scholarly journals Influence of Oxygen on Zinc Oxide Films Fabricated by Ion-Beam Sputter Deposition

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Jin-Cherng Hsu ◽  
Yueh-Sheng Chiang

In this study, zinc oxide films were deposited by an ion-beam sputter deposition in various oxygen partial pressures at room temperature. The films changed the structures from amorphous to polycrystalline with increasing the oxygen partial pressure (). The optimal was found at Torr because the film prepared at the oxygen partial pressure had the lowest resistivity and the highest transparence in the visible light region. The lowest resistivity results from a great number of oxygen vacancy sites formed on the polycrystalline surface as exposed to the atmosphere. Moreover, the film has the highest XRD peak intensity, smallest FWHM diffraction peak, smallest -spacing, and smallest biaxial stress.

2011 ◽  
Vol 3 (1) ◽  
pp. 77-81
Author(s):  
Yasemin Aydin ◽  
Mehmet Oguz Guler ◽  
Ozgur Cevher ◽  
Deniz Gultekin ◽  
Hatem Akbulut

Oxygen ◽  
2021 ◽  
Vol 1 (1) ◽  
pp. 62-72
Author(s):  
Gasidit Panomsuwan ◽  
Nagahiro Saito

Epitaxial SrTiO3 (STO) thin films were grown on (001)-oriented LaAlO3 (LAO) substrates at 800 °C by an ion beam sputter deposition (IBSD). Oxygen partial pressure (PO2) was varied at 1.5 × 10−5, 1.5 × 10−4, and 1.5 × 10−3 Torr during the growth. The effects of PO2 on crystal structure, oxygen vacancy, and surface morphology of the STO films were investigated and are discussed to understand their correlation. It was found that PO2 played a significant role in influencing the crystal structure, oxygen vacancy, and surface morphology of the STO films. All STO films grew on the LAO substrates under a compressive strain along an in-plane direction (a- and b-axes) and a tensile strain along the growth direction (c-axis). The crystalline quality of STO films was slightly improved at higher PO2. Oxygen vacancy was favorably created in the STO lattice grown at low PO2 due to a lack of oxygen during growth and became suppressed at high PO2. The existence of oxygen vacancy could result in a lattice expansion in both out-of-plane and in-plane directions due to the presence of Ti3+ instead of Ti4+ ions. The surface roughness of the STO films gradually decreased and was nearly close to that of the bare LAO substrate at high PO2, indicating a two-dimensional (2D) growth mode. The results presented in this work provide a correlation among crystal structure, oxygen vacancy, and surface morphology of the epitaxial STO films grown by IBSD, which form a useful guideline for further study.


2013 ◽  
Vol 14 (1) ◽  
pp. 182-186 ◽  
Author(s):  
Kuang-Teng Hung ◽  
Hsuan-Ta Wu ◽  
Sheng-Wen Fu ◽  
Hui-Ju Chen ◽  
Chu-Yun Hsiao ◽  
...  

Vacuum ◽  
2013 ◽  
Vol 87 ◽  
pp. 227-231 ◽  
Author(s):  
Yu-Yun Chen ◽  
Paul W. Wang ◽  
Jin-Cherng Hsu ◽  
Chun-Yi Lee

2003 ◽  
Vol 57 (8) ◽  
pp. 1435-1440 ◽  
Author(s):  
W. Gao ◽  
Z.W. Li ◽  
R. Harikisun ◽  
S.-S. Chang

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