Tunable ultraviolet emission of ZnO quantum dots in transparent poly(methyl methacrylate) Academic Article

abstract

• We report experimental results on tuning ultraviolet (UV) emissions of colloidal ZnO quantum dots (QDs) with uniform size in poly(methyl methacrylate) (PMMA) through controlling their dispersion. Instead of using organic ligands, exfoliated nanoplatelets were utilized as an inorganic dispersant to achieve controlled aggregate sizes of ZnO QDs in PMMA. The polymer nanocomposites are highly transparent in the visible range and readily exhibit blueshifted UV luminescence as the aggregate size of ZnO QDs reduces. The mechanisms responsible for the observed dispersion-dependent UV emissions are also described. The above approach presents an alternative way to design inorganic/organic hybrids with desired physical properties.

authors

• Sue, Hung-Jue

published proceedings

• APPLIED PHYSICS LETTERS

author list (cited authors)

• Sun, D., & Sue, H.

citation count

• 28

complete list of authors

• Sun, Dazhi||Sue, Hung-Jue

publication date

• June 2009

publisher

• AIP Publishing  Publisher

published in

• Applied Physics Letters  Journal

keywords

• Aggregates (materials)
• Colloids
• Filled Polymers
• II-VI Semiconductors
• Nanocomposites
• Photoluminescence
• Semiconductor Quantum Dots
• Wide Band Gap Semiconductors
• Zinc Compounds

Digital Object Identifier (DOI)

• 10.1063/1.3156865

start page

• 253106

volume

• 94

issue

• 25

URL

• http://dx.doi.org/10.1063/1.3156865