Characterisation of Thin Film and Single-Crystal CVD Diamond by Absorption and Luminescence Spectroscopy

1989 ◽  
Vol 162 ◽  
Author(s):  
A. T. Collins ◽  
M. Kamo ◽  
Y. Sato

ABSTRACTPolycrystalline films and single crystals of diamond produced by microwaveassisted chemical vapour deposition (CVD) have been examined using absorption and cathodoluminescence spectroscopy. Measurements have been carried out on material as-grown, and after radiation damage by 2 MeV electrons.

2015 ◽  
Vol 619 ◽  
pp. 406-410 ◽  
Author(s):  
Jianjun Chen ◽  
Mingming Wang ◽  
Xin Liao ◽  
Zhaoxiang Liu ◽  
Judong Zhang ◽  
...  

2005 ◽  
Vol 879 ◽  
Author(s):  
M. Wei ◽  
D. Zhi ◽  
J. L. MacManus-Driscoll

AbstractZnO, which exhibits a direct bandgap of 3.37 eV at room temperature with a large exciton binding energy of 60 meV,is of considerable technological importance because of its potential use in short-wavelength devices, such as ultraviolet (UV) light-emitting diodes and laser diodes. The fabrication and application of 1-D ZnO nanostructures has attracted considerable interest in recent years. In this work, we produced single crystal nanowires of zinc oxide using a novel self-seeded growth using ultrasonic spray assisted chemical vapour deposition, in which a nanocrystalline seed layer was first deposited onto a glass substrate and the nanowires subsequently grown using a different precursor concentration and substrate temperature. The diameter of the nanowires is in the range of 20-80 nm and the length of the wires is as long as 10 μm. The single crystal nature of the nanowires was revealed by high resolution transmission electron microscopy. The formation of liquid droplets due to the reducing atmosphere and the higher temperature during the nanowire growth was found to be the key step of the ZnO nanowire formation.


2018 ◽  
Vol 2 (6) ◽  
pp. 1305-1311 ◽  
Author(s):  
Sangchai Sarawutanukul ◽  
Nutthaphon Phattharasupakun ◽  
Juthaporn Wutthiprom ◽  
Montree Sawangphruk

In this study, a graphene oxide (GO) carbocatalyst was synthesized as a thin film on a 3D Ni foam substrate (GO@Ni) by oxidative chemical vapour deposition (CVD) using methanol and water as precursors.


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