Self-Assembled Al Nanostructure/ZnO Quantum Dot Heterostructures for High Responsivity and Fast UV Photodetector

Liu, Sisi; Li, Mingyu; Zhang, Jianbing; Su, Dong; Huang, Zhen; Kunwar, Sundar; Lee, Jihoon

doi:10.1007/s40820-020-00455-9

Cited by 48 publications

(34 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The observed improvement can be attributed to the localized surface plasmon of Au NPs. The plasmonic resonance of the metallic Au NPs locally improves the electric field of the incident fundamental light near the CdSe NWs [3,10,12]. The SHG signal improvement, semiconductor/metal hybrid nanostructures have a some merit such as controlling the times improvement by controlling the coating density and the distance between the metal and semiconductor is not needful with the charge transfer.…”

Section: Discussion Of the Results Of The Study Of Secondharmonic Generation In Single Cdse Nanowires Coated With Gold Nanoparticlesmentioning

confidence: 99%

“…1. Synthesis of CdSe and CdSe/Au hybrid nanowires A hexagonal wurtzite CdSe structure belongs to the non-centro-symmetric crystal class of 6 mm [9,11,12] synthesized with a chemical precipitation technique. A mixture on top of high purity CdSe (cadmium selenide, powder, 99.995 % trace metals basis) and graphite powders (1:1 ratio weight) was used as a nucleus and was placed into a quartz cell that was put in the center of a tube furnace.…”

Section: Investigation On Materials and Methods Of Cdsementioning

confidence: 99%

“…The papers [11,12] present the results of research on second-harmonic generation in single semiconductor nanowires. The study of the nonlinear phenomenon of single semiconductor NWs is shown.…”

Section: Dark-field Scattering Spectramentioning

confidence: 99%

See 2 more Smart Citations

Investigation on synthesis, structural and nonlinear optical responses of cadmium selenide coated with gold nanoparticles induced by femtosecond laser excitation

Jassim

Kareem

Ibrahim

et al. 2021

EEJET

View full text Add to dashboard Cite

Nonlinear optical signal enhancement cannot be achieved by using semiconductor materials alone. Here, we show that the recently discovered nonlinear optical behavior of plasmonic nanoparticles and hybrid nanowires enables an enhanced nonlinear optical response. A synthesis, characterization, and nonlinear optical response of synthesized hybrid nanowires structures were studied. The growth of gold nanoparticles (Au NPs) onto cadmium selenide nanowires CdSe NWs with different concentrations of gold nanoparticles coating prepared via an impregnation technique. Au nanoparticles in the CdSe/Au nanowires were uniformly dispersed on the CdSe nanowire surface. The surface morphologies and the propagation manner of hybrid nanostructures were used for transmission electron microscopy (TEM) to study the optical properties of pure and hybrid nanostructures. Dark-field scattering microscopy was used to characterize single CdSe NW and confirm the coating of hybrid CdSe/Au nanowires and characterize the concentration effect of gold nanoparticles. The dark-field scattering spectrum (DFSS) reference to the surface plasmon resonance of nearer Au NPs was observed at ca. 800 nm. By making a comparison between a single cadmium selenide with and without gold nanoparticles coating, hybrid CdSe/Au nanowires exhibit sufficient quality to produce second-harmonic generation stimulated with a pulsed, linearly polarized pump-light from a femtosecond Ti-sapphire laser. The estimated improvement of the second-harmonic generation signal is about ~ 1.8 times, ~ 5.5 times, ~ 6.9 times for low, moderate and full coating of gold nanoparticles, which was mainly due to the high quality of synthesis techniques and good dispersion of gold nanoparticles on CdSe nanowires

show abstract

Section: Discussion Of the Results Of The Study Of Secondharmonic Generation In Single Cdse Nanowires Coated With Gold Nanoparticlesmentioning

confidence: 99%

Section: Investigation On Materials and Methods Of Cdsementioning

confidence: 99%

See 1 more Smart Citation

Investigation on synthesis, structural and nonlinear optical responses of cadmium selenide coated with gold nanoparticles induced by femtosecond laser excitation

