomas, Alan C.

AU - Ponce, Fernando

N1 - Funding Information: This research has been partially supported by CONACYT (México), the DOE Materials Corridor Program, and Rogers Corporation, Durel Division.

PY - 2006/10

Y1 - 2006/10

N2 - Thermal decomposition in a horizontal quartz tube reactor of a polymer [-(CH6N4O)3Ga(NO3)3-] in a nitrogen atmosphere, yield directly nano-structured gallium nitride (GaN) powder. The polymer was obtained by the reaction between high purity gallium nitrate (Ga(NO3)3) dissolved in toluene and carbohydrazide as an azotic ligand. The powder synthesized by this method showed a yellow color and elemental analysis suggested that the color is due to some carbon and oxygen impurities in the as-synthesized powder. Electron microscopy showed that the as-synthesized powders consist of a mixture of various porous particles containing nanowires and nano-sized platelets. The size of the crystallites can be controlled by annealing processes under ammonia. Photoluminescence analysis at 10 K on as-synthesized powders showed a broad red luminescence around 668 nm under UV laser excitation (He-Cd laser, 325 nm). However after annealing process the red luminescence disappears and the typical band edge emission of GaN around 357 nm (3.47 eV) and the UV band were the dominant emissions in the PL spectra.

AB - Thermal decomposition in a horizontal quartz tube reactor of a polymer [-(CH6N4O)3Ga(NO3)3-] in a nitrogen atmosphere, yield directly nano-structured gallium nitride (GaN) powder. The polymer was obtained by the reaction between high purity gallium nitrate (Ga(NO3)3) dissolved in toluene and carbohydrazide as an azotic ligand. The powder synthesized by this method showed a yellow color and elemental analysis suggested that the color is due to some carbon and oxygen impurities in the as-synthesized powder. Electron microscopy showed that the as-synthesized powders consist of a mixture of various porous particles containing nanowires and nano-sized platelets. The size of the crystallites can be controlled by annealing processes under ammonia. Photoluminescence analysis at 10 K on as-synthesized powders showed a broad red luminescence around 668 nm under UV laser excitation (He-Cd laser, 325 nm). However after annealing process the red luminescence disappears and the typical band edge emission of GaN around 357 nm (3.47 eV) and the UV band were the dominant emissions in the PL spectra.

KW - GaN

KW - Luminescence

KW - Nanocrystals

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Structure and luminescence of nanocrystalline gallium nitride synthesized by a novel polymer pyrolysis route

Abstract

Keywords

ASJC Scopus subject areas

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