Patterning of colloidal quantum dots for the generation of surface plasmon

Yeonsang Park; Young-Geun Roh; Un Jeong Kim; Dae-Young Chung; Hwansoo Suh; Jineun Kim; Sangmo Cheon; Jaesoong Lee; Tae-Ho Kim; Kyung-Sang Cho; Chang-Won Lee

doi:10.1117/1.JMM.12.4.041202

25 September 2013 Patterning of colloidal quantum dots for the generation of surface plasmon

Yeonsang Park, Young-Geun Roh, Un Jeong Kim, Dae-Young Chung, Hwansoo Suh, Jineun Kim, Sangmo Cheon, Jaesoong Lee, Tae-Ho Kim, Kyung-Sang Cho, Chang-Won Lee

Author Affiliations +

Journal of Micro/Nanolithography, MEMS, and MOEMS, Vol. 12, Issue 4, 041202 (September 2013). https://doi.org/10.1117/1.JMM.12.4.041202

Abstract

Patterning of colloidal quantum dot (QD) of a nanometer resolution is important for potential applications in micro- or nanophotonics. Several patterning techniques such as polymer composites, molecular key-lock methods, inkjet printing, and the microcontact printing of QDs have been successfully developed and applied to various plasmonic applications. However, these methods are not easily adapted to conventional complementary metal-oxide semiconductor (CMOS)-compatible processes because of either limits in fabrication resolutions or difficulties in sub-100-nm alignment. Here, we present an adaptation of a conventional lift-off method for the patterning of colloidal QDs. This simple method can be later applied to CMOS processes by changing electron beam lithography to photolithography for building up photon-generation elements in various planar geometries. Various shapes formed by colloidal QD clusters such as straight lines, rings, and dot patterns with sub-100-nm size could be fabricated. The patterned structures show sub-10-nm positioning with good fluorescence properties and well-defined sidewall profiles. To demonstrate the applicability of our method, we present a surface plasmon generator from a QD cluster.

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Yeonsang Park, Young-Geun Roh, Un Jeong Kim, Dae-Young Chung, Hwansoo Suh, Jineun Kim, Sangmo Cheon, Jaesoong Lee, Tae-Ho Kim, Kyung-Sang Cho, and Chang-Won Lee "Patterning of colloidal quantum dots for the generation of surface plasmon," Journal of Micro/Nanolithography, MEMS, and MOEMS 12(4), 041202 (25 September 2013). https://doi.org/10.1117/1.JMM.12.4.041202

Published: 25 September 2013

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