Backside-configured surface plasmonic structure with over 40 times photocurrent enhancement

Gu, Guiru; Vaillancourt, Jarrod; Vasinajindakaw, Puminun; Lu, Xuejun

doi:10.1088/0268-1242/28/10/105005

Cited by 47 publications

(33 citation statements)

References 19 publications

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“…The metallic 2DSHA structure [18] is one of the commonly used plasmonic structures for performance enhancement in infrared photodetectors [8,[10][11][12]. Figure 2 shows a schematic structure with the light incident scheme of the metallic 2DSHA array structure.…”

Section: Nanoplasmonics -Fundamentals and Applicationsmentioning

confidence: 99%

“…λ ¼ 7:6 µm), the E-fields are strongly confined near the surface. Such strong surface confinement of plasmonic waves enables high absorption using a thin absorption layer and thus leads to significant enhancement in quantum dot infrared photodetectors (QDIPs) [8,[10][11][12][13]15]. In the following sections, we will first give a brief introduction of QDIPs, followed by the description of surface plasmonic enhancement in QDIPs.…”

Section: Nanoplasmonics -Fundamentals and Applications 202mentioning

confidence: 99%

“…Surface confinement of plasmonic waves enables high absorption using a thin absorption layer and thus leads to significant enhancement in QDIPs [8, 10-1 3 ,1 5 ] .W eh a v ed e v e l o p e da backside-configured plasmonic enhancement technology by fabricating the 2DSHA plasmonic structures on top of a QDIP and illuminating the QDIP from the opposite side of the plasmonic structure (i. e. backside illumination) [12]. Reproduced with permission from Ref.…”

Section: Backside Configured 2dsha-enhanced Qdipsmentioning

confidence: 99%

“…The backside-configured plasmonic structure can induce stronger E-field at the interface and therefore can provide larger plasmonic enhancement [12].…”

Section: Backside Configured 2dsha-enhanced Qdipsmentioning

confidence: 99%

“…In addition to SERS, the SPR enhancement technology also provides a promising technique to concentrate EM energy on surface area and thus enables high quantum efficiency with a thin active absorption layer in a photodetector. Significant performance enhancements in a quantum dot infrared photodetector (QDIP) have been reported [8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

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Surface Plasmonics and Its Applications in Infrared Sensing

Gu¹,

Lu²,

Kemsri³

et al. 2017

Nanoplasmonics - Fundamentals and Applications

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Surface plasmonic waves have been extensively researched due to their strong surface confinement. The strong surface confinement allows high absorption in an infrared (IR) detector with a thin active absorption region. The excitation of surface plasmonic resonance (SPR) depends on the metallic structures and the interface materials. This enables engineering of plasmonic-enhanced IR detector properties (e.g. detection wavelength, polarization and angular dependence) by properly designing the plasmonic structures. This chapter first gives a brief review of the surface plasmonic waves, followed by the description of SPR excitation in a metallic two-dimensional (2D) sub-wavelength hole array (2DSHA) structure. The applications of the 2DSHA SPR in IR detector enhancement are then presented with a discussion of the polarization and angular dependence.

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Section: Nanoplasmonics -Fundamentals and Applicationsmentioning

confidence: 99%

Section: Nanoplasmonics -Fundamentals and Applications 202mentioning

confidence: 99%

Section: Backside Configured 2dsha-enhanced Qdipsmentioning

confidence: 99%

“…The backside-configured plasmonic structure can induce stronger E-field at the interface and therefore can provide larger plasmonic enhancement [12].…”

Section: Backside Configured 2dsha-enhanced Qdipsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Surface Plasmonics and Its Applications in Infrared Sensing

Gu¹,

Lu²,

Kemsri³

et al. 2017

Nanoplasmonics - Fundamentals and Applications

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Surface Plasmonic Resonance‐Enhanced Infrared Photodetectors

Xiang,

Gu,

2023

Optical Imaging and Sensing

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Strong Responsivity Enhancement of Quantum Dot‐in‐a‐Well Infrared Photodetectors Using Plasmonic Structures

Fowler

Kim

Lee

et al. 2018

Advcd Theory and Sims

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Detector responsivity enhancement from integrating optimized plasmonic structure layers into quantum dot-in-a-well photodetectors is investigated by a finite integration technique-based simulation. It is found that by including a 0.1 µm thick gold hole-array layer onto a backside illuminated photodetector, the peak detector responsivity is enhanced by nearly a factor of 8. A 0.2 µm thick gold disk-array layer improves the peak responsivity by around 15 instead. The calculated enhancement factors show a good agreement with experimental data by Gu et al. [1] and Lee et al. [2] Simulation method and analytical analysis accomplished in this paper provide a generalized approach to design optimal plasmonic structures integrated to various infrared detecting device configurations.high-temperature operation), [3][4][5] with those of quantum well detectors (better sensitivity and control over operating wavelength), and DWELL detectors are approaching MCTs in terms of responsivity and specificdetectivity [6,7] (although DWELL detectors still exhibit worse performance than MCTs).DWELL detector performance can be enhanced by surface plasmons (SPs) caused by the inclusion of a sub-wavelength metallic hole array (SP polaritons: SPPs) or subwavelength metallic nanoparticles (localized SPs: LSPs). [8][9][10][11][12] SPPs are the collective oscillations of electron plasma in the metallic structure, for example, a metallic hole array, excited by electromagnetic (EM) radiation, [13][14][15][16] which can concentrate light at a subwavelength scale beyond the diffraction limit, thereby significantly enhancing the EM field. LSPs confine SPs in the vicinity of sub-wavelength resonators, for example, metallic disks, which also can significantly enhance the EM field near the surface of the resonators, [17] thereby improving the performance of the photodetectors. [18][19][20]

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Backside-configured surface plasmonic structure with over 40 times photocurrent enhancement

Cited by 47 publications

References 19 publications

Surface Plasmonics and Its Applications in Infrared Sensing

Surface Plasmonics and Its Applications in Infrared Sensing

Surface Plasmonic Resonance‐Enhanced Infrared Photodetectors

Strong Responsivity Enhancement of Quantum Dot‐in‐a‐Well Infrared Photodetectors Using Plasmonic Structures

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