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Properties of ZnO thin films grown on Si substrates by MOCVD and ZnO/Si heterojunctions
被引:44
作者:
Zhang, YT
[1
]
Du, GT
[1
]
Zhang, BL
[1
]
Cui, YG
[1
]
Zhu, HC
[1
]
Chang, YC
[1
]
机构:
[1] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China
关键词:
D O I:
10.1088/0268-1242/20/11/006
中图分类号:
TM [电工技术];
TN [电子技术、通信技术];
学科分类号:
0808 ;
0809 ;
摘要:
Undoped n-ZnO thin films were successfully grown on p-Si (100) substrates by low-pressure metalorganic chemical vapour deposition (MOCVD). The c-axis oriented ZnO films were grown on Si at different temperatures using diethylzinc (DEZn) and oxygen (O-2). The structural and optical properties of ZnO films were investigated using x-ray diffraction (XRD) and photoluminescence (PL) spectra, respectively. It is found that the ZnO film grown at 610 C shows the best crystallinity and optical quality. Current-voltage (I-V) characteristics of all n-ZnO/p-Si heterojunctions exhibit nonlinear and rectifying characteristics with a small current leakage in the reverse direction. Junction leakage of the heterojunction deposited at 620 degrees C is higher than those of the other heterojunctions.
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页码:1132 / 1135
页数:4
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