Directional Lasing from Nanopatterned Halide Perovskite Nanowire

Zhizhchenko, Alexey; Cherepakhin, Artem; Masharin, Mikhail A.; Pushkarev, Anatoly P.; Kulinich, Sergei A.; Kuchmizhak, Aleksandr; Makarov, Sergey

doi:10.1021/acs.nanolett.1c03656

Cited by 41 publications

(36 citation statements)

References 45 publications

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“…Electrically and optically pumped semiconducting low threshold gain lasers based on solution-processable II–VI/III–V semiconductors − as well as hybrid organic–inorganic − and all inorganic metal halide perovskite − nanostructures (quantum dots, nanoplatelets, nanorods, and nanocrystals) have been a subject of intense research, primarily due to the rapid advances in laser technology. The cost-effective synthesis protocols and easy integration with semiconductor devices in the existing micro- and nanoelectronics technology framework make them much more attractive.…”

mentioning

confidence: 99%

Facet Engineering for Amplified Spontaneous Emission in Metal Halide Perovskite Nanocrystals

Bera

Shrivastava

et al. 2022

Nano Lett.

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Auger recombination and thermalization time are detrimental in reducing the gain threshold of optically pumped semiconductor nanocrystal (NC) lasers for future on-chip nanophotonic devices. Here, we report the design strategy of facet engineering to reduce the gain threshold of amplified spontaneous emission by manyfold in NCs of the same concentration and edge length. We achieved this hallmark result by controlling the Auger recombination rates dominated by processes involving NC volume and thermalization time to the emitting states by optimizing the number of facets from 6 (cube) to 12 (rhombic dodecahedron) and 26 (rhombicuboctahedrons) in CsPbBr3 NCs. For instance, we demonstrate a 2-fold reduction in Auger recombination rates and thermalization time with increased number of facets. The gain threshold can be further reduced ∼50% by decreasing the sample temperature to 4 K. Our systematic studies offer a new method to reduce the gain threshold that ultimately forms the basis of nanolasers.

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mentioning

confidence: 99%

Facet Engineering for Amplified Spontaneous Emission in Metal Halide Perovskite Nanocrystals

Bera

Shrivastava

et al. 2022

Nano Lett.

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“…The thermal effect plays a critical role in the structure modifications of perovskites with continuous wave lasers or nanosecond lasers 50 . In another case, femtosecond laser allows for "cool" processing of the material surface, during which the thermal effect can be negligible, and is suitable for high-resolution patterning and ablating 51−53 .…”

Section: Laser Ablationmentioning

confidence: 99%

Photo-processing of perovskites: current research status and challenges

Tan¹,

Sun²,

Li³

et al. 2022

OES

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The past two decades have seen a drastic progress in the development of semiconducting metal-halide perovskites (MHPs) from both the fundamentally scientific and technological points of view. The excellent optoelectronic properties and device performance make perovskites very attractive to the researchers in materials, physics, chemistry and so on. To fully explore the potential of perovskites in the applications, various techniques have been demonstrated to synthesize perovskites, modify their structures, and create patterns and devices. Among them, photo-processing has been revealed to be a facile and general technique to achieve these aims. In this review, we discuss the mechanisms of photoprocessing of perovskites and summarize the recent progress in the photo-processing of perovskites for synthesis, patterning, ion exchange, phase transition, assembly, and ion migration and redistribution. The applications of photo-processed perovskites in photovoltaic devices, lasers, photodetectors, light-emitting diodes (LEDs), and optical data storage and encryption are also discussed. Finally, we provide an outlook on photo-processing of perovskites and propose the promising directions for future researches. This review is of significance to the researches and applications of perovskites and also to uncover new views on the light-matter interactions.

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“…Over the past decade, the scientific community around the globe has witnessed the rise of lead halide perovskites (LHPs). The members of this family of ionic semiconductors possessing an ABX 3 structure (A = MA + (methylammonium), FA + (formamidinium), Cs + ; B = Pb 2+ ; X = Cl – , Br – , I – ) are being successfully employed for meeting the demands of state-of-the-art optoelectronics and photonics, in particular high-performance solar cells, − light-emitting diodes, − photodetectors, − piezoelectric nanogenerators, − micro- and nanolasers, − metasurfaces, − optical sensors, , etc. Such a vast diversification of LHPs stems from their outstanding structural, optical, and electrical properties: namely, shallow trap states that do not inhibit, