An enhanced Vis-NIR photodetector based on Ag@ PbS core-shell plasmonic heterostructure

Mozafari, M.; Nasresfahani, Sh.; Sheikhi, Mohammad Hossein; Agharezaei, H.

doi:10.1016/j.jallcom.2020.156831

Cited by 18 publications

(9 citation statements)

References 57 publications

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“…To compare with other colloidal nanoparticle based photodetectors, Table 1 summarizes the major characteristics of colloidal plasmonic metallic nanoparticles for visible, near‐IR, and/or SWIR photodetectors from previous applications and the current work. Despite the fact that colloidal plasmonic metallic nanoparticles, e.g., NPs [ 40–43 ] and NRs, [ 23,36,44 ] have been successfully applied previously for photodetection, in comparison to previous studies, the current results demonstrate a remarkable broadband detection covering the NIR‐SWIR spectrum from λ = 800 to 2000 nm, with a detection speed comparable or faster than many previous reports. Innovations on solution‐processed broadband photodetection devices in the NIR‐SWIR spectrum is particularly important because current technologies detecting this spectrum window suffer from high cost and often demand highly toxic heavy metal elements.…”

Section: Resultscontrasting

confidence: 70%

“…Supporting Information is available from the Wiley Online Library or from the author. Ag-NPs/CdSe-ZnS-QDs 2.5 × 10 −6 A W −1 @ 440 nm -400-600 [40] Au-NRs/ZnO-nanowire -0.25 s 650-850 [23] Au-NPs/TiO 2 0.5 mA W −1 @ 600 nm 1.5 s 400-900 [41] SiO 2 -AuNRs/SLG-InP 0.14 A W −1 @ 980 nm 441 ns 300-1200 [44] Ag-PbS core-shell NPs 26.1 A W −1 @ 980 nm 0.17 s 370-1064 [42] Au-PbS core-shell NPs 18.5 A W −1 @ 980 nm 0.32 s 405-1064 [43] Au-NRs/NTC-thermistor -2.5 s 1000-1800 [36] Au-NRs/Pt-micropattern 13 mA W −1 @ 1000 nm 180 µs 800-2000 This work…”

Section: Supporting Informationmentioning

confidence: 99%

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Plasmon Coupled Colloidal Gold Nanorods for Near‐Infrared and Short‐Wave‐Infrared Broadband Photodetection

Xiang

Xin

et al. 2021

Adv Materials Technologies

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Solution‐processed plasmonic colloidal gold nanorods (Au NRs) are promising candidates leading to new photodetection applications. While plasmonic Au NRs of a specific dimension will lead to a well‐defined optical extinction due to the localized surface plasmon resonance, in photodetection applications broadband functioning is often desired. In this work, a broadband optical extinction is achieved from λ = 400 to 2000 nm by coupling colloidal Au NRs of various dimensions in a thin film form. Such an Au NR thin film is further applied on a platinum (Pt) electrode to fabricate hybrid Au‐NR/Pt photodetectors. On these hybrid Au‐NRs/Pt devices, thanks to the plasmonic‐induced photothermal effect, a clear broadband photoresponse is demonstrated covering the near‐infrared (NIR) and short‐wave‐infrared (SWIR) spectrum from λ = 800 to 2000 nm, with a <200 µs fast photoresponse time. This work suggests that suitably coupled plasmonic colloidal Au NRs and their strong photothermal effect are promising strategies for the future development of low‐cost and broadband NIR/SWIR photodetection.

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Section: Resultscontrasting

confidence: 70%

Section: Supporting Informationmentioning

confidence: 99%

Plasmon Coupled Colloidal Gold Nanorods for Near‐Infrared and Short‐Wave‐Infrared Broadband Photodetection

Xiang

Xin

et al. 2021

Adv Materials Technologies

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“…The photoconductive gain (G) represents the number of carriers generated per incident photon at a certain wavelength. 31 The relationship between R and G can be converted using the following formula 32…”

Section: ■ Results and Discussionmentioning

confidence: 99%

MoS₂-on-GaN Plasmonic Photodetector Using a Bowtie Striped Antenna Structure

Liu

Lin

et al. 2022

ACS Appl. Electron. Mater.

