Synthesis and Characterization of Well-Aligned P-Doped Zinc Oxide Nanowires

高準直性磷摻雜氧化鋅奈米線的合成及特性研究

林強(Lin, Chiang)

指導教授 ： 周立人

國立清華大學/工學院/材料科學工程學系/碩士(2010年)

摘要

In this thesis, phosphorus-doped ZnO nanowires were grown on silicon substrate using chemical vapor transport and condensation process using zinc phosphide (Zn3P2) as the dopant source. Besides, single-crystal P-doped ZnO nanowires have their growth axis along with the <001> direction and form well-aligned arrays on Si substrate. Optimum process parameters of fabricating P-doped ZnO nanowires were proposed including growth temperature, weight of ZnO/C source, and growth time duration.
Characterization and analysis of P-doped ZnO nanowires were discussed with many analytic techniques. EDX spectrum shows that the P atom ratio in the ZnO nanowire is approximately 0.8%. XPS spectrum shows that the peak related to the P (2p) is observed located at 133.3 eV, which could be regarded as P-O bonding state. PL spectra indicate the existence of PZn-2VZn complex defect in the P-doped ZnO nanowires, which is suggested to be the acceptor responsible for the p-type conduction. Furthermore, Single-NW-based field-effect transistors were used to study the electrical transport properties of nanowires.

關鍵字

氧化鋅 ； 磷摻雜 ； p-型

並列摘要

無資料

並列關鍵字

ZnO ； P-doped ； p-type

參考文獻

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