Vertical Cavity Biexciton Lasing in 2D Dodecylammonium Lead Iodide Perovskites
Authors
Price, MB
Abolins, Haralds
Nasrallah, Iyad
Publication Date
2018-11-05Journal Title
Advanced Optical Materials
ISSN
2195-1071
Publisher
Wiley
Volume
6
Issue
21
Type
Article
Metadata
Show full item recordCitation
Booker, E., Price, M., Budden, P., Abolins, H., Del Valle-Inclan Redondo, Y., Eyre, L., Nasrallah, I., et al. (2018). Vertical Cavity Biexciton Lasing in 2D Dodecylammonium Lead Iodide Perovskites. Advanced Optical Materials, 6 (21) https://doi.org/10.1002/adom.201800616
Abstract
Layered Ruddlesden-Popper-type (2D) metal-halide perovskites exhibit markedly increased exciton binding energies, exceeding 150 meV, compared to their 3D counterparts. Many-body physics, enabled by Coulomb interactions, play a strong role and raises the biexciton binding energy to 50 meV. We report photoluminescence at a range of temperatures and carrier concentrations in thin films of the layered perovskite material (C12H25NH3)2PbI4. We directly observe biexcitons up to a sample temperature of 225 K. We construct an optical microcavity (comprising a distributed Bragg reflector and a metal mirror), with photonic resonances tuned near to the biexciton energy. We observe optically-pumped biexciton lasing up to 125 K, with a threshold peak excitation density of 5.6 × 1018 cm-3. The demonstration of biexciton lasing above liquid nitrogen temperatures is a crucial step for the application of layered perovskites in photonic applications.
Relationships
Related research output: https://doi.org/10.17863/CAM.25934
Sponsorship
Engineering and Physical Sciences Research Council (EP/L01551X/1)
Engineering and Physical Sciences Research Council (EP/P02484X/1)
Engineering and Physical Sciences Research Council (EP/M005143/1)
Embargo Lift Date
2100-01-01
Identifiers
External DOI: https://doi.org/10.1002/adom.201800616
This record's URL: https://www.repository.cam.ac.uk/handle/1810/279638
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