How lasing happens in CsPbBr3 perovskite nanowires

Schlaus, Andrew; Spencer, Michael S.; Miyata, Kiyoshi; Liu, Fang; Wang, Xiaoxia; Datta, Ipshita; Lipson, Michal; Pan, Anlian; Zhu, Xiaoyang

doi:10.1038/s41467-018-07972-7

Cited by 191 publications

(213 citation statements)

References 41 publications

(55 reference statements)

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“…As shown in Figure 2F, similar rapid decay corresponding to the stimulated emission process of <30 ps was measured by TRPL for CsPbX 3 NWs under strong excitation, and the electronhole plasma mechanism was responsible for the stimulated emission [35]. More recently, Schlaus et al further reported that the CsPbBr 3 NW lasing originated from the stimulated emission of an electron-hole plasma by TRPL and transient reflectance [39]. They observed an anomalous blue-shifting of the lasing gain profile with time up to 25 ps and assigned this as a signature for lasing involving plasmon emission.…”

Section: Optical Gainsupporting

confidence: 72%

Advances in inorganic and hybrid perovskites for miniaturized lasers

Liu

Huang

et al. 2020

Nanophotonics

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AbstractThe rapid advancement of perovskite-based optoelectronics devices has caught the world’s attention due to their outstanding properties, such as long carrier lifetime, low defect trap density, large absorption coefficient, narrow linewidth and high optical gain. Herein, the photonic lasing properties of perovskites are reviewed since the first stimulated emission of perovskites observed in 2014. The review is mainly focused on 3D structures based on their inherently active microcavities and externally passive microcavities of the perovskites. First, the fundamental properties in terms of crystal structure and optical characteristics of perovskites are reviewed. Then the perovskite lasers are classified into two sections based on the morphology features: the ability/inability to support lasing behaviors by themselves. Every section is further divided into two kinds of cavities according to the light reflection paths (Standing wave for the Fabry–Pérot cavity and travelling wave for the Whispering-Gallery-Mode cavity). The lasing performance involves fabrication methods, cavity sizes, thresholds, quality factors, pumping sources, etc. Finally, some challenges and prospects for perovskite lasers are given.

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Section: Optical Gainsupporting

confidence: 72%

Advances in inorganic and hybrid perovskites for miniaturized lasers

Liu

Huang

et al. 2020

Nanophotonics

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“…High power conversion efficiency (PCE) can be achieved due to the large absorption coefficient, broadband absorption spectrum, and long carrier lifetime in these inorganic perovskites. CsPbX 3 are not only efficient light‐harvesting materials, but also light‐emitting materials with extremely high fluorescence quantum yield, narrow emission bandwidth, low lasing threshold, and tunable bandgap, which make them strong contenders for high‐performance of light emitting diodes (LEDs), lasers, and photodetectors . CsPbX 3 are also proved to be excellent nonlinear optical absorbers with strong third order nonlinear susceptibility (≈10 −10 esu) and large two‐photon absorption (TPA) cross‐sections (≈10 5 GM), which are two orders of magnitude larger than those of traditional quantum dots .…”

Section: Introductionmentioning

confidence: 99%

High‐Order Shift Current Induced Terahertz Emission from Inorganic Cesium Bromine Lead Perovskite Engendered by Two‐Photon Absorption

Huang

et al. 2019

Adv Funct Materials

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High-order nonlinear optical phenomena are interesting from a fundamental point of view as they reveal intrinsic symmetries of the materials. Potentially they can also be used for practical optoelectronic applications. High-order shift current is one of these phenomena, and yet it has never been detected in experiments, primarily due to the difficulty in conventional contact detection. In this work, the shift current due to the two-photon absorption (TPA) from all-inorganic perovskite CsPbBr 3 is first observed by a contactless and nondestructive terahertz (THz) emission method. The results reveal that the THz emission is dominated by a high-order shift current (fourth-order nonlinear optical effect) with the below-bandgap photon energy of femtosecond laser excitation. The high-order shift current origins from the broken inversion symmetry induced by the dynamic stereochemical activity of the Pb 2+ lone pair. A microscopic TPA-assisted nonlinear optical model is presented to describe the photophysical process of the THz emission. The model matches well with the quadratic pump fluence and angular dependence of the THz emission. This work can not only open a new venue for the all-inorganic perovskite-based nonlinear optoelectronics and THz devices, but also afford a THz technology for the high-order nonlinear effect analysis.

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“…However, very recently, the authors have reported their newest results on the lasing mechanisms and recognized that it was not actually polariton lasing in CsPbBr 3 perovskite NWs. From systematically investigations on the time‐domain lasing and many‐body interaction in CsPbBr 3 perovskite NWs, they have demonstrated that the lasing was neither due to excitons nor exciton–polaritons, but originated from the stimulated emission of n‐EHP coupled with plasmons . The authors proposed an n‐EHP model for plasmon‐coupled emission in these CsPbBr 3 NW lasers and further established that the lasing mode distribution inside the NW depended closely on the excitation density and time.…”

Section: Cw Lasing In Perovskite Nwsmentioning

confidence: 99%

“…Moreover, some researchers proposed that an electron–hole plasma (EHP) mechanism is responsible for the lasing in perovskites . Very recently, Zhu and co‐workers have demonstrated that the lasing in CsPbBr 3 perovskite NW lasers was due to stimulated emission from a nondegenerate electron–hole plasma (n‐EHP) coupled with plasmons rather than from excitons or exciton polaritons . A n‐EHP model was proposed for these NW lasers, and the criterion for population inversion is defined by

μ_{normale} + μ_{normalh} > E_{e, c} (k) + E_{h, v} (k) - ℏ ω_{normalp}

where µ e , µ h represent the chemical potentials of electron and hole, and E e,c , E h,v express the kinetic energies of electron and hole in valence and conduction bands, respectively; while ω p stands for the plasmon frequency, which may be approximated by

ω_{normalp} = \sqrt{\frac{n_{normale} e^{normal2}}{m * ε_{eff} ε_{normalo}}}

where n e and m * are the number density and band mass of electrons in the conduction band, ε eff and ε o stand for the effective dielectric constant and vacuum permittivity, respectively.…”

Section: Introductionmentioning

confidence: 99%

Continuous‐Wave Pumped Perovskite Lasers

Zhong

Zhang

et al. 2019

Advanced Optical Materials

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Continuous‐wave (CW) operated lasers are regarded as a stepping stone to the development of electrically driven lasers and crucial for practical application in high‐density integrated optoelectronic devices. Recently, metallic halide perovskites are demonstrated as excellent gain materials for CW lasers owing to their large optical absorption coefficient, low defect density, long diffusion length, and suppressed Auger recombination rate. Here, the latest research advances on CW pumped perovskite lasers are reviewed. First, the recent research advances on CW lasing in perovskite thin film are highlighted. Then, CW lasing in CsPbBr3 perovskite nanowires is briefly introduced. The comparison of lasing thresholds in CW perovskite lasers is made and discussed. Finally, the importance of such perovskite CW lasers is emphasized, while a perspective on the potential opportunities and remaining challenges of perovskite‐based CW lasers is proposed.

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How lasing happens in CsPbBr3 perovskite nanowires

Cited by 191 publications

References 41 publications

Advances in inorganic and hybrid perovskites for miniaturized lasers

Advances in inorganic and hybrid perovskites for miniaturized lasers

High‐Order Shift Current Induced Terahertz Emission from Inorganic Cesium Bromine Lead Perovskite Engendered by Two‐Photon Absorption

Continuous‐Wave Pumped Perovskite Lasers

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