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Color Imaging via Nearest Neighbor Hole Coupling in Plasmonic Color Filters Integrated onto a Complementary Metal-Oxide Semiconductor Image Sensor

Burgos, Stanley P. and Yokogawa, Sozo and Atwater, Harry A. (2013) Color Imaging via Nearest Neighbor Hole Coupling in Plasmonic Color Filters Integrated onto a Complementary Metal-Oxide Semiconductor Image Sensor. ACS Nano, 7 (11). pp. 10038-10047. ISSN 1936-0851. doi:10.1021/nn403991d. https://resolver.caltech.edu/CaltechAUTHORS:20131204-082828328

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Abstract

State-of-the-art CMOS imagers are composed of very small pixels, so it is critical for plasmonic imaging to understand the optical response of finite-size hole arrays and their coupling efficiency to CMOS image sensor pixels. Here, we demonstrate that the transmission spectra of finite-size hole arrays can be accurately described by only accounting for up to the second nearest-neighbor scattering-absorption interactions of hole pairs, thus making hole arrays appealing for close-packed color filters for imaging applications. Using this model, we find that the peak transmission efficiency of a square-shaped hole array with a triangular lattice reaches 90% that of an infinite array at an extent of ~6 × 6 μm^2, the smallest size array showing near-infinite array transmission properties. Finally, we experimentally validate our findings by investigating the transmission and imaging characteristics of a 360 × 320 pixel plasmonic color filter array composed of 5.6 × 5.6 μm^2 RGB color filters integrated onto a commercial black and white 1/2.8 in. CMOS image sensor, demonstrating full-color high resolution plasmonic imaging. Our results show good color fidelity with a 6-color-averaged color difference metric (ΔE) in the range of 16.6–19.3, after white balancing and color-matrix correcting raw images taken with f-numbers ranging from 1.8 to 16. The integrated peak filter transmission efficiencies are measured to be in the 50% range, with a FWHM of 200 nm for all three RGB filters, in good agreement with the spectral response of isolated unmounted color filters.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/nn403991dDOIArticle
http://pubs.acs.org/doi/abs/10.1021/nn403991dPublisherArticle
ORCID:
AuthorORCID
Atwater, Harry A.0000-0001-9435-0201
Additional Information:© 2013 American Chemical Society. Received for review July 31, 2013 and accepted October 24, 2013. Published online October 24, 2013. The authors gratefully acknowledge critical support and infrastructure provided by the Kavli Nanoscience Institute at Caltech. S. Burgos appreciatively acknowledges support from the National Science Foundation Graduate Fellowship. This work was supported by the Air Force Office of Scientific Research under a Multidisciplinary University Research Initiative grant FA9550-10-1-0264 and under grant FA9550-09-1-0673.
Funders:
Funding AgencyGrant Number
NSF Graduate Research FellowshipUNSPECIFIED
Air Force Office of Scientific Research (AFOSR)FA9550-10-1-0264
Air Force Office of Scientific Research (AFOSR)FA9550-09-1-0673
Subject Keywords:CMOS image sensor; hole array color filter
Issue or Number:11
DOI:10.1021/nn403991d
Record Number:CaltechAUTHORS:20131204-082828328
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20131204-082828328
Official Citation: Color Imaging via Nearest Neighbor Hole Coupling in Plasmonic Color Filters Integrated onto a Complementary Metal-Oxide Semiconductor Image Sensor Stanley P. Burgos, Sozo Yokogawa, and Harry A. Atwater ACS Nano 2013 7 (11), 10038-10047
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:42815
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:04 Dec 2013 17:41
Last Modified:10 Nov 2021 16:28

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