Effect of Ag Nanoparticle Texturing on Al2O3 Nanowires for Improved Photodetection

被引：0

作者：

Das, Abhijit ^{[1
]}

Dalal, Avijit ^{[2
]}

Mondal, Aniruddha ^{[2
]}

Singh, Laishram Robindro ^{[3
]}

Sarkar, Mitra Barun ^{[1
]}

机构：

[1] Natl Inst Technol Agartala, Dept Elect & Commun Engn, Agartala 799046, Tripura, India

[2] Natl Inst Technol Durgapur, Dept Phys, Durgapur 713209, W Bengal, India

[3] NE Hill Univ, Dept Nanotechnol, Shillong 793022, Meghalaya, India

来源：

IEEE ELECTRON DEVICE LETTERS | 2024年 / 45卷 / 12期

关键词：

GLAD; Al2O3; Ag; nanowire; photoresponse; PHOTOLUMINESCENCE;

D O I：

10.1109/LED.2024.3478387

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This work utilized the glancing angle deposition (GLAD) method to grow an Al2O3 nanowires (NW) device and an Ag nanoparticles (NP) textured Al2O3 NW device on an n-Si substrate. The growth of the proposed nanostructures is facilitated by virtue of the shadowing effect of the GLAD process. The polycrystalline crystal structure was determined through independent crystallographic investigations. After Ag NP texturing on Al2O3 NW, an improvement in optical absorption and Raman emission was observed. Ag texturing on Al2O3 NW considerably improved the most important photodetection parameters, including photosensitivity, responsivity, quantum efficiency, detectivity, and noise equivalent of power (NEP). This overall improvement in the photodetection parameters is primarily due to the enhancement in the photocurrent by localized surface plasmon resonance (LSPR) exhibited by Ag NP. The proposed device with Ag NP also exhibited an ultrafast photo response. Therefore, the finding reveals that the Ag NP textured Al2O3 NW device is a feasible option for high-speed photodetection applications.

引用

页码：2435 / 2438

页数：4

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