Directional emission of quantum dot scintillators controlled by photonic crystals
Directional emission of quantum dot scintillators controlled by photonic crystals
复制标题
光子晶体控制的量子点闪烁体的定向发射
DOI：
10.1063/1.4993816
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发表时间：
2017-08-21
影响因子：
4
通讯作者：
Ouyang, Xiaoping
中科院分区：
文献类型：
--
作者：
Liu, Bo;Wu, Qiang;Ouyang, Xiaoping
我们已经证明了增强的光发射从CdSe/ZnS量子点闪烁体薄膜在正常方向上的光子晶体结构。通过对光子晶体结构的控制，实现了紫外和X射线激发下波长积分发射光谱的2倍增强，有利于辐射探测应用。此外，它被发现，如带宽和峰值波长的光学特性可以通过调整的厚度的TiO 2共形层，这是沉积在由固化的抗蚀剂形成的光子晶体板的表面上进行控制。
We have demonstrated enhanced light emission from a CdSe/ZnS quantum dot scintillator film in the normal direction by photonic crystal structures. With the control of the photonic crystal structures, a two-fold enhancement was achieved for the wavelength-integrated emission spectra under the excitation of both ultra-violet and X-rays, which is beneficial to radiation detection applications. Furthermore, it is found that the optical properties such as the bandwidth and peak wavelength can be controlled by adjusting the thickness of a TiO2 conformal layer which was deposited on the surface of the photonic crystal slab formed from solidified resist.