The recombination mechanisms leading to amplified spontaneous emission at the true-green wavelength in CH3NH3PbBr3 perovskites

Davide Priante; Ibrahim Dursun; Mohd Sharizal Alias; Dong Shi; Vasily Melnikov; Tien Khee Ng; Omar F. Mohammed; Osman Bakr; Boon S. Ooi

doi:10.1063/1.4913463

The recombination mechanisms leading to amplified spontaneous emission at the true-green wavelength in CH3NH3PbBr3 perovskites

Davide Priante, Ibrahim Dursun, Mohd Sharizal Alias, Dong Shi, Vasily Melnikov, Tien Khee Ng, Omar F. Mohammed, Osman Bakr, Boon S. Ooi

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Abstract

We investigated the mechanisms of radiative recombination in a CH3NH3PbBr3 hybrid perovskite material using low-temperature, power-dependent (77K), and temperature-dependent photoluminescence (PL) measurements. Two bound-excitonic radiative transitions related to grain size inhomogeneity were identified. Both transitions led to PL spectra broadening as a result of concurrent blue and red shifts of these excitonic peaks. The red-shifted bound-excitonic peak dominated at high PL excitation led to a true-green wavelength of 553nm for CH3NH3PbBr3 powders that are encapsulated in polydimethylsiloxane. Amplified spontaneous emission was eventually achieved for an excitation threshold energy of approximately 350μJ/cm2. Our results provide a platform for potential extension towards a true-green light-emitting device for solid-state lighting and display applications.

Original language	English (US)
Pages (from-to)	081902
Journal	Applied Physics Letters
Volume	106
Issue number	8
DOIs	https://doi.org/10.1063/1.4913463
State	Published - Feb 23 2015

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https://repository.kaust.edu.sa/bitstream/10754/346682/1/1.4913463.pdf

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title = "The recombination mechanisms leading to amplified spontaneous emission at the true-green wavelength in CH3NH3PbBr3 perovskites",

abstract = "We investigated the mechanisms of radiative recombination in a CH3NH3PbBr3 hybrid perovskite material using low-temperature, power-dependent (77K), and temperature-dependent photoluminescence (PL) measurements. Two bound-excitonic radiative transitions related to grain size inhomogeneity were identified. Both transitions led to PL spectra broadening as a result of concurrent blue and red shifts of these excitonic peaks. The red-shifted bound-excitonic peak dominated at high PL excitation led to a true-green wavelength of 553nm for CH3NH3PbBr3 powders that are encapsulated in polydimethylsiloxane. Amplified spontaneous emission was eventually achieved for an excitation threshold energy of approximately 350μJ/cm2. Our results provide a platform for potential extension towards a true-green light-emitting device for solid-state lighting and display applications.",

author = "Davide Priante and Ibrahim Dursun and Alias, {Mohd Sharizal} and Dong Shi and Vasily Melnikov and Ng, {Tien Khee} and Mohammed, {Omar F.} and Osman Bakr and Ooi, {Boon S.}",

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doi = "10.1063/1.4913463",

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TY - JOUR

T1 - The recombination mechanisms leading to amplified spontaneous emission at the true-green wavelength in CH3NH3PbBr3 perovskites

AU - Priante, Davide

AU - Dursun, Ibrahim

AU - Alias, Mohd Sharizal

AU - Shi, Dong

AU - Melnikov, Vasily

AU - Ng, Tien Khee

AU - Mohammed, Omar F.

AU - Bakr, Osman

AU - Ooi, Boon S.

N1 - KAUST Repository Item: Exported on 2020-10-01

PY - 2015/2/23

Y1 - 2015/2/23

N2 - We investigated the mechanisms of radiative recombination in a CH3NH3PbBr3 hybrid perovskite material using low-temperature, power-dependent (77K), and temperature-dependent photoluminescence (PL) measurements. Two bound-excitonic radiative transitions related to grain size inhomogeneity were identified. Both transitions led to PL spectra broadening as a result of concurrent blue and red shifts of these excitonic peaks. The red-shifted bound-excitonic peak dominated at high PL excitation led to a true-green wavelength of 553nm for CH3NH3PbBr3 powders that are encapsulated in polydimethylsiloxane. Amplified spontaneous emission was eventually achieved for an excitation threshold energy of approximately 350μJ/cm2. Our results provide a platform for potential extension towards a true-green light-emitting device for solid-state lighting and display applications.

AB - We investigated the mechanisms of radiative recombination in a CH3NH3PbBr3 hybrid perovskite material using low-temperature, power-dependent (77K), and temperature-dependent photoluminescence (PL) measurements. Two bound-excitonic radiative transitions related to grain size inhomogeneity were identified. Both transitions led to PL spectra broadening as a result of concurrent blue and red shifts of these excitonic peaks. The red-shifted bound-excitonic peak dominated at high PL excitation led to a true-green wavelength of 553nm for CH3NH3PbBr3 powders that are encapsulated in polydimethylsiloxane. Amplified spontaneous emission was eventually achieved for an excitation threshold energy of approximately 350μJ/cm2. Our results provide a platform for potential extension towards a true-green light-emitting device for solid-state lighting and display applications.

UR - http://hdl.handle.net/10754/346682

UR - http://scitation.aip.org/content/aip/journal/apl/106/8/10.1063/1.4913463

UR - http://www.scopus.com/inward/record.url?scp=84923334941&partnerID=8YFLogxK

U2 - 10.1063/1.4913463

DO - 10.1063/1.4913463

M3 - Article

SN - 0003-6951

VL - 106

SP - 081902

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 8

ER -

The recombination mechanisms leading to amplified spontaneous emission at the true-green wavelength in CH3NH3PbBr3 perovskites

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