AVS 53rd International Symposium
    Nanometer-scale Science and Technology Thursday Sessions
       Session NS-ThP

Paper NS-ThP23
Synthesis and Optical Properties of Indium Oxide Nanocrystal Chains Grown by Thermal Oxidation Method

Thursday, November 16, 2006, 5:30 pm, Room 3rd Floor Lobby

Session: Nanoscale Science and Technology Poster Session
Presenter: T.S. Ko, National Chiao Tung University, Taiwan
Authors: T.S. Ko, National Chiao Tung University, Taiwan
C.P. Chu, National Chiao Tung University, Taiwan
H.G. Chen, National Chiao Tung University, Taiwan
T.C. Lu, National Chiao Tung University, Taiwan
H.C. Kuo, National Chiao Tung University, Taiwan
S.C. Wang, National Chiao Tung University, Taiwan
Correspondent: Click to Email
We reported the synthesis of indium oxide nanocrystal chains on silicon substrates by using thermal evaporation of pure indium at 0.1 torr of nitrogen atmosphere. Indium nanocrystal chains were grown through vapor-liquid-solid process by using gold nanoparticles as catalyst on native silicon dioxide. The composition of the nanocrystal was identified by energy dispersion spectrum and the result showed the existence of indium oxide compound. Scanning electron microscopy investigations showed indium oxide nanocrystal chains were formed. The nanocrystal chains comprised many well-shaped octahedron nanoparticles with their size ranging from 20 nm to 100 nm connected each other to form a network. Both high resolution transmission electron microscopy and diffraction pattern revealed that the indium oxide nanocrystal chains were single crystalline grown along [111] direction. Photoluminescence study of indium oxide nanocrystal chains exhibited main photoemission at 544 nm. Such self-assembled nanocrystal chains should have great potential for applications of novel optoelectronic devices and nano-photonics.