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논문 기본 정보

자료유형
학술저널
저자정보
Guishan Liu (Dalian Polytechnic University)
저널정보
성균관대학교 성균나노과학기술원 NANO NANO Vol.11 No.2
발행연도
2016.1
수록면
95 - 101 (7page)

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Ordered ZnO arrays with a peculiar nanostructure were synthesized by a multistep synthesis process. The first step was the preparation of ZnO seed to induce the formation of ZnO array via potentiostatic electrodeposition method using a typical three electrode set-up. The second step was fabricating ZnO array along seed by Chemical Bath Deposition. Structural analysis of ZnO was carried out with X-ray diffraction (XRD), which showed a hexagonal wurtzite structure, and the selected area electron diffraction (SAED) patterns indicated that nanocrystalline is a part of monocrystal. The scanning electron microscope (SEM) and transmission electron microscope (TEM) were used to study the microstructure, and showed a pagoda-like microstructure with a tiny top and large bottom, which had an average top diameter of exceeding 800 nm at seeddepositing time of 60 s, and then growth mechanisms are subsequently given a further explanation, viewed from kinetics and thermodynamics. In addition, the current–voltage curves of schottky diode devices with ZnO nanopagoda arrays revealed that ZnO films arrays along grown ZnO seed had a higher reverse saturation current than ZnO films grown without seed, which are 1.48 x 10-6 A and 1.32 x 10-8 A, respectively. The minimum turn-on voltage of the diode with ZnO seed deposited 60 s is 0.18 V, without seed is 0.52 V.

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