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Exciton switching and Peierls transitions in hybrid inorganic-organic self-assembled quantum wells

Appl. Phys. Lett. 95, 173305 (2009); doi:10.1063/1.3257725

Published 30 October 2009

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K. Pradeesh,1 J. J. Baumberg,2 and G. Vijaya Prakash1
1Department of Physics, Nanophotonics Laboratory, Indian Institute of Technology Delhi, New Delhi 110016, India
2Nanophotonics Centre, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, United Kingdom
The switching behavior of exciton absorption and photoluminescence is systematically explored in hybrid inorganic-organic multiple quantum well structures, based on (C12H25NH3)2PbI4 thin films and single crystals. Two structural phases found between 15 and 75 °C, based on orthorhombic and monoclinic unit cells, show different optical excitons which are demonstrated to arise from the reversible crumpling of the quantum well layers. Structural flips can be controlled by annealing or film thickness, with different thermal hysteresis behavior observed for single crystals and thin films. ©2009 American Institute of Physics
History: Received 14 August 2009; accepted 9 October 2009; published 30 October 2009
Permalink: http://link.aip.org/link/?APPLAB/95/173305/1
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KEYWORDS and PACS

Keywords
PACS
  • 71.35.-y
    Excitons and related phenomena
  • 68.65.Fg
    Quantum wells (structure and nonelectronic properties)
  • 78.55.-m
    Photoluminescence, properties and materials (condensed matter)
  • 78.67.De
    Optical properties of quantum wells
  • 61.72.Cc
    Kinetics of defect formation and annealing
  • 73.21.Fg
    Quantum wells (electron states/collective excitations)
  • YEAR: 2009

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PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
Publisher:
AIP is a member of CrossRef AIP

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