Please use this identifier to cite or link to this item: http://lib.jncasr.ac.in:8080/jspui/handle/10572/2502
Title: Large-area luminescent solar concentrators based on 'Stokes-shift-engineered' nanocrystals in a mass-polymerized PMMA matrix
Authors: Meinardi, Francesco
Colombo, Annalisa
Velizhanin, Kirill A.
Simonutti, Roberto
Lorenzon, Monica
Beverina, Luca
Viswanatha, Ranjani
Klimov, Victor I.
Brovelli, Sergio
Keywords: Optics
Applied Physics
Quantum Dots
Semiconductor Nanocrystals
Auger Recombination
Poly(Methyl Methacrylate)
Colloidal Nanocrystals
Doped Nanocrystals
Optical-Properties
Cdse Nanocrystals
Photovoltaics
Composites
Issue Date: 2014
Publisher: Nature Publishing Group
Citation: Meinardi, F; Colombo, A; Velizhanin, KA; Simonutti, R; Lorenzon, M; Beverina, L; Viswanatha, R; Klimov, VI; Brovelli, S, Large-area luminescent solar concentrators based on 'Stokes-shift-engineered' nanocrystals in a mass-polymerized PMMA matrix. Nature Photonics 2014, 8 (5) 392-399, http://dx.doi.org/10.1038/nphoton.2014.54
Nature Photonics
8
5
Abstract: Luminescent solar concentrators are cost-effective complements to semiconductor photovoltaics that can boost the output of solar cells and allow for the integration of photovoltaic-active architectural elements into buildings (for example, photovoltaic windows). Colloidal quantum dots are attractive for use in luminescent solar concentrators, but their small Stokes shift results in reabsorption losses that hinder the realization of large-area devices. Here, we use 'Stokes-shiftengineered' CdSe/CdS quantum dots with giant shells (giant quantum dots) to realize luminescent solar concentrators without reabsorption losses for device dimensions up to tens of centimetres. Monte-Carlo simulations show a 100-fold increase in efficiency using giant quantum dots compared with core-only nanocrystals. We demonstrate the feasibility of this approach by using high-optical-quality quantum dot-polymethylmethacrylate nanocomposites fabricated using a modified industrial method that preserves the light-emitting properties of giant quantum dots upon incorporation into the polymer. Study of these luminescent solar concentrators yields optical efficiencies > 10% and an effective concentration factor of 4.4. These results demonstrate the significant promise of Stokes-shift-engineered quantum dots for large-area luminescent solar concentrators.
Description: Restricted Access
URI: http://hdl.handle.net/10572/2502
ISSN: 1749-4885
Appears in Collections:Research Papers (Ranjani Viswanatha)

Files in This Item:
File Description SizeFormat 
140.pdf
  Restricted Access
3.3 MBAdobe PDFView/Open Request a copy


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.