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Influence of passivation layer on plasmonic infrared filter for image sensors

Influence of passivation layer on plasmonic infrared filter for image sensors
Lyu, Hong KunPark, Young JinCho, Hui SupJo, Sung HyunLee, Hee HoShin, Jang Kyoo
DGIST Authors
Lyu, Hong KunCho, Hui Sup
Issued Date
Article Type
Conference Paper
Ambient LightAmbient Light ErrorsBandpass FiltersColor FiltersColor Image ProcessingDual-Band InfraredDual-Band Infrared (IR) Image SensorsFdtd MethodFinite Difference Time Domain MethodImage SensorsInfrared DetectorsInfrared DevicesInfrared ImagingInteractive DisplayLight TransmissionMetal GratingMulti-Touch Interactive DisplaysPassivationPlasmonic Color FiltersPlasmonsSpeed ControlSub-Wavelength Metal GratingsTime Domain Analysis
We report the influence of a cover passivation layer on a plasmonic infrared filter for image sensors and the proper dimensions of a plasmonic dual-band infrared filter. We simulated the spectral variation in light transmission using a few important parameters: the metal thickness, the aperture pitch, the aperture diameter, and three different conditions of the structure's cover passivation layer. For this implementation, we used a commercial computer simulation tool utilizing the finite-difference time-domain method. Moreover, we explain briefly the mechanism of an active-type dual-band infrared image sensor and also a large-area multi-touch display using an optical camera module into which the plasmonic dual-band infrared filter is integrated to decrease touch recognition errors. Based on the results of the computer simulation, we identified two necessary conditions for the plasmonic dual infrared band pass filter. We expect that a plasmonic infrared band pass filter could be realized using a simple insulator/metal/insulator structure. Copyright © 2015 American Scientific Publishers All rights reserved.
American Scientific Publishers
Related Researcher
  • 류홍근 Lyu, Hong-Kun 전자정보시스템연구부
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Intelligent Devices and Systems Research Group 1. Journal Articles


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