| 田会娟.纳米ZnO的形貌、光致发光性质及反应气浓度分布的研究[J].唐山学院学报,2017,30(3):27-30,44 |
| 纳米ZnO的形貌、光致发光性质及反应气浓度分布的研究 |
| A Study on the Morphology,Photoluminescence of Nanometer ZnO and Gas Concentration Distribution |
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| DOI：10.16160/j.cnki.tsxyxb.2017.03.006 |
| 中文关键词: 纳米氧化锌 浓度场 实验和模拟 双管管式炉 |
| 英文关键词: nanometer ZnO concentration field experiment and simulation double tube furnace |
| 基金项目:唐山学院博士创新基金资助项目（tsxybc201404） |
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| 中文摘要: |
| 采用化学气相沉积的实验方法，以纯Zn粉为锌源，O2为反应气，N2为载气，在双管管式炉内制备了多脚结构的纳米ZnO，研究了载气流量对产物形貌和光致发光性能的影响；通过计算流体动力学软件FLUENT对实验条件下管式炉内O2和Zn蒸汽的浓度分布进行了模拟。实验和模拟结果表明：随着N2流量的增大，O2浓度减小，产物由钉状多脚结构向针状多脚结构转变；沉积位置处Zn蒸汽的浓度远大于O2浓度，绿光发射峰主要是由ZnO纳米晶体氧空位引起的，沉积反应主要由O2控制。 |
| 英文摘要: |
| The author of this paper has prepared nanometer ZnO in the double tube furnace by chemical vapor deposition(CVD), with pure zinc powder as a source of zinc, O2 as a reaction gas and N2 as a carrier gas, and studied the effect of carrier gas flow rate on the morphology and photoluminescence of the produced nanometer ZnO. The concentration distribution of O2 and Zn vapor was simulated with FLUENT. The experiment and simulation results show that with the increase of N2 flow rate, O2 concentration decreases, and the products changes from the nail-like multi-foot structure to the needle-like multi-foot structure; the concentration of Zn vapor at the deposition site is much larger than that of O2, the green emission peak is caused mainly by the vacancy of ZnO nanocrystals, and the deposition reaction is controlled mainly by O2. |
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