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Fabrication and photoluminescence of highly crystalline GaN and GaN:Mg nanoparticles
Ogi T.a, Itoh Y.a, Abdullah M.b, Iskandar F.a, Azuma Y.c, Okuyama K.a
a Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, Japan
b Department of Physics, Bandung Institute of Technology, Indonesia
c Hiroshima Joint Research Center for Nanotechnology Particle Project, Japan Chemical Innovation Institute, Japan
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]Well-dispersed nano-sized gallium nitride (GaN) and magnesium-doped GaN (GaN:Mg) particles were successfully prepared from nano-sized gallium oxide (Ga2O3) particles under a flow of ammonia gas. The gallium oxide nanoparticles were prepared from mixtures of gallium nitrate aqueous solution and ammonia solution that were heated to between 600 and 800 °C. Addition of a proportional amount of ammonia into the solution is a key point for production of well-dispersed nano-sized gallium oxide particles. Gallium oxide nanoparticles less than 20 nm in size were obtained when using an NH 3 to Ga(NO3)3 ratio of 1:1 (mol/mol) with a heating temperature of 800 °C. Nitridation of gallium oxide nanoparticles under a flow of ammonia at a heating temperature of 800 °C resulted in nano-sized GaN particles less than 40 nm in size. We investigated the effects of preparation conditions such as solution composition and operating temperature on the characteristics of gallium nitride particles. This method allows simple doping of GaN with alkali earth metals. It was shown that the doping with magnesium resulted in intense blue luminescence from particles when UV excitation at 254 nm was used. © 2005 Elsevier B.V. All rights reserved.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Band gap,Nanomaterials,Nanostructure,Semiconducting materials[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]A1. Nanostructure,B1. Nanomaterials,B2. Semiconducting materials[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]Grant-in-Aids and a fellowship sponsored by the Ministry of Education, Culture, Sports, Science and Technology of Japan and the Japan Society for the Promotion of Science (JSPS) are gratefully acknowledged. As well, a postdoctoral fellowship from JSPS for F.I. is acknowledged. This work was also supported in part by the New Energy and Industrial Technology Development Organization (NEDO)’s “Nanotechnology Materials Program—Nanotechnology Particle Project” based on funds provided by the Ministry of Economy, Trade, and Industry (METI), Japan.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1016/j.jcrysgro.2005.04.021[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]