Low Temperature Homoepitaxial Growth of 4H-SiC on 4° Off-Axis Carbon-Face Substrate Using BTMSM Source

2013 ◽  
Vol 740-742 ◽  
pp. 247-250 ◽  
Author(s):  
Hun Hee Lee ◽  
Han Seok Seo ◽  
Do Hyun Lee ◽  
Chang Hyun Kim ◽  
Hyun Woo Kim ◽  
...  

Homoepitaxial 4H-SiC thin films were grown on (0 0 0 -1) C-face substrate by cold-wall chemical vapor deposition (CVD) using bis-trimethylsilylmethane (BTMSM, C7H20Si2) precursor. Because of the polarity difference of C-face and (0 0 0 1) Si-face, epitaxial growth conditions of C-face was quite different from those of Si-face. To improve the quality of C-face epitaxial films, effects of epitaxial growth conditions on surface morphology and crystallinity of epitaxial films were investigated.

2007 ◽  
Vol 989 ◽  
Author(s):  
Mahdi Farrokh Baroughi ◽  
Hassan G. El-Gohary ◽  
Cherry Y. Cheng ◽  
Siva Sivoththaman

AbstractHighly conductive epiraxial silicon thin films, with conductivities more than 680 ¥Ø-1cm-1, were obtained using plasma enhanced chemical vapor deposition (PECVD) technique at 300¢ªC. The effect of hydrogen in growth of low temperature extrinsic Si thin films was studied using conductivity, Hall, and Raman measurements, and it was shown that epitaxial growth was possible at hydrogen dilution (HD) ratios more than 85%. The epitaxial growth of the extrinsic Si thin films at high hydrogen dilution regime was confirmed by high resolution transmission electron microscopy (HRTEM).


1988 ◽  
Vol 129 ◽  
Author(s):  
S. A. Hussien ◽  
N. H. Karam ◽  
S. M. Bedair ◽  
A.A. Fahmy ◽  
N. A. El-Masry

ABSTRACTLaser induced chemical vapor deposition (LCVD) of GaAs has been achieved at low temperature using trimethylgallium and arsine precursors. The deposited film traces the path of the Ar+ laser, thus making it attractive for several applications. The localized thermal expansion resulting from the laser induced temperature rise has to be elastically accomodated in order to prevent lattice distortion during the LCVD process. We report on the growth conditions that can be used without the occurence of plastic deformation in the epitaxial films. A model is presented to explain the thermal expansion induced distortion during the deposition process and will be compared with experimental results.


ACS Omega ◽  
2021 ◽  
Author(s):  
Muhammad Aniq Shazni Mohammad Haniff ◽  
Nur Hamizah Zainal Ariffin ◽  
Poh Choon Ooi ◽  
Mohd Farhanulhakim Mohd Razip Wee ◽  
Mohd Ambri Mohamed ◽  
...  

1995 ◽  
Vol 66 (21) ◽  
pp. 2867-2869 ◽  
Author(s):  
Akihiro Miyauchi ◽  
Kazuhiro Ueda ◽  
Yousuke Inoue ◽  
Takaya Suzuki ◽  
Yoshinori Imai

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Gui-fang Li ◽  
Shibin Liu ◽  
Shanglin Yang ◽  
Yongqian Du

We prepared magnetic thin films Ni81Fe19on single-crystal Si(001) substrates via single graphene layer through magnetron sputtering for Ni81Fe19and chemical vapor deposition for graphene. Structural investigation showed that crystal quality of Ni81Fe19thin films was significantly improved with insertion of graphene layer compared with that directly grown on Si(001) substrate. Furthermore, saturation magnetization of Ni81Fe19/graphene/Si(001) heterostructure increased to 477 emu/cm3with annealing temperatureTa=400°C, which is much higher than values of Ni81Fe19/Si(001) heterostructures withTaranging from 200°C to 400°C.


2007 ◽  
Vol 515 (5) ◽  
pp. 2921-2925 ◽  
Author(s):  
Chunyu Wang ◽  
Volker Cimalla ◽  
Genady Cherkashinin ◽  
Henry Romanus ◽  
Majdeddin Ali ◽  
...  

2021 ◽  
Author(s):  
Omar D. Jumaah ◽  
Yogesh Jaluria

Abstract Chemical vapor deposition (CVD) is a widely used manufacturing process for obtaining thin films of materials like silicon, silicon carbide, graphene and gallium nitride that are employed in the fabrication of electronic and optical devices. Gallium nitride (GaN) thin films are attractive materials for manufacturing optoelectronic device applications due to their wide band gap and superb optoelectronic performance. The reliability and durability of the devices depend on the quality of the thin films. The metal-organic chemical vapor deposition (MOCVD) process is a common technique used to fabricate high-quality GaN thin films. The deposition rate and uniformity of thin films are determined by the thermal transport processes and chemical reactions occurring in the reactor, and are manipulated by controlling the operating conditions and the reactor geometrical configuration. In this study, the epitaxial growth of GaN thin films on sapphire (AL2O3) substrates is carried out in two commercial MOCVD systems. This paper focuses on the composition of the precursor and the carrier gases, since earlier studies have shown the importance of precursor composition. The results show that the flow rate of trimethylgallium (TMG), which is the main ingredient in the process, has a significant effect on the deposition rate and uniformity of the films. Also the carrier gas plays an important role in deposition rate and uniformity. Thus, the use of an appropriate mixture of hydrogen and nitrogen as the carrier gas can improve the deposition rate and quality of GaN thin films.


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