Jassim

Kareem

Ibrahim

et al. 2021

EEJET

View full text Add to dashboard Cite

show abstract

“…In phase II, R S maintained the similar response from ≈2.5 mA W −1 (170 nm) to ≈2.6 mA W −1 (220 nm), indicating the maximum detection ability of the Ag/AAO hybrid plasmonic nanostructures based perovskite CsPbBr 3 photodetectors. Meanwhile, the normalized detectivity (D*) can be expressed by: [41] D…”

Section: Resultsmentioning

confidence: 99%

\begin{matrix} D^{*} = R_{S} \times \sqrt{\frac{S}{2 e I_{off}}} \end{matrix}

where e represents the elementary charge. The D * was significantly improved by one order for each pore size in comparison with the device fabricated on bare glass (5.46 × 10 8 Jones).…”

Section: Resultsmentioning

confidence: 99%

Enhanced Spatial Light Confinement of All Inorganic Perovskite Photodetectors Based on Hybrid Plasmonic Nanostructures

Shen

et al. 2020

Small

Self Cite

View full text Add to dashboard Cite

3D incident light confinement by radical electromagnetic fields offers a facile and novel way to break through the performance limit of inorganic perovskite CsPbBr3 quantum dots (QDs). Herein, metallic nanoparticles decorated anodic aluminum oxide (AAO) hybrid plasmonic nanostructures with geometric control are first proposed for cyclic light utilization of perovskite photodetectors, enabled by spatially extended light confinement. The drastic multiple interference induced by plasmonic coupling within AAO matrixes are generated as a function of pore sizes, which can effectively collect the transmitted photons back to the surface. In addition, the self‐assembled metallic nanoparticles simultaneously concentrate the incident and reflected light beams into the CsPbBr3 QD layers. The light confinement inherently stems from the metallic nanoparticles due to the variation of the near surface electromagnetic fields. As a result, perovskite photodetectors based on Al nanoparticles/AAO hybrid plasmonic nanostructures with a pore size of 220 nm exhibit enhanced photoresponse behavior with remarkably increased photocurrent by ≈43× and maintain low dark current under 490 nm light illumination at 1 V.

show abstract

Endogenous Synergistic Enhanced Self‐Powered Photodetector via Multi‐Effect Coupling Strategy toward High‐Efficiency Ultraviolet Communication

Ouyang

Zhao

Xun

et al. 2022

Adv Funct Materials

View full text Add to dashboard Cite

Ultraviolet (UV) communication is a promising security optical wireless communication technology, and self‐powered photodetectors as their optical receivers offer formidable evolution opportunities. However, insufficient light harvesting and carrier separation of self‐powered photodetectors hinder them from achieving high‐efficiency UV communication. Herein, a multi‐effect coupling strategy is proposed to design an enhanced self‐powered Ag NPs@ZnO nanowires/PEDOT:PSS (AZP) UV photodetector. Taking full advantage of the plasmonic and pyro‐phototronic coupling effect, the endogenous synergistic enhancement of UV light utilization and charge separation efficiency is realized without external field. The responsivity and detectivity of the AZP photodetector are significantly increased more than two and three times respectively, and the response time is less than 0.1 ms. Furthermore, a UV communication system is integrated based on the self‐powered AZP photodetector that conducts synchronous, accurate, and rapid wireless data transmission. Notably, the integrated UV communication system presenting large communication bandwidth with 4800 baud exhibits desirable efficient information transmission potential. This work provides design strategies for the advanced self‐powered UV photodetector toward future energy‐saving and high‐efficiency optical wireless communication.

show abstract

Self-Assembled Al Nanostructure/ZnO Quantum Dot Heterostructures for High Responsivity and Fast UV Photodetector

Cited by 48 publications

References 46 publications

Investigation on synthesis, structural and nonlinear optical responses of cadmium selenide coated with gold nanoparticles induced by femtosecond laser excitation

Investigation on synthesis, structural and nonlinear optical responses of cadmium selenide coated with gold nanoparticles induced by femtosecond laser excitation

Enhanced Spatial Light Confinement of All Inorganic Perovskite Photodetectors Based on Hybrid Plasmonic Nanostructures

Endogenous Synergistic Enhanced Self‐Powered Photodetector via Multi‐Effect Coupling Strategy toward High‐Efficiency Ultraviolet Communication

Contact Info

Product

Resources

About