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Ultrafast excited state deactivation of doped porous anodic alumina membranes

Abstract

Free-standing, bi-directionally permeable and ultra-thin anodic aluminum oxide (AAO) membranes establish attractive templates (host) for the synthesis of nano-dots and rods of various materials (guest). This is due to their chemical and structural integrity and high periodicity on length scales of 5-150 nm which are often used to host photoactive nano-materials for various device applications including dye-sensitized solar cells. In the present study, AAO membranes are synthesized by using electrochemical methods and a detailed structural characterization using FEG-SEM, XRD and TGA confirms the porosity and purity of the material. Defect-mediated photoluminescence quenching of the porous AAO membrane in the presence of an electron accepting guest organic molecule (benzoquinone) is studied by means of steady-state and picosecond/femtosecond-resolved luminescence measurements. Using time-resolved luminescence transients, we have also revealed light harvesting of complexes of porous alumina impregnated with inorganic quantum dots (Maple Red) or gold nanowires. Both the Foerster resonance energy transfer and the nano-surface energy transfer techniques are employed to examine the observed quenching behavior as a function of the characteristic donor-acceptor distances. The experimental results will find their relevance in light harvesting devices based on AAOs combined with other materials involving a decisive energy/charge transfer dynamics. (paper)
Authors:
Makhal, Abhinandan; Sarkar, Soumik; Pal, Samir Kumar; [1]  Yan, Hongdan; Wulferding, Dirk; Cetin, Fatih; Lemmens, Peter [2] 
  1. Department of Chemical, Biological and Macromolecular Sciences, S N Bose National Centre for Basic Sciences, Block JD, Sector III, Salt Lake, Kolkata 700 098 (India)
  2. Institute for Condensed Matter Physics, TU Braunschweig, Mendelssohnstrasse 3, 38106 Braunschweig (Germany)
Publication Date:
Aug 03, 2012
Product Type:
Journal Article
Resource Relation:
Journal Name: Nanotechnology (Print); Journal Volume: 23; Journal Issue: 30; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; ALUMINIUM OXIDES; DEACTIVATION; DOPED MATERIALS; ELECTROCHEMISTRY; EXCITED STATES; GOLD; MEMBRANES; PHOTOLUMINESCENCE; POROUS MATERIALS; QUANTUM DOTS; QUANTUM WIRES; QUENCHING; SCANNING ELECTRON MICROSCOPY; SOLAR CELLS; STEADY-STATE CONDITIONS; SURFACE ENERGY; SYNTHESIS; THERMAL GRAVIMETRIC ANALYSIS; X-RAY DIFFRACTION
OSTI ID:
22018088
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0957-4484; TRN: GB12P8797104060
Availability:
Available from http://dx.doi.org/10.1088/0957-4484/23/30/305705
Submitting Site:
INIS
Size:
[8 page(s)]
Announcement Date:
Jan 11, 2013

Citation Formats

Makhal, Abhinandan, Sarkar, Soumik, Pal, Samir Kumar, Yan, Hongdan, Wulferding, Dirk, Cetin, Fatih, and Lemmens, Peter. Ultrafast excited state deactivation of doped porous anodic alumina membranes. United Kingdom: N. p., 2012. Web. doi:10.1088/0957-4484/23/30/305705.
Makhal, Abhinandan, Sarkar, Soumik, Pal, Samir Kumar, Yan, Hongdan, Wulferding, Dirk, Cetin, Fatih, & Lemmens, Peter. Ultrafast excited state deactivation of doped porous anodic alumina membranes. United Kingdom. doi:10.1088/0957-4484/23/30/305705.
Makhal, Abhinandan, Sarkar, Soumik, Pal, Samir Kumar, Yan, Hongdan, Wulferding, Dirk, Cetin, Fatih, and Lemmens, Peter. 2012. "Ultrafast excited state deactivation of doped porous anodic alumina membranes." United Kingdom. doi:10.1088/0957-4484/23/30/305705. https://www.osti.gov/servlets/purl/10.1088/0957-4484/23/30/305705.
@misc{etde_22018088,
title = {Ultrafast excited state deactivation of doped porous anodic alumina membranes}
author = {Makhal, Abhinandan, Sarkar, Soumik, Pal, Samir Kumar, Yan, Hongdan, Wulferding, Dirk, Cetin, Fatih, and Lemmens, Peter}
abstractNote = {Free-standing, bi-directionally permeable and ultra-thin anodic aluminum oxide (AAO) membranes establish attractive templates (host) for the synthesis of nano-dots and rods of various materials (guest). This is due to their chemical and structural integrity and high periodicity on length scales of 5-150 nm which are often used to host photoactive nano-materials for various device applications including dye-sensitized solar cells. In the present study, AAO membranes are synthesized by using electrochemical methods and a detailed structural characterization using FEG-SEM, XRD and TGA confirms the porosity and purity of the material. Defect-mediated photoluminescence quenching of the porous AAO membrane in the presence of an electron accepting guest organic molecule (benzoquinone) is studied by means of steady-state and picosecond/femtosecond-resolved luminescence measurements. Using time-resolved luminescence transients, we have also revealed light harvesting of complexes of porous alumina impregnated with inorganic quantum dots (Maple Red) or gold nanowires. Both the Foerster resonance energy transfer and the nano-surface energy transfer techniques are employed to examine the observed quenching behavior as a function of the characteristic donor-acceptor distances. The experimental results will find their relevance in light harvesting devices based on AAOs combined with other materials involving a decisive energy/charge transfer dynamics. (paper)}
doi = {10.1088/0957-4484/23/30/305705}
journal = {Nanotechnology (Print)}
issue = {30}
volume = {23}
journal type = {AC}
place = {United Kingdom}
year = {2012}
month = {Aug}
}