UV-modification of Ag nanoparticles on α-MoC<sub><i>x</i></sub> for interface polarization engineering in electromagnetic wave absorption

Zhu, Pengyuan; Kang, Yifan; Li, Xinglong; Yu, Haoquan; Liu, Tong; Song, Ming; Zhang, Yanan; Zhou, Lifan; Zhao, Ping; Huang, Wenhuan

doi:10.1039/d3nr05917k

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Nanoscale

2024

DOI: 10.1039/d3nr05917k

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UV-modification of Ag nanoparticles on α-MoC_x for interface polarization engineering in electromagnetic wave absorption

Pengyuan Zhu,

Yifan Kang,

Xinglong Li

et al.

Abstract: The design of electromagnetic wave absorbing materials (EWAMs) has aroused great attention with the express development of electromagnetic devices, which pose severe EM pollution to human health. Herein, an Ag-doped...

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Narrowband Solar-Blind Photodetection of the Plasmonic (In_0.3Ga_0.7)₂O₃ Detector via the Synergetic Enhancement of Small-Sized Ag-Nanoparticle Photoabsorbance and Surface Modification

Shu,

Sha,

Zhang

et al. 2024

ACS Appl. Mater. Interfaces

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Currently, research on Ag nanoparticles (AgNPs) predominantly focuses on UV/visible photodetection and UV emission, seemingly overlooking the significance of Ag in enhancing deep ultraviolet photon detection. In this work, (In 0.3 Ga 0.7 ) 2 O 3 thin films were fabricated by plasma-enhanced chemical vapor deposition. Due to the unique photoabsorbance characteristic and better interaction with photons of small-sized AgNPs, they effectively suppress the UVB absorbance caused by energy band engineering in the (In 0.3 Ga 0.7 ) 2 O 3 thin film while enhancing photoabsorbance in UVC due to the surface plasmon effect. Therefore, under the synergistic effect of enhanced photon absorbance and hot electron transfer, the performance of the detector is significantly improved, and its responsivity (R), external quantum efficiency, and detectivity (D*) are 193 mA/W, approximately 100%, and 10 14 Jones, respectively, at a bias of −6 V. The fast response time and decay time are 634.6 and 194.1 ms, respectively; the rapid decay facilitated by AgNPs is attributed to the increased indirect recombination rate. AgNPs exhibit excellent narrowband response characteristics and absorbance properties in specific wavelength bands for the InGaO photodetector. This research lays the foundation for the practical application of localized surface plasmon resonance-enhanced photon-sensing capabilities.

show abstract

Narrowband Solar-Blind Photodetection of the Plasmonic (In_0.3Ga_0.7)₂O₃ Detector via the Synergetic Enhancement of Small-Sized Ag-Nanoparticle Photoabsorbance and Surface Modification

Shu,

Sha,

Zhang

et al. 2024

ACS Appl. Mater. Interfaces

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show abstract

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UV-modification of Ag nanoparticles on α-MoC_x for interface polarization engineering in electromagnetic wave absorption

Abstract: The design of electromagnetic wave absorbing materials (EWAMs) has aroused great attention with the express development of electromagnetic devices, which pose severe EM pollution to human health. Herein, an Ag-doped...

Cited by 1 publication

References 60 publications

Narrowband Solar-Blind Photodetection of the Plasmonic (In_0.3Ga_0.7)₂O₃ Detector via the Synergetic Enhancement of Small-Sized Ag-Nanoparticle Photoabsorbance and Surface Modification

Narrowband Solar-Blind Photodetection of the Plasmonic (In_0.3Ga_0.7)₂O₃ Detector via the Synergetic Enhancement of Small-Sized Ag-Nanoparticle Photoabsorbance and Surface Modification

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UV-modification of Ag nanoparticles on α-MoCx for interface polarization engineering in electromagnetic wave absorption

Abstract: The design of electromagnetic wave absorbing materials (EWAMs) has aroused great attention with the express development of electromagnetic devices, which pose severe EM pollution to human health. Herein, an Ag-doped...

Cited by 1 publication

References 60 publications

Narrowband Solar-Blind Photodetection of the Plasmonic (In0.3Ga0.7)2O3 Detector via the Synergetic Enhancement of Small-Sized Ag-Nanoparticle Photoabsorbance and Surface Modification

Narrowband Solar-Blind Photodetection of the Plasmonic (In0.3Ga0.7)2O3 Detector via the Synergetic Enhancement of Small-Sized Ag-Nanoparticle Photoabsorbance and Surface Modification

Contact Info

Product

Resources

About

UV-modification of Ag nanoparticles on α-MoC_x for interface polarization engineering in electromagnetic wave absorption

Narrowband Solar-Blind Photodetection of the Plasmonic (In_0.3Ga_0.7)₂O₃ Detector via the Synergetic Enhancement of Small-Sized Ag-Nanoparticle Photoabsorbance and Surface Modification

Narrowband Solar-Blind Photodetection of the Plasmonic (In_0.3Ga_0.7)₂O₃ Detector via the Synergetic Enhancement of Small-Sized Ag-Nanoparticle Photoabsorbance and Surface Modification