Polarity determination for the CdxZn1-xS nanocombs by EELS.
Comb-like Cd(x)Zn(1-x)S nanostructures have been synthesized by one-step metallo-organic chemical vapor deposition (MOCVD). The microstructure and composition were characterized by analytical transmission electron microscopy (TEM). The ribbon of the comb-like structure is along [2-1-10] (the a-axis), and the nanotips are along [0001] (the c-axis). The atomic location by channeling-enhanced microanalysis (ALCHEMI) technique was used to determine the polarity of the crystal via electron energy-loss spectroscopy (EELS). The thickness dependence, delocalization and beam convergent effect are discussed here. The investigations reveal that the growth mechanism is consistent with the asymmetric growth.
Zhang
X Z
XZ
State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, People's Republic of China.
Zhai
T Y
TY
Ma
Y
Y
Yao
J N
JN
Yu
D P
DP
D002104:Cadmium / Q000737:chemistry; D004577:Electron Probe Microanalysis / Q000379:methods; D019216:Metals, Heavy / Q000737:chemistry*; D017348:Microscopy, Electron, Scanning Transmission / Q000379:methods*; D049329:Nanostructures / Q000737:chemistry*; D013054:Spectrophotometry, Atomic; D015032:Zinc / Q000737:chemistry
D019216:Metals, Heavy; D002104:Cadmium; D015032:Zinc