High Photoluminescence Efficiency and Optically Pumped Lasing in Solution-Processed Mixed Halide Perovskite Semiconductors
View / Open Files
Authors
Pathak, Sandeep
Klintberg, Lina E
Jarausch, David-Dominik
Higler, Ruben
Hüttner, Sven
Leijtens, Tomas
Snaith, Henry J
Atatüre, Mete
Publication Date
2014-03-24Journal Title
Journal of Physical Chemistry Letters
ISSN
1948-7185
Publisher
American Chemical Society
Volume
5
Pages
1421-1426
Language
English
Type
Article
Metadata
Show full item recordCitation
Deschler, F., Price, M., Pathak, S., Klintberg, L. E., Jarausch, D., Higler, R., Hüttner, S., et al. (2014). High Photoluminescence Efficiency and Optically Pumped Lasing in Solution-Processed Mixed Halide Perovskite Semiconductors. Journal of Physical Chemistry Letters, 5 1421-1426. https://doi.org/10.1021/jz5005285
Abstract
The study of the photo-physical properties of organic-metallic lead-halide perovskites, which demonstrate excellent photovoltaic performance in devices with electron- and hole-accepting layers, helps to understand their charge photo-generation and recombination mechanism and unravels their potential for other optoelectronic applications. We report surprisingly high photoluminescence (PL) quantum efficiencies, up to 70%, in these solution-processed crystalline films. We find that photoexcitation in the pristine CH3NH3PbI3-xClx perovskite results in free charge carrier formation within 1ps, and that these free charge carriers undergo bimolecular recombination on timescales of 10s to 100s of nsecs. To exemplify the high luminescence yield of the CH3NH3PbI3-xClx perovskite, we construct and demonstrate the operation of an optically-pumped vertical cavity laser comprising a layer of perovskite between a dielectric mirror and evaporated gold top mirrors. These long carrier lifetimes together with exceptionally high luminescence yield are unprecedented in such simply prepared inorganic semiconductors and we note that these properties are ideally suited for photovoltaic diode operation.
Keywords
Mixed-halide lead perovskites, spectroscopy, lasing, photovoltaics, charge generation
Sponsorship
We thank the Engineering and Physical Sciences Research Council, and the Winton Programme (Cambridge) for the Physics of Sustainability for funding. M.P. wants to thank the Cambridge Commonwealth Trust and the Rutherford Foundation of New Zealand for funding.
Funder references
EPSRC (EP/G060738/1)
Identifiers
External DOI: https://doi.org/10.1021/jz5005285
This record's URL: https://www.repository.cam.ac.uk/handle/1810/245468
Rights
DSpace@Cambridge license, Attribution 2.0 UK: England & Wales, Creative Commons Attribution License 2.0 UK
Licence URL: http://creativecommons.org/licenses/by/2.0/uk/