Simple method to fabricate large scale quantum dot architectures

We present a facile method of incorporating CdSe/ZnSe core/shell quantum dots (QDs) into 600 nm diameter pores of a two-dimensional lattice made by interference lithography of spin-coated SU-8 photoresist on Si substrates. The luminescent assembly can be formed in an area as large as 1 cm 2. Confoca...

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Bibliographic Details
Published in:Materials letters 2009-02, Vol.63 (5), p.563-565
Main Authors: Lu, Cheng, Zhou, Jigang, Lipson, R.H., Ding, Zhifeng
Format: Article
Language:English
Subjects:
Confocal microscopy
Laser processing
Luminescence
Quantum dot arrays
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Summary:We present a facile method of incorporating CdSe/ZnSe core/shell quantum dots (QDs) into 600 nm diameter pores of a two-dimensional lattice made by interference lithography of spin-coated SU-8 photoresist on Si substrates. The luminescent assembly can be formed in an area as large as 1 cm 2. Confocal luminescence microscopy shows that the QDs can readily fill via capillary action into hexagonal hole arrays with a depth of about 3 µm and a periodicity of about 1 µm. The fabricated large scale architectures are expected to be useful for optical devices such as light emitting diodes.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2008.11.038