• Please log in or register to access this feature.

Contributed Article

Morphology of contact printed colloidal quantum dots in organic semiconductor films: Implications for QD-LEDs

  1. Katherine E. Aidala1,*,
  2. Matthew J. Panzer2,
  3. Polina O. Anikeeva3,
  4. Jonathan E. Halpert4,
  5. Moungi G. Bawendi4,
  6. Vladimir Bulović3

Article first published online: 17 DEC 2010

DOI: 10.1002/pssc.201000667

Issue

physica status solidi (c)

physica status solidi (c)

Special Issue: 9th International Conference on Excitonic and Photonic Processes in Condensed and Nano Materials (EXCON'10)

Volume 8, Issue 1, pages 120–123, January 2011

Additional Information

How to Cite

Aidala, K. E., Panzer, M. J., Anikeeva, P. O., Halpert, J. E., Bawendi, M. G. and Bulović, V. (2011), Morphology of contact printed colloidal quantum dots in organic semiconductor films: Implications for QD-LEDs. Phys. Status Solidi C, 8: 120–123. doi: 10.1002/pssc.201000667

Author Information

  1. 1

    Department of Physics, Mount Holyoke College, South Hadley, Massachusetts 01075, USA

  2. 2

    Department of Chemical and Biological Engineering, Tufts University, Medford, Massachusetts 02155, USA

  3. 3

    Department of Electrical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA

  4. 4

    Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139. USA

*Phone: 413-538-2234, Fax: 413-538-2357

Publication History

  1. Issue published online: 19 JAN 2011
  2. Article first published online: 17 DEC 2010
  3. Manuscript Accepted: 8 NOV 2010
  4. Manuscript Revised: 17 OCT 2010
  5. Manuscript Received: 11 JUL 2010

Funded by

  • the Institute for Solider Nanotechnologies. Grant Number: DAAD-19-02-0002
  • Presidential Early Career Award for Scientists and Engineers
  • National Science Foundation. Grant Number: DMR-02-13282

SEARCH

SEARCH BY CITATION

ARTICLE TOOLS

Get PDF (210K)

Keywords:

  • energy-transfer;
  • electroluminescence;
  • nanocrystals;
  • monolayers;
  • morphology

Abstract

Quantum dot light emitting devices (QD-LEDs) con-sist of a monolayer of QDs sandwiched between a hole transporting layer (HTL) and electron transporting layer (ETL) of organic materials. These hybrid devices emit with the narrow bandwidth characteristic of the QDs. The precise position of the QD layer, relative to the interface between the ETL and HTL, can affect the quantum efficiency of the device on the scale of 10 nm or less.

Motivated by this observation, the exact nature of the morphology of contact printed and self-assembled QDs on typical organic materials is investigated. The QDs are substantially pressed into the organic material, to a somewhat greater extent when contact printed compared to self-assembled structures. Measured device characteristics from samples made with the two methods are consistent with these observations (© 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

Get PDF (210K)