Optical Bandgap Energy of Si Nanoparticle Composite Films Deposited by a Multi-Hollow Discharge Plasma Chemical Vapor Deposition Method

2016 ◽  
Vol 16 (10) ◽  
pp. 10753-10757 ◽  
Author(s):  
Susumu Toko ◽  
Yoshinori Kanemitsu ◽  
Kazunori Koga ◽  
Hyunwoong Seo ◽  
Naho Itagaki ◽  
...  
2002 ◽  
Vol 742 ◽  
Author(s):  
Mitsuo Okamoto ◽  
Ryoji Kosugi ◽  
Shinichi Nakashima ◽  
Kenji Fukuda ◽  
Kazuo Arai

ABSTRACTHomoepitaxial 4H-SiC film growth has been carried out at temperatures as low as 1000°C on 4H-SiC of Si-face and C-face by microwave plasma chemical vapor deposition method. The extent of step-bunching of those films grown on C-face was low in comparison with that on Si-face, although large and irregular shaped step-bunching was occurred in both films grown on Si-face and C-face. For the first step to application for the electrical devices, the electrical properties of the μPCVD grown films was characterized by fabricating simple pn-junction structure. The obtained SiC films indicated n-type conductivity and the amount of background donor impurities of the films grown on C-face substrates were lower by one order than that on Si-face.


2005 ◽  
Vol 480-481 ◽  
pp. 71-76 ◽  
Author(s):  
Jin Chun Jiang ◽  
Wen Juan Cheng ◽  
Yang Zhang ◽  
He Sun Zhu ◽  
De Zhong Shen

Carbon nitride films were grown on Si substrates by a microwave plasma chemical vapor deposition method, using mixture of N2, CH4 and H2 as precursor. Scanning electron microscopy shows that the films consisted of a large number of hexagonal crystallites. The dimension of the largest crystallite is about 3 µm. The X-ray photoelectron spectroscopy suggests that nitrogen and carbon in the films are bonded through hybridized sp2 and sp3 configurations. The X-ray diffraction pattern indicates that the major part of the films is composed of α-, β-, pseudocubic C3N4 and graphitic C3N4. The Raman peaks match well with the calculated Raman frequencies of α- and β-C3N4, revealing the formation of the α- and β-C3N4 phase.


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