Author Affiliations
Abstract
1 Information Engineering Institute, Zhejiang University of Technology, Hangzhou 310014
2 Department of Chemical Engineering, National University of Singapore, Singapore 119260
Three novel kinds of polymers containing rare earth europium have been synthesized and the integrating sphere technique was employed to measure the absolute photoluminescence (PL) efficiency. The PL efficiencies were found to be up to about 40%, which indicates the potential usage in organic light emitting devices (OLED). The energy transfer from ligand to Eu ions and the 5D0 -> 7F2 transition of Eu^(3+) were analyzed under the PL process.
250.5230 photoluminescence 250.3680 light-emitting polymers 310.6860 thin films optical properties Chinese Optics Letters
2005, 3(8): 08480
Author Affiliations
Abstract
1 College of Information Engineering, Zhejiang University of Technology, Hangzhou 310014
2 State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130022
It is important to predict the intensity distribution in focusing plane for designing the X-ray compound refractive lenses. On the basis of analyzing the structure of X-ray compound lenses and comparing it with Fraunhofer diffraction system, it is concluded that the X-ray focusing system can be regarded as a kind of Fraunhofer diffraction system. Therefore, a method based on Fourier spectrum analysis is presented to predict the intensity distribution in the focusing plane for the X-ray lenses. A brief analysis on the relationship between the parameters of X-ray lenses and their focusing performance is also given in this paper.
340.0340 X-ray optics 070.2590 Fourier transforms 050.1220 apertures Chinese Optics Letters
2004, 2(6): 06367
Zhejiang Provincial Key Lab. of Fiber Optic Communication Technology, Zhejiang University of Technology, Hangzhou 310032, P. R. China
