D. , Haranath and Gandhi, Namita and Sahai, Sonal and M. , Husain and Shanker, Virendra (2010) Highly emissive and low refractive index layers from doped silica nanospheres for solar cell applications. Chemical Physics Letters, 496 (1-3). pp. 100-103. ISSN 0009-2614

PDF - Published Version Restricted to Registered users only Download (829Kb) | Request a copy

Abstract

Confinement of europium (Eu3+) ions in silica (SiO2) nanospheres yields efficient red-emitting nanophosphors when excited via charge transfer states (CTS) absorption in UV (393 nm) radiation. This is explained on the basis of modulation of f–f transition due to quantum confinement of rare-earth ion in a nanosize host. It is also evidenced that the short range crystallanity and confinement effects provided by the nanospheres increases the Eu3+ emission intensity by almost ten times at the expense of CTS. Coating of organically modified SiO2 nanospheres resulted in low refractive index layers that are highly useful as cover glazing for solar collectors.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Elsevier B.V.
Subjects:	Chemistry Physics
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	03 May 2012 11:20
Last Modified:	03 May 2012 11:20
URI:	http://npl.csircentral.net/id/eprint/188

Actions (login required)

View Item