Directional emission of quantum dot scintillators controlled by photonic crystals

被引：18
|
作者：
Liu, Bo [1 ]
Wu, Qiang [1 ]
Zhu, Zhichao [1 ]
Cheng, Chuanwei [1 ]
Gu, Mu [1 ]
Xu, Jun [1 ]
Chen, Hong [1 ]
Liu, Jinliang [2 ,3 ]
Chen, Liang [2 ,3 ]
Zhang, Zhongbing [2 ,3 ]
Ouyang, Xiaoping [2 ,3 ,4 ]
机构：
[1] Tongji Univ, Sch Phys Sci & Engn, Shanghai Key Lab Special Artificial Microstruct M, Shanghai 200092, Peoples R China
[2] Northwest Inst Nucl Technol, State Key Lab Intense Pulsed Radiat Simulat & Eff, Xian 710024, Shaanxi, Peoples R China
[3] Northwest Inst Nucl Technol, Radiat Detect Res Ctr, Xian 710024, Shaanxi, Peoples R China
[4] Xijing Univ, Shaanxi Engn Res Ctr Pulse Neutron Source & Its A, Xian 710123, Shaanxi, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2017年 / 111卷 / 08期
基金：
中国国家自然科学基金;
关键词：
HIGH EXTRACTION EFFICIENCY; ATOMIC LAYER DEPOSITION; LYSO SCINTILLATOR; LIGHT EXTRACTION; ENHANCEMENT; SURFACE;
D O I：
10.1063/1.4993816
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
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. Published by AIP Publishing.
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页数：5
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