1. Directional emission of quantum dot scintillators controlled by photonic crystals.
- Author
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Bo Liu, Qiang Wu, Zhichao Zhu, Chuanwei Cheng, Mu Gu, Jun Xu, Hong Chen, Jinliang Liu, Liang Chen, Zhongbing Zhang, and Xiaoping Ouyang
- Subjects
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OPTICAL properties of quantum dots , *SCINTILLATORS , *PHOTONIC crystals , *EXCITATION spectrum , *TITANIUM dioxide , *QUANTUM dots - Abstract
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. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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