Enhancing the Responsivity of Uncooled Infrared Detectors Using Plasmonics for High-Performance Infrared Spectroscopy

Ahmed, Amr; Kim, Hye Jin; Kim, Jinsik; Hwang, Kyo Seon; Kim, Seonghwan

doi:10.20944/preprints201703.0054.v1

Cited by 3 publications

(1 citation statement)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is worth pointing out that this perforated metal film structure unconditionally needs to play with the quantum dots (QDs)-based IR detectors [ 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 ] for spectral-shaping and photocurrent enhancement, which is caused by the anisotropic dielectric constants of the active layer, specifically, the different absorption efficiencies of active layer into x - or y -direction (lying in the plane of perforated metal film) and z -direction (along the growth direction) [ 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 ]. It is also worth referring to research on a hybrid device consisting of artificial structure and thermal detector (that can operate at or even above room temperature without cryogenic cooling), which has seen impressive growth, exhibiting the spectral selectivity at the desired wavelength [ 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 ]. Over the past years, there have been experimental efforts to demonstrate the change of peak wavelength photoresponse at a fixed bias by structural tuning of plasmonic structure (e.g., periodicity or aperture size) [ 38 , 43 , 44 , 45 ].…”

Section: Introductionmentioning

confidence: 99%

Plasmonic-Layered InAs/InGaAs Quantum-Dots-in-a-Well Pixel Detector for Spectral-Shaping and Photocurrent Enhancement

Hwang

Jeon

et al. 2020

Nanomaterials

View full text Add to dashboard Cite

The algorithmic spectrometry as an alternative to traditional approaches has the potential to become the next generation of infrared (IR) spectral sensing technology, which is free of physical optical filters, and only a very small number of data are required from the IR detector. A key requirement is that the detector spectral responses must be engineered to create an optimal basis that efficiently synthesizes spectral information. Light manipulation through metal perforated with a two-dimensional square array of subwavelength holes provides remarkable opportunities to harness the detector response in a way that is incorporated into the detector. Instead of previous experimental efforts mainly focusing on the change over the resonance wavelength by tuning the geometrical parameters of the plasmonic layer, we experimentally and numerically demonstrate the capability for the control over the shape of bias-tunable response spectra using a fixed plasmonic structure as well as the detector sensitivity improvement, which is enabled by the anisotropic dielectric constants of the quantum dots-in-a-well (DWELL) absorber and the presence of electric field along the growth direction. Our work will pave the way for the development of an intelligent IR detector, which is capable of direct viewing of spectral information without utilizing any intervening the spectral filters.

show abstract

Section: Introductionmentioning

confidence: 99%

Plasmonic-Layered InAs/InGaAs Quantum-Dots-in-a-Well Pixel Detector for Spectral-Shaping and Photocurrent Enhancement

Hwang

Jeon

et al. 2020

Nanomaterials

View full text Add to dashboard Cite

show abstract

Pyroelectric Properties and Applications of Lithium Tantalate Crystals

Si,

Xiao,

Zhang

et al. 2024

Crystals

View full text Add to dashboard Cite

Lithium tantalate crystals, as a type of pyroelectric material, stand out from many other pyroelectric materials due to the advantages of high Curie temperature, large pyroelectric coefficient, high figure of merits, and environmental friendliness. Due to the pyroelectric effect caused by their spontaneous polarization, lithium tantalate crystals have broad application prospects in wide spectral bandwidth and uncooled pyroelectric detectors. This article reviews the pyroelectric properties of lithium tantalate crystals and evaluates methods for pyroelectric properties, methods for modulating pyroelectric properties, and pyroelectric detectors and their applications. The prospects of lithium tantalate thin films, doped lithium tantalate crystals, and near stoichiometric lithium tantalate crystals as response components for pyroelectric detectors are also discussed.

show abstract

MEMS-Based Wavelength-Selective Bolometers

et al. 2019

View full text Add to dashboard Cite

We propose and experimentally demonstrate a compact design for membrane-supported wavelength-selective infrared (IR) bolometers. The proposed bolometer device is composed of wavelength-selective absorbers functioning as the efficient spectroscopic IR light-to-heat transducers that make the amorphous silicon (a-Si) bolometers respond at the desired resonance wavelengths. The proposed devices with specific resonances are first numerically simulated to obtain the optimal geometrical parameters and then experimentally realized. The fabricated devices exhibit a wide resonance tunability in the mid-wavelength IR atmospheric window by changing the size of the resonator of the devices. The measured spectral response of the fabricated device wholly follows the pre-designed resonance, which obviously evidences that the concept of the proposed wavelength-selective IR bolometers is realizable. The results obtained in this work provide a new solution for on-chip MEMS-based wavelength-selective a-Si bolometers for practical applications in IR spectroscopic devices.

show abstract

Enhancing the Responsivity of Uncooled Infrared Detectors Using Plasmonics for High-Performance Infrared Spectroscopy

Cited by 3 publications

References 20 publications

Plasmonic-Layered InAs/InGaAs Quantum-Dots-in-a-Well Pixel Detector for Spectral-Shaping and Photocurrent Enhancement

Plasmonic-Layered InAs/InGaAs Quantum-Dots-in-a-Well Pixel Detector for Spectral-Shaping and Photocurrent Enhancement

Pyroelectric Properties and Applications of Lithium Tantalate Crystals

MEMS-Based Wavelength-Selective Bolometers

Contact Info

Product

Resources

About