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1. 北华大学 物理学院,吉林 吉林,132013
2. 吉林大学 物理学院,吉林 长春,130012
收稿日期:2013-10-20,
修回日期:2013-12-16,
纸质出版日期:2014-05-25
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高丽丽, 徐莹, 张淼等. Mg含量对N掺杂MgZnO薄膜的光电性能和N掺杂行为的影响[J]. 光学精密工程, 2014,22(5): 1198-1203
GAO LI-li, XU Ying, ZHANG Miao etc. Effects of Mg contents on photoelectric properties and N doped behaviors in N doped MgZnO fims[J]. Editorial Office of Optics and Precision Engineering, 2014,22(5): 1198-1203
高丽丽, 徐莹, 张淼等. Mg含量对N掺杂MgZnO薄膜的光电性能和N掺杂行为的影响[J]. 光学精密工程, 2014,22(5): 1198-1203 DOI: 10.3788/OPE.20142205.1198.
GAO LI-li, XU Ying, ZHANG Miao etc. Effects of Mg contents on photoelectric properties and N doped behaviors in N doped MgZnO fims[J]. Editorial Office of Optics and Precision Engineering, 2014,22(5): 1198-1203 DOI: 10.3788/OPE.20142205.1198.
利用射频磁控溅射技术,在相同流量的氮气、氩气混合气体条件下,在石英基片上溅射获得了不同Mg含量的N掺杂Mg
x
Zn
1-
x
O薄膜,并研究了Mg含量对N的掺杂行为和薄膜光电性能的影响。结果显示,在N掺杂Mg
x
Zn
1-
x
O薄膜中,随着Mg含量的增加,薄膜的电阻率增加,载流子浓度下降;X射线电子能谱中位于395eV左右的N
1s
峰强逐渐减弱、甚至消失;Raman光谱中与受主N
O
相关的位于272cm
-1
、642cm
-1
左右的振动峰也随之减弱、消失。得到的结果表明:在N和O的化学势相同的条件下,薄膜中Mg含量对N的掺杂行为有一定的影响,随着Mg含量的增加,受主N
O
的掺杂浓度降低,N的掺杂状态发生变化;N掺杂Mg
x
Zn
1-
x
O薄膜中Mg含量低时,存在N
O
与(N
2
)
O
两种状态;Mg含量高时,薄膜中只存在(N
2
)
O
一种形式。
N doped MgZnO films with different Mg contents were prepared on quartz substrates using mixed gases of 99.99% pure nitrogen and argon at the same flow by radio frequency magnetron sputtering technique
respectively. The effects of Mg content on the doping behavior of N and photoelectric properties of these films were studied. The experimental results indicate that the resistivity increases and the carrier concentration decreases for the films as the Mg content increases. In the X-ray Photoelectron Spectroscopy(XPS)
the N
1s
peak located near 395 eV is gradually weakened and even disappeared. In the Raman spectra
the peaks of the N for O site (N
O
) at 272 and 642 cm
-1
are also weakened and disappeared with the Mg content increasing. It can be concluded that the doping behavior of N is dominated by the Mg content when N and O are at the same chemical potential in the experiment. With the Mg content increasing
the doping concentration of N for O site (N
O
) decreases and the chemical state of N is changed. In the film with a low Mg content
N for O site (N
O
) and N
2
for O site (N
2
)
O
are coexist
but in the film with a high Mg content
only (N
2
)
O
exists.
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