Beaklike SnO2 nanorods with strong photoluminescent and field-emission properties.
Beaklike SnO2 nanorods were synthesized by a vapor-liquid-solid approach using Au as a catalyst. The nanorods grow along the [10 1] direction and the beak is formed by switching the growth direction to [1 12] through controlling the growth conditions at the end of the synthesis. The photoluminescence (PL) spectrum of the nanorods exhibits visible light emission with a peak at 602 nm. The field-emission (FE) properties of the nanorods have been measured to exhibit a turn-on field of 5.8 V microm(-1). A comparative study of FE measurements between SnO2 nanorods with uniform diameters and these beaklike nanorods suggests that the shape and curved tips are important factors in determining the FE properties.
He
Jr H
JH
Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 300, Taiwan.
Wu
Te H
TH
Hsin
Cheng L
CL
Li
Kun M
KM
Chen
Lih J
LJ
Chueh
Yu L
YL
Chou
Li J
LJ
Wang
Zhong L
ZL
D003460:Crystallization / Q000379:methods*; D004307:Dose-Response Relationship, Radiation; D008027:Light; D049449:Luminescence; D008163:Luminescent Measurements / Q000379:methods*; D008422:Materials Testing; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods*; D043942:Nanotubes / Q000737:chemistry* / Q000528:radiation effects / Q000648:ultrastructure*; D010316:Particle Size; D010777:Photochemistry / Q000379:methods; D011829:Radiation Dosage; D013499:Surface Properties; D017971:Tin Compounds / Q000737:chemistry* / Q000528:radiation effects
D017971:Tin Compounds; C045358:stannic oxide