DocumentCode :
3351420
Title :
Semiconductor quantum-dot photonic crystals
Author :
Vlasov, Yu.A. ; Yao, Ning ; Norris, David J.
Author_Institution :
NEC Res. Inst., Princeton, NJ, USA
fYear :
1992
fDate :
23-28 May 1992
Firstpage :
255
Lastpage :
256
Abstract :
Summary form only given. We show how to use self-organization to make three-dimensional semiconductor photonic crystals operating at optical wavelengths. Our approach combines colloidal chemistry with two steps of hierarchical self-assembly. First monodisperse submicron silica spheres slowly settle onto a flat substrate and self-organize as a (mostly) face-centered cubic (fcc) lattice that is periodic on an optical length scale. Second, this template serves as a three-dimensional scaffolding for the self-assembly of nanometer-scale CdSe colloidal quantum dots. Subsequently, the silica template is removed by selective etching and a three-dimensionally patterned material consisting solely of densely-packed semiconductor quantum dots is obtained. Therefore, the exact three-dimensional structure of the template is imprinted in the final material.
Keywords :
II-VI semiconductors; cadmium compounds; nanostructured materials; photonic band gap; self-assembly; semiconductor quantum dots; 3D semiconductor photonic crystals; CdSe; colloidal chemistry; flat substrate; hierarchical self-assembly; monodisperse submicron silica spheres; nanometer scale colloidal quantum dots; periodic FCC lattice; selective etching; self-organization; semiconductor quantum-dot photonic crystals; three-dimensional scaffolding; Chemistry; Etching; Lattices; Optical materials; Photonic crystals; Quantum dots; Self-assembly; Semiconductor materials; Silicon compounds; Substrates;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Quantum Electronics and Laser Science Conference, 1999. QELS '99. Technical Digest. Summaries of Papers Presented at the
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-576-X
Type :
conf
DOI :
10.1109/QELS.1999.807637
Filename :
807637
Link To Document :
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