Luminescence from Fluorescent Material Excited by Piezoelectric Transformer
Luminescence from Fluorescent Material Excited by Piezoelectric Transformer
复制标题
压电变压器激发荧光材料的发光
DOI：
10.1143/jjap.41.7160
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发表时间：
2002
影响因子：
1.5
通讯作者：
H. Itoh
中科院分区：
文献类型：
--
作者：
K. Teranishi;Susumu Suzuki;H. Itoh
本文描述了一种由压电变压器(PT)激发的荧光材料的发光现象。在一个腔内观察到荧光材料的光发射和氮气放电。荧光材料可以被氮气放电发出的紫外光或在PT产生的高电场中加速的快电子激发。为了弄清荧光材料的激发源，研究了两种荧光粉：锌锌粉和锌铜金粉在氮气放电中的发射光谱及其与气压的关系。利用电荷耦合器件(CCD)相机观测了这两种光发射的时间变化，以研究发光现象的动态行为。结果发现，在低气压条件下，快电子能激发出ZnO：Zn。在315~479 nm的紫外光激发下，ZNS：Cu，Au的激发光谱与ZNS：Cu，Au的激发光谱基本一致。阐明了荧光材料的激发过程。
This paper describes a luminous phenomenon of fluorescent materials excited by a piezoelectric transformer (PT). Light emission from fluorescent materials is observed together with N2 discharge in a chamber. The fluorescent materials may be excited by ultraviolet (UV) light which is emitted from the N2 discharge or fast electrons accelerated in high electric field generated by the PT. To clarify the excitation source of the fluorescent materials, emission spectra of the two kinds of phosphors, ZnO:Zn and ZnS:Cu,Au, in the N2 discharge and the gas pressure dependence are examined. Temporal variations of both light emissions are observed using a charged couple device (CCD) camera to investigate the dynamic behavior of the luminous phenomenon. As a result, it is found that ZnO:Zn is excited by fast electrons under low-pressure conditions. ZnS:Cu,Au is excited by UV light from 315 to 479 nm because the wavelength region is in good agreement with the excitation spectrum for ZnS:Cu,Au. The excitation process of fluorescent materials is clarified in this study.