由原子层沉积(Zn,Co)氧化物覆盖的ZnTe纳米线:拉曼散射研究

2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE) Pub Date : 2012-09-01 DOI:10.1109/OMEE.2012.6464852

K. Gas, E. Dynowska, M. Lukasiewicz, M. Wiater, B. Witkowski, E. Guziewicz, M. Godlewski, A. Kamińska, R. Hołyst, T. Wojtowicz, W. Szuszkiewicz

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引用次数: 0

摘要

采用微拉曼测量方法研究了原子层沉积(Zn,Co)氧化物外壳的分子束外延生长ZnTe纳米线(NWs)的振动特性。由于氧化壳层对NWs的过度生长，导致与NWs核相关的ZnTe和Te(沉淀)声子相关的结构相对强度显著降低。给出并讨论了拉曼光谱与激光功率的关系。结果表明，在测量过程中，增大激光功率可诱导非晶态氧化壳的结晶和Co3O4晶体的形成。

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ZnTe nanowires overgrown by atomic layer deposited (Zn,Co) oxides: Raman scattering studies

Micro-Raman measurements were performed to study the vibrational properties of molecular beam epitaxy grown ZnTe nanowires (NWs) with atomic layer deposited (Zn,Co) oxides shell. A significant decrease of relative intensity of structures related to the ZnTe (NWs core) and Te (precipitates) phonons, resulting from the overgrowth of the NWs by the oxide shells is observed. The dependence of the Raman spectra on the laser power is shown and discussed. It is demonstrated that the crystallization of amorphous oxide shell and formation of Co3O4 crystals can be induced by increasing laser power during the measurements.

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2012 IEEE International Conference on Oxide Materials for Electronic Engineering (OMEE)

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