Title :
Preparation and properties of electrospun gallium nitride nanofibers
Author :
Meléndez, Anamaris ; Morales, Kristle ; Ramos, Idalia ; Campo, Eva ; Santiago-Avilés, Jorge J.
Author_Institution :
Dept. of Phys. & Electron., Univ. of Puerto Rico at Humacao, Humacao, Puerto Rico
Abstract :
Gallium nitride (GaN) nanofibers have been produced using electrospinning and a precursor solution composed of gallium nitrate and a cellulose acetate solution. The electrospun fibers were thermally decomposed at 400°C under a nitrogen flow and nitridized under ammonia at 900°C. Scanning electron microscopy (SEM) and profilometry confirmed the production of fibers with diameters ranging from 20 to a few hundred nanometers and lengths of up to few centimeters. X-ray diffraction (XRD) showed a crystalline wurtzite structure. I-V characteristics of single nanofibers sintered for 3, 5 and 7 hours under ammonia showed increments in conductance with time of heating.
Keywords :
III-V semiconductors; X-ray diffraction; crystal structure; electrical conductivity; electrospinning; gallium compounds; heat treatment; nanofabrication; nanofibres; nitridation; pyrolysis; scanning electron microscopy; semiconductor growth; wide band gap semiconductors; GaN; I-V characteristics; SEM; X-ray diffraction; XRD; ammonia nitridation; cellulose acetate solution; crystalline wurtzite structure; electrical conductance; electrospinning; electrospun gallium nitride nanofibers; gallium nitrate solution; heating; precursor solution; profilometry; scanning electron microscopy; sintering; temperature 400 degC; temperature 900 degC; thermal decomposition; time 3 hour to 7 hour; Atmosphere; Gallium nitride; Heating; III-V semiconductor materials; Polymers; Production; Scanning electron microscopy; Thermal conductivity; Voltage; X-ray scattering; GaN; XRD; conductance; electrospinning; nanofibers; thermal decomposion; thermogravimetry;
Conference_Titel :
Nanotechnology, 2009. IEEE-NANO 2009. 9th IEEE Conference on
Conference_Location :
Genoa
Print_ISBN :
978-1-4244-4832-6
Electronic_ISBN :
1944-9399
