期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 113, 期 10, 页码 4042-4046出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp809458j
关键词
-
资金
- National Science Council of Taiwan [NSC94-2216E-027-008, NSC95-2216-E-027-009]
In the present research, tungsten oxide nanorod bundles were synthesized by a unique plasma arc gas condensation method that was both noncatalytic and template-free. W18O49 nanorod bundles were prepared by directly evaporating tungsten bulk in an oxygen-deficient environment. The as-prepared tungsten oxide nanorod bundles were characterized by FESEM, HRTEM, XRD, UV-visible spectroscopy, and PL measurements. The field-emission property was also evaluated. FESEM images showed bundlelike morphology; XRD and HRTEM results confirmed that the nanorod bundles were in a single-crystalline monoclinic W18O49 phase, with the growth direction along [010]. Also, oxygen deficiencies within the nanostructures induced the red-shift phenomenon and blue emission observed in the UV-visible and photoluminescence spectra. The field-emission measurement showed that the tungsten oxide nanorod bundles exhibited low turn-on and threshold voltages, which were about 3.5 and 4.6 V/mu m, respectively. These results indicate that the tungsten oxide nanorod bundles are a promising candidate for field-emitter applications.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据