Special Section on Advanced Fabrication of MEMS and Photonic Devices

Patterning of colloidal quantum dots for the generation of surface plasmon

[+] Author Affiliations
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

Samsung Advanced Institute of Technology, Frontier Research Lab, Yongin-si, Kyonggi-do 446-712, Republic of Korea

J. Micro/Nanolith. MEMS MOEMS. 12(4), 041202 (Sep 25, 2013). doi:10.1117/1.JMM.12.4.041202
History: Received March 11, 2013; Revised April 26, 2013; Accepted May 7, 2013
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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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© 2013 Society of Photo-Optical Instrumentation Engineers

Citation

Yeonsang Park ; Young-Geun Roh ; Un Jeong Kim ; Dae-Young Chung ; Hwansoo Suh, et al.
"Patterning of colloidal quantum dots for the generation of surface plasmon", J. Micro/Nanolith. MEMS MOEMS. 12(4), 041202 (Sep 25, 2013). ; http://dx.doi.org/10.1117/1.JMM.12.4.041202


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