scholarly journals Effects of growth conditions on the microstructures and photoluminescence properties of Ga-doped ZnO films

2015 ◽  
Vol 64 (8) ◽  
pp. 087803
Author(s):  
Zhou Xiao-Hong ◽  
Yang Qing ◽  
Zou Jun-Tao ◽  
Liang Shu-Hua
2018 ◽  
Vol 15 (3) ◽  
pp. 218-223 ◽  
Author(s):  
T. Sreenivasulu Reddy ◽  
G. Phaneendra Reddy ◽  
K.T. Ramakrishna Reddy

Spray deposited Mo-doped zinc oxide (MZO) films were grown on glass substrates at different substrate temperatures (Ts)that varied in the range of 300°C-450 °C at aconstant Mo-doping concentration of 2 at. %.XRD spectra revealed better crystallinity of films prepared atTs400 °C. FTIR spectra showed the vibrational modes related toZn–O bonding.Photoluminescence spectra of MZO films showed a peakrelated toviolet emissionsbetween 400 nm and 420 nm. Electrical analysis showed n type semiconducting nature of the films and the films grown at Ts= 400 °C hadlow resistivity and high mobility.Adetailed analysis on theeffect of substrate temperatureon photoluminescence and electrical propertiesof MZO films wasdiscussed and reported.


Crystals ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 204 ◽  
Author(s):  
Xingyou Chen ◽  
Zhenzhong Zhang ◽  
Yunyan Zhang ◽  
Bin Yao ◽  
Binghui Li ◽  
...  

Nitrogen-doped ZnO thin films were grown on a-plane Al2O3 by plasma-assisted molecular beam epitaxy. Hall-effect measurements indicated that the nitrogen-doped ZnO films showed p-type behavior first, then n-type, with the growth conditions changing from oxygen-radical-rich to oxygen-radical-deficient ambience, accompanied with the increase of the N/O ratio in the plasmas. The increasing green emission in the low temperature photoluminescence spectra, related to single ionized oxygen vacancy in ZnO, was ascribed to the decrease of active oxygen atoms in the precursor plasmas. CN complex, a donor defect with low formation energy, was demonstrated to be easily introduced into ZnO under O-radical-deficient ambience, which compensated the nitrogen-related acceptor, along with the oxygen vacancy.


Laser Physics ◽  
2011 ◽  
Vol 21 (4) ◽  
pp. 790-795 ◽  
Author(s):  
L. S. Parshina ◽  
O. A. Novodvorsky ◽  
V. Ya. Panchenko ◽  
O. D. Khramova ◽  
Ye. A. Cherebilo ◽  
...  

2013 ◽  
Vol 549 ◽  
pp. 12-17 ◽  
Author(s):  
T. Terasako ◽  
Y. Ogura ◽  
S. Fujimoto ◽  
H. Song ◽  
H. Makino ◽  
...  

2015 ◽  
Vol 1805 ◽  
Author(s):  
Adrian Camacho-Berrios ◽  
Victor Pantojas ◽  
Wilfredo Otaño

ABSTRACTZnO thin films were deposited using the DC pulsed magnetron sputtering technique to study how composition and structure influences their magnetic properties. Low sputtering powers and high substrate temperatures were used to increase adatom mobility during deposition, resulting in increased crystallite size and reduced residual stress in the films. Another set of ZnO films were Mn-doped using a second magnetron gun and the amount of doping was changed by controlling the RF sputtering power. For these films, the crystallite size increased with the amount of Mn. The magnetic properties of these materials were counterintuitive; not intentionally doped ZnO showed the highest magnetization and magnetization decreased with increasing Mn concentration.


2004 ◽  
Vol 222 (1-4) ◽  
pp. 263-268 ◽  
Author(s):  
D.J Qiu ◽  
H.Z Wu ◽  
A.M Feng ◽  
Y.F Lao ◽  
N.B Chen ◽  
...  

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