Jump to main content
Jump to site search

Issue 23, 2018
Previous Article Next Article

Lasing from dot-in-rod nanocrystals in planar polymer microcavities

Author affiliations

Abstract

Colloidal nanocrystals attract considerable attention in the field of light emitting devices thanks to their high fluorescence quantum yield, low amplified spontaneous emission (ASE) threshold, and spectral tunability via electronic structure engineering and surface functionalization. Combining polymer microcavities with colloidal nanocrystals as gain material promises a solution-based fabrication route to plastic laser cavities as well as applications in the field of smart flexible large area light sources and sensors. Here we demonstrate lasing from polymer microcavities embedding solution processable dot-in-rod (DiR) CdSe/CdS nanocrystals. Two highly reflective polymer dielectric mirrors are prepared by spin-coating of alternated layers of polyacrylic acid and poly(N-vinyl carbazole), with their photonic band gap tailored to the emission of the DiRs. The DiRs are enclosed in the polymer microcavity by drop-cast deposition on one mirror, followed by pressing the mirrors onto each other. We obtain excellent overlap of the ASE band of the DiRs with the photonic band gap of the cavity and observe optically pumped lasing at 640 nm with a threshold of about 50 μJ cm−2.

Graphical abstract: Lasing from dot-in-rod nanocrystals in planar polymer microcavities

Back to tab navigation

Supplementary files

Publication details

The article was received on 09 Feb 2018, accepted on 01 Apr 2018 and first published on 09 Apr 2018


Article type: Paper
DOI: 10.1039/C8RA01282B
Citation: RSC Adv., 2018,8, 13026-13033
  • Open access: Creative Commons BY-NC license
  •   Request permissions

    Lasing from dot-in-rod nanocrystals in planar polymer microcavities

    G. Manfredi, P. Lova, F. Di Stasio, P. Rastogi, R. Krahne and D. Comoretto, RSC Adv., 2018, 8, 13026
    DOI: 10.1039/C8RA01282B

    This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material and it is not used for commercial purposes.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements