Au–PbS core–shell nanorods for plasmon-enhanced near-infrared photodetection

Zhao, Xiuge; Duan, Yongsheng; Li, Kai; Fang, Yongchu; Song, Xiaoxian; Zhang, Haiting; Yu, Huaqing

doi:10.1007/s10853-019-03920-y

Cited by 8 publications

(6 citation statements)

References 31 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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“…In the subsequent step, cation exchange can be performed to give various metal sulfide/selenide shells. This aqueous cation exchange approach has become very popular in the synthesis of many types of core@shell structures, such as (Au NR)@CdS (Figure m), (Au NR)@ZnS, and (Au NR)@PbS. ,− The synthesized metal sulfide/selenide shells have an intimate interfacial contact with the Au NR core, high shell crystallinity, and good structural controllability . Consecutive multistep cation exchange can be carried out to create core@multishell heterostructures or core@(multicomponent shell) heterostructures. , …”

Section: Gold-nanorod-based Heterostructuresmentioning

confidence: 99%

Gold Nanorods: The Most Versatile Plasmonic Nanoparticles

et al. 2021

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Gold nanorods (NRs), pseudo-one-dimensional rod-shaped nanoparticles (NPs), have become one of the burgeoning materials in the recent years due to their anisotropic shape and adjustable plasmonic properties. With the continuous improvement in synthetic methods, a variety of materials have been attached around Au NRs to achieve unexpected or improved plasmonic properties and explore state-of-the-art technologies. In this review, we comprehensively summarize the latest progress on Au NRs, the most versatile anisotropic plasmonic NPs. We present a representative overview of the advances in the synthetic strategies and outline an extensive catalogue of Au-NR-based heterostructures with tailored architectures and special functionalities. The bottom-up assembly of Au NRs into preprogrammed metastructures is then discussed, as well as the design principles. We also provide a systematic elucidation of the different plasmonic properties associated with the Au-NR-based structures, followed by a discussion of the promising applications of Au NRs in various fields. We finally discuss the future research directions and challenges of Au NRs.

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“…A strong photoresponsivity (in Ω/W and A/W) was measured, and the maximum values reached 7.5 × 10 6 Ω/W and 1.3 A/W (Figure d). Detectivity ( D *), as another key parameter to evaluate the performance of PDs, was also calculated by following some reference equations from previous studies. , The maximum D * for our PPy-NPs/Pt device can reach 1.1 × 10 11 Jones, which is comparable with some InGaAs PDs ( D * = 1 × 10 10 –1 × 10 13 Jones) and nanostructured PDs ( D * = ∼1 × 10 8 –1 × 10 14 Jones). − Compared with commercial PDs , and some NP-based ones, ,− this PPy-NPs/Pt hybrid PD is competitive in the photodetection range, responsivity, and response time, as summarized in Table . Notably, PPy-NPs/Pt hybrid PD reveals both faster photoresponse and slightly larger photoresponsivity than PPy-NPs/thermistor PD, although the size of the Pt pattern is much smaller than that of the NTC thermistor.…”

Section: Results and Discussionmentioning

confidence: 79%

“…44,45 The maximum D* for our PPy-NPs/Pt device can reach 1.1*10 11 Jones, which is comparable with some InGaAs PDs (D* = 1*10 10 -1*10 13 Jones) and nanostructured PDs (D* = ~ 1*10 8 -1*10 14 Jones). [46][47][48] Compared with commercial PDs 46,48 and some nanoparticle-based ones 10,[49][50][51][52] , this PPy-NPs/Pt hybrid PD is competitive in photodetection range, responsivity and response time, as summarized in Table 1. Notably, PPy-NPs/Pt hybrid PD reveals both faster photoresponse and slightly larger photoresponsivity than PPy-NPs/thermistor PD, although the size of Pt pattern is much smaller than that of NTC thermistor.…”

Section: Resultsmentioning

confidence: 99%

Long-Term Stable Near-Infrared–Short-Wave-Infrared Photodetector Driven by the Photothermal Effect of Polypyrrole Nanostructures

Xiang

Xin

et al. 2021

ACS Appl. Mater. Interfaces

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Polypyrrole (PPy) is a conductive polymer and widely applied in different applications owing to its broadband absorption in the UV-visible, near-infrared (NIR) and short-wave-infrared (SWIR) spectrum, excellent conductivity and strong photothermal effect. In this work, we explored for the first time the photothermal effect of polypyrrole nanoparticles (PPy-NPs) in a photothermal-induced detector structure, and developed a new type of air-stable hybrid PPy-NPs/Pt photodetector (PD) with NIR/SWIR sensitivity. By combining PPy-NPs with a platinum (Pt) resistive pattern, we fabricated PPy-NPs/Pt PDs that are sensitive to illumination in the wavelength range from 800 nm to 2000 nm. Under the illumination of  = 1.5 µm, the maximum photoresponsivity was measured to be ~ 1.3 A/W with a 131 µs photoresponse rise time. Owing to the material stability from both PPy-NPs and the Pt pattern, the current photodetectors show long-term stable photoresponsivity when they were stored in air without encapsulation. The results suggest that the PPy-NPs/Pt hybrid 2 PDs are promising candidates for a new type of low-cost and broadband due to their multiple advantages such as free of toxic heavy-metals, air stability and solution-processing.

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Au–PbS core–shell nanorods for plasmon-enhanced near-infrared photodetection

Cited by 8 publications

References 31 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

Gold Nanorods: The Most Versatile Plasmonic Nanoparticles

Long-Term Stable Near-Infrared–Short-Wave-Infrared Photodetector Driven by the Photothermal Effect of Polypyrrole Nanostructures

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