Three-photon-induced upconversion luminescence of lead bromide CH3NH3PbBr3 perovskites

In this paper, upconversion luminescence from CH 3 NH 3 PbBr 3 perovskite under pulsed laser illumination is reported. Excitation of bromide perovskite powders with a UV wavelength results in green PL bands at 562 nm. Infrared-to-visible upconversion luminescence is demonstrated in CH 3 NH 3 PbBr 3...

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Bibliographic Details
Published in:Applied physics. B, Lasers and optics Lasers and optics, 2017-10, Vol.123 (10), p.1-6, Article 257
Main Authors: Bagherzadeh-Khajehmarjan, Elnaz, Mirershadi, Soghra, Ahmadi-Kandjani, Sohrab
Format: Article
Language:English
Subjects:
Applied physics
Emission spectra
Engineering
Fluorescence
Lasers
Luminescence
Optical Devices
Optics
Perovskites
Photon absorption
Photonics
Physical Chemistry
Physics
Physics and Astronomy
Quantum Optics
Upconversion
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Summary:In this paper, upconversion luminescence from CH 3 NH 3 PbBr 3 perovskite under pulsed laser illumination is reported. Excitation of bromide perovskite powders with a UV wavelength results in green PL bands at 562 nm. Infrared-to-visible upconversion luminescence is demonstrated in CH 3 NH 3 PbBr 3 hybrid perovskites under 1064 nm nanosecond pulsed laser irradiation at room temperature. The shapes of both emission spectra are nearly identical, with a maximum at 562 nm. The green fluorescence emission is discernible by the naked eye. A remarkable feature of CH 3 NH 3 PbBr 3 perovskite is the fact that fluorescence emission can be induced UV or NIR wavelength through different absorption processes. Upconversion luminescence is identified by measuring the NIR pump beam intensity dependence of luminescence which illustrates that the upconverted emission is induced by three-photon absorption process. The quadratic dependency of PL peak position on incident intensity is also another verification for the three-photon absorption process.
ISSN:0946-2171
1432-0649
DOI:10.1007/s00340-017-6837-1