期刊
MATERIALS RESEARCH EXPRESS
卷 2, 期 7, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/2053-1591/2/7/075013
关键词
-
资金
- UGC, New Delhi [F.2-61/98]
- CSIR-NanoSHE project [BSC-0112]
Herein, we have investigated the various characteristics of two structurally different phases of Al2O3 nanowires: (i) gamma-Al2O3 (cubic) and (ii) gamma-Al2O3 (monoclinic). These nanowires were synthesized via hydrothermal treatment followed by calcination. The structural and luminescent properties were analyzed by scanning electron microscopy, high-resolution transmission electron microscopy and time-resolved photoluminescence spectroscopy. A plausible formation mechanism was proposed on the basis of experimental observations and analysis. These nanowires of both phases exhibit blue emission at similar to 466 nm (2.65 eV) upon 253 nm UV excitation wavelength. The time-resolved photoluminescence spectroscopy indicated that the decay time (tau) of theta-Al2O3 nanowires (tau = 273 picoseconds) is longer than that of gamma-Al2O3 nanowires (tau = 198 picoseconds). Moreover, these Al2O3 nanowires were dispersed in ferroelectric liquid crystal (FLC) to observe their effect on the electrooptical characteristics. The electro-optical response of the composite devices showed faster electrooptical response, thereby suggesting potential applications in electro-optical shutters and modulators.
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