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美國布魯克海文儀器公司>技術(shù)文章>Improving the luminescence performance of quantum dot-based photonic crystals for white-light emissi

技術(shù)文章

Improving the luminescence performance of quantum dot-based photonic crystals for white-light emissi

閱讀:320          發(fā)布時(shí)間:2016-9-6

文獻(xiàn)名: Improving the luminescence performance of quantum dot-based photonic crystals for white-light emission

 

作者 Heng Li,a   Zhaohua Xu,a   Bin Bao,b   Ning Suna and   Yanlin Songb

a Department of Material Technology, Jiangmen Polytechnic, Jiangmen, China

b Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Green Printing, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China

 

摘要:A very bright white light is fabricated by combining the advantages of red, green and blue (RGB) QDs with photonic crystal (PC) structures. The results show that the intensity of RGB emission on the PCs can be up to about 8-fold enhanced in comparison to that of the control sample because of the high reflectivity in the UV region of the PC structures, which possess a stopband centered at 366 nm to match an excitation source. Furthermore, the chromaticity coordinates of the RGB film with the PC structure remain almost unchanged, close to pure white light. Introducing the PCs into the white light fabrication process has improved not only the dispersion of QDs due to large surface-to-volume ratios of the inverse opal structures, but also the luminous intensity of the white light resulting from effective light-extraction by the PCs. The approach provides a promising strategy for developing an optical device with high performance.

 

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