Optical spectroscopy of single semiconductor nanocrystals close to gold nanoparticles

Xuedan Ma; Hua Tan; Tobias Kipp; Alf Mews

doi:10.1117/12.914454

23 February 2012 Optical spectroscopy of single semiconductor nanocrystals close to gold nanoparticles

Xuedan Ma, Hua Tan, Tobias Kipp, Alf Mews

Proceedings Volume 8232, Colloidal Nanocrystals for Biomedical Applications VII; 82321I (2012) https://doi.org/10.1117/12.914454
Event: SPIE BiOS, 2012, San Francisco, California, United States

Abstract

The electronic interaction of semiconductor nanocrystals with adjacent metallic nanostructures is investigated by single nanocrystal fluorescence spectroscopy. We synthesized CdSe multishell semiconductor nanocrystals coated with silica shells and coupled them to self-assembled gold nanoparticle films. The nanocrystals showed an average increase of the on-time photoluminescence intensity by a factor of up to three and a decreased photoluminescence lifetime by about one order of magnitude. In addition, we observed photoluminescence from gray states and a strong blinking suppression with an increase of the on-state fraction from 60% to more than 90%.

Citation Download Citation

Xuedan Ma, Hua Tan, Tobias Kipp, and Alf Mews "Optical spectroscopy of single semiconductor nanocrystals close to gold nanoparticles", Proc. SPIE 8232, Colloidal Nanocrystals for Biomedical Applications VII, 82321I (23 February 2012); https://doi.org/10.1117/12.914454

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