Abstract
Photoluminescence quantum dots (QDs) have been considered as a kind of promising light converting materials with high luminous efficiency, tunable spectrum, and narrow emission. However, the current light conversion efficiency (LCE) of QD films is at a relative low level, which will result in many problems, such as inferior luminous performance, severe self-heating, etc. To enhance the LCE of QD films, SiO2 particles were doped into QD films by physical blending, for their remarkable light scattering effect. The LCE enhancement after adding SiO2 particles were studied by experiments. Experimental results showed that the SiO2 modified QD films improved the LCE up to 63.45%, which was 103.88% higher than conventional QD films. Besides, as the SiO2 particles diameters increased, the optimal mass fractions of SiO2 particles for top LCE would decrease.
© 2016 IEEE
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