(393au) Enhancing Photoluminescence Intensity of Quantum Dots in Polymer Matrix by Using Hollow Silica Particles

Enhancing
photoluminescence intensity of quantum dots in polymer matrix by using hollow
silica particles

Hyun Chang Kim¹, Taegyeong
Kang¹, Cheolsang Yoon¹, Hyun-Guk
Hong², Young-Joo Kim², and Kangtaek Lee¹

¹Department
of Chemical and Biomolecular Engineering, Yonsei University

²Department
of Mechanical Engineering, Yonsei University

ABSTRACT

Achieving high
photoluminescence intensity of quantum dots in polymer matrix is of interest in
display field. In this study, we improve dispersion of quantum dots in polymer
matrix, and subsequently enhance the photoluminescence intensity by encapsulating
a homogeneous quantum dot layer at a radial equidistance on silica
nanoparticle. Previous studies on encapsulation of quantum dots on silica
nanoparticle were conducted in aqueous phase, which exhibited substantially
lower photoluminescence intensity and stability than in organic phase. A new
method of encapsulating quantum dots from organic phase onto silica particles
is introduced, and to further increase the photoluminescence intensity, hollow
silica nanoparticles are used. Hollow silica particles have higher transparency
than silica particles, and should increase the photoluminescence intensity of
the encapsulating quantum dots more significantly due to their unique near
field optics and light trapping properties.

Keywords: Materials, Nanotechnology, Hollow Silica, Polymer
Film, and Quantum dot