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The layered semiconductor material molybdenum disulfide (MoS2) has led to an upsurge in research for applications in optoelectric devices that benefit from its excellent optical and electrical properties. The application of the plasmonic structure to enhance light–matter interaction and intensity of the light field via localized surface plasmon resonance provides a promising method for MoS2-based devices for improving performance. In this work, we have prepared a plasmon-enhanced few-layer MoS2 photodetector based on a gallium nitride substrate using a bowtie equal grid antenna structure, and the large-scale few-layer MoS2 growth on the GaN substrate is realized by chemical vapor deposition. The enhancement MoS2 plasmonic photodetector achieves a high responsivity R of 0.82 A/W, a low noise equivalent power NEP of 6.58 × 10–14 W/Hz1/2, and a detectivity of 1.56 × 1012 Jones under 365 nm at 5 V bias and a corresponding rise/fall time of 18/10 ms. With the enhanced performance of the photodetector demonstrated, the as-fabricated plasmonic structure proposed a feasibility method to achieve enhanced photoresponse and is applicable to other high-efficiency photoelectric devices.

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“…Therefore, photons with energy above the band gap are required. − (2) A quite thick layer of CQD is required to complete the incident light absorption, leading to recombination and inefficient charge extraction at the electrodes. , One approach to overcome this limitation is concurrently exploiting the electrical and optical benefits of plasmonic nanostructures. Plasmonic nanostructures have a unique capability to concentrate, route, and manipulate light at the nanoscale. − …”

Section: Introductionmentioning

confidence: 99%

Improvement of Plasmonic CuS Nanocrystals’ Optoelectronic Properties via Cation Exchange for Infrared Detection Enhancement

Fathi

Sheikhi

Zerafat

2022

ACS Appl. Electron. Mater.

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Colloidal quantum dot (CQD) active thin films benefitting from plasmonic light trapping have emerged as an ideal platform to boost the performance of optoelectronic devices. Copper chalcogenides exhibit infrared absorption in concomitance with tunable localized surface plasmon resonances (LSPRs) within the near to mid infrared range. Regardless of the facile adjustment of the plasmonic oscillation and strong absorption in the infrared range, the application is limited due to very short-living photo-carriers followed by carrier recombination (∼100 ps). Herein, CuS nanocrystals (NCs) are developed as an infrared photoactive material to be functionalized via Pb 2+ cation substitution. A short period of cation exchange causes a large reduction in photoluminescence, reaching efficient photo-response in near infrared as a consequence of charge separation. Estimated detectivity and responsivity as high as 2.16 × 10 11 Jones and 870 mA W −1 at 750 nm illumination, respectively, were achieved. Increased reaction time and Pb 2+ contents result in a growing trend in photoluminescence intensity, consistent with trap passivation: detectivity = 2.15 × 10 11 Jones and responsivity = 730 mA W −1 at 950 nm illumination and 1.94 × 10 11 Jones and 659 mA W −1 at 840 nm. Manipulation of optical and electrical properties of Cu 2−x S NCs with precise cation substitution may open up possibilities for the application of plasmonic semiconductor NCs in optoelectronic devices.

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An enhanced Vis-NIR photodetector based on Ag@ PbS core-shell plasmonic heterostructure

Cited by 18 publications

References 57 publications

Plasmon Coupled Colloidal Gold Nanorods for Near‐Infrared and Short‐Wave‐Infrared Broadband Photodetection

Plasmon Coupled Colloidal Gold Nanorods for Near‐Infrared and Short‐Wave‐Infrared Broadband Photodetection

MoS₂-on-GaN Plasmonic Photodetector Using a Bowtie Striped Antenna Structure

Improvement of Plasmonic CuS Nanocrystals’ Optoelectronic Properties via Cation Exchange for Infrared Detection Enhancement

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An enhanced Vis-NIR photodetector based on Ag@ PbS core-shell plasmonic heterostructure

Cited by 18 publications

References 57 publications

Plasmon Coupled Colloidal Gold Nanorods for Near‐Infrared and Short‐Wave‐Infrared Broadband Photodetection

Plasmon Coupled Colloidal Gold Nanorods for Near‐Infrared and Short‐Wave‐Infrared Broadband Photodetection

MoS2-on-GaN Plasmonic Photodetector Using a Bowtie Striped Antenna Structure

Improvement of Plasmonic CuS Nanocrystals’ Optoelectronic Properties via Cation Exchange for Infrared Detection Enhancement

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Product

Resources

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MoS₂-on-GaN Plasmonic Photodetector Using a Bowtie Striped Antenna Structure