Photoluminescence quenching of colloidal silver nanoparticle on porous silicon

Li-Lin Tay; Nelson Rowell; Rabah Boukherroub

doi:10.1117/12.628609

13 October 2005 Photoluminescence quenching of colloidal silver nanoparticle on porous silicon

Li-Lin Tay, Nelson Rowell, Rabah Boukherroub

Proceedings Volume 5969, Photonic Applications in Biosensing and Imaging; 596908 (2005) https://doi.org/10.1117/12.628609
Event: Photonics North, 2005, Toronto, Canada

Abstract

Photoluminescent porous Si (pSi) is a potentially attractive material for biosensor devices. Its ease of fabrication, large active surface area and unique optical properties are just some important attributes. Among other transduction techniques, it is possible to monitor the onset of molecular binding events through the effective quenching of the bright pSi photoluminescence. Here we present the study of effective quenching through a colloidal Ag nanoparticle interaction with pSi. Placing the metallic nanoparticles in close proximity to the light emitting pSi can effectively sweep away the charge carriers from the semiconductor surface and result in a carrier depletion region near the Si-nanoparticle interface. By labeling the targeted bio-species with a silver nanoparticle, and the pSi surface with an appropriate receptor molecule ; in-situ PL monitoring can provide a real-time transduction scheme for the pSi- based biosensor devices.

Citation Download Citation

Li-Lin Tay, Nelson Rowell, and Rabah Boukherroub "Photoluminescence quenching of colloidal silver nanoparticle on porous silicon", Proc. SPIE 5969, Photonic Applications in Biosensing and Imaging, 596908 (13 October 2005); https://doi.org/10.1117/12.628609

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available