Investigation of the geometrical effect on photoelectric properties of nano-ZnO with doped liquid crystal technique

Investigation of the geometrical effect on photoelectric properties of nano-ZnO with doped liquid crystal technique
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掺杂液晶技术研究几何效应对纳米ZnO光电性能的影响

DOI:
10.1007/s00339-012-6961-z
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发表时间:
2012-05
期刊:
Applied Physics A-Materials Science & Processing
影响因子:
--
通讯作者:
Song, Yi-Wu
Song, Yi-Wu
中科院分区:
其他
文献类型:
--
作者:
She, Guang-Quan;Liu, Yi-Kun;Chen, Yong-Hai;Guo, Yu-Bing;Xu, Ming-Ya;Ding, Zhen;Xia, Tian;Wang, Jia-Hui;Song, Yi-Wu

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我们证明了纳米氧化锌(ZnO)对向列相液晶(LC)电光响应的几何效应。实验结果表明,各向异性几何(纳米棒状)ZnO会显著增强基体LC的光折变效应,而各向同性几何(纳米颗粒)ZnO则没有这种效应。借助光致发光光谱和光电流测量,我们进一步证明了掺杂剂的几何形状对光电子产率的决定作用。这些结果对纳米氧化锌的纳米技术应用具有一定的指导意义。
We demonstrated the geometrical effect of nano zinc-oxide (ZnO) on the electro-optical response of a nematic liquid crystal (LC). The experimental results indicated that anisotropic geometrical (nano-rod) ZnO will markedly enhance the photo-refractive effects of host LC, whereas isotropic geometrical (nano-particle) ZnO possess no such effects at all. With the help of photoluminescence spectra and photo-current measurement, we further prove that the geometries of dopants play decisive roles in determining the yield of photo-electron. These results are useful to the nano-technology application of nano-ZnO.
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