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Synthesis and characteristics of Tb-doped Y <inf>2</inf>SiO <inf>5</inf> nanophosphors and luminescent layer for enhanced photovoltaic cell performance

Yim, DK and Cho, IS and Lee, S and Kwak, CH and Kim, DH and Lee, JK and Hong, KS (2011) Synthesis and characteristics of Tb-doped Y <inf>2</inf>SiO <inf>5</inf> nanophosphors and luminescent layer for enhanced photovoltaic cell performance. Journal of Nanoscience and Nanotechnology, 11 (10). 8748 - 8753. ISSN 1533-4880

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Abstract

Nanophosphors based on green emitting terbium doped yttrium silicates with the general formula Y 2SiO 5:Tb 3+ with a size of 30∼60 nm were synthesized by the hydrothermal method. The prepared nanophosphors were characterized by X-ray diffraction, field-emission scanning electron microscopy, transmission electron microscopy, UV-Vis diffuse reflectance spectroscopy and fluorescence spectroscopy. It was found that the nanophosphors crystallize in an X 1-type monoclinic structure (P2 1/c) and absorb UV light from 220 to 300 nm which they then down-convert into visible-light (strong green emission at around 545 nm ( 5D 4 → 7F J)). As TiO 2-based dye-sensitized solar cells exhibit their maximum incident photon to current efficiency at around 500∼600 nm, the wavelength-modulation characteristics of the nanophosphors can be efficient for dye-sensitized solar cell systems. Therefore, the Y 2SiO 5:Tb 3+ nanophosphors were introduced into a TiO 2-based dye-sensitized solar cell and their effects on the performance of the solar cell were investigated. Copyright © 2011 American Scientific Publishers. All rights reserved.


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Details

Item Type: Article
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Yim, DK
Cho, IS
Lee, S
Kwak, CH
Kim, DH
Lee, JKjul37@pitt.eduJUL370000-0002-7778-7679
Hong, KS
Centers: Other Centers, Institutes, Offices, or Units > Petersen Institute of NanoScience and Engineering
Date: 1 December 2011
Date Type: Publication
Journal or Publication Title: Journal of Nanoscience and Nanotechnology
Volume: 11
Number: 10
Page Range: 8748 - 8753
DOI or Unique Handle: 10.1166/jnn.2011.3490
Schools and Programs: Swanson School of Engineering > Mechanical Engineering and Materials Science
Refereed: Yes
ISSN: 1533-4880
PubMed ID: 22400254
Date Deposited: 23 Oct 2014 16:08
Last Modified: 29 Oct 2019 18:55
URI: http://d-scholarship.pitt.edu/id/eprint/23397

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