Radiation detection with CdTe quantum dots in sol-gel glass and polymer nanocomposites

Kavin Manickaraj; Brent K. Wagner; Zhitao Kang

doi:10.1117/12.2018110

29 May 2013 Radiation detection with CdTe quantum dots in sol-gel glass and polymer nanocomposites

Kavin Manickaraj, Brent K. Wagner, Zhitao Kang

Author Affiliations +

Proceedings Volume 8725, Micro- and Nanotechnology Sensors, Systems, and Applications V; 87252L (2013) https://doi.org/10.1117/12.2018110
Event: SPIE Defense, Security, and Sensing, 2013, Baltimore, Maryland, United States

Abstract

Optically based radiation detectors in various fields of science still suffer from low resolution, sensitivity and efficiency that restrict their overall performance. Quantum dots (QD) are well-suited for such detectors due to their unique optical properties. CdTe QDs show fast luminescence decay times, high conversion efficiencies, and have band gaps strongly dependent on the particle radius. Since QD particle sizes are well below the wavelengths of their emissions, they remain optically transparent when incorporated in both polymer and sol-gel based silica glass due to negligible optical scattering. In addition, as these composite materials can greatly improve the mechanical robustness of alpha-particle detectors, conventionally known to have delicate components, CdTe QDs show high promise for radiation sensing applications. These properties are especially advantageous for alpha-particle and potentially neutron detection. In this work, CdTe QD-based glass or polymer matrix nanocomposites were synthesized for use as alpha-particle detection scintillators.. The fast photo-response and decay times provide excellent time resolution. The radiation responses of such nanocomposites in polymer or glass matrices were investigated.

Citation Download Citation

Kavin Manickaraj, Brent K. Wagner, and Zhitao Kang "Radiation detection with CdTe quantum dots in sol-gel glass and polymer nanocomposites", Proc. SPIE 8725, Micro- and Nanotechnology Sensors, Systems, and Applications V, 87252L (29 May 2013); https://doi.org/10.1117/12.2018110

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