A plasmonic enhanced photodetector based on silicon nanocrystals obtained through laser ablation

被引：16

作者：

Alkis, Sabri ^{[1
,2
]}

Oruc, Feyza B. ^{[1
,2
]}

Ortac, Bulend ^{[1
]}

Kosger, A. Cahit ^{[1
,2
]}

Okyay, Ali K. ^{[1
,2
]}

机构：

[1] Bilkent Univ, UNAM Inst Mat Sci & Nanotechnol, TR-06800 Ankara, Turkey

[2] Bilkent Univ, Dept Elect & Elect Engn, TR-06800 Ankara, Turkey

来源：

JOURNAL OF OPTICS | 2012年 / 14卷 / 12期

关键词：

photodetector; thin film; semiconductor nanocrystals; laser ablation; QUANTUM CONFINEMENT; LIQUID ENVIRONMENT; OPTICAL-PROPERTIES; AQUEOUS-SOLUTION; NANOPARTICLES; SIZE; PHOTOLUMINESCENCE; GENERATION; ULTRABRIGHT; POWDERS;

D O I：

10.1088/2040-8978/14/12/125001

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a proof-of-concept photodetector which is sensitive in the visible spectrum. Silicon nanocrystals (Si-NCs) obtained by laser ablation are used as the active absorption region. Si-NC films are formed from a polymeric dispersion. The films are sandwiched between thin insulating films to reduce the electrical leakage current. Furthermore, Ag nanoparticles are integrated with the photodetector to enhance the visible response using plasmonic effects. The measured photocurrent is resonantly enhanced, which is explained in terms of enhanced local fields caused by localized plasmons. The UV-vis spectrum of Ag nanoparticles is also measured to verify the resonance.

引用

页数：5

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