Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance upgrade on Thursday 4th of May 2017 from 8.00am to 9.00am (BST).

During this time our websites will be offline temporarily. If you have any questions please use the feedback button on this page. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 43, 2016
Previous Article Next Article

Controllable lasing performance in solution-processed organic–inorganic hybrid perovskites

Author affiliations

Abstract

Solution-processed organic–inorganic perovskites are fascinating due to their remarkable photo-conversion efficiency and great potential in the cost-effective, versatile and large-scale manufacturing of optoelectronic devices. In this paper, we demonstrate that the perovskite nanocrystal sizes can be simply controlled by manipulating the precursor solution concentrations in a two-step sequential deposition process, thus achieving the feasible tunability of excitonic properties and lasing performance in hybrid metal-halide perovskites. The lasing threshold is at around 230 μJ cm−2 in this solution-processed organic–inorganic lead-halide material, which is comparable to the colloidal quantum dot lasers. The efficient stimulated emission originates from the multiple random scattering provided by the micro-meter scale rugged morphology and polycrystalline grain boundaries. Thus the excitonic properties in perovskites exhibit high correlation with the formed morphology of the perovskite nanocrystals. Compared to the conventional lasers normally serving as a coherent light source, the perovskite random lasers are promising in making low-cost thin-film lasing devices for flexible and speckle-free imaging applications.

Graphical abstract: Controllable lasing performance in solution-processed organic–inorganic hybrid perovskites

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 14 Jul 2016, accepted on 08 Oct 2016 and first published on 10 Oct 2016


Article type: Paper
DOI: 10.1039/C6NR05561C
Citation: Nanoscale, 2016,8, 18483-18488
  •   Request permissions

    Controllable lasing performance in solution-processed organic–inorganic hybrid perovskites

    T. S. Kao, Y. Chou, K. Hong, J. Huang, C. Chou, H. Kuo, F. Chen and T. Lu, Nanoscale, 2016, 8, 18483
    DOI: 10.1039/C6NR05561C

Search articles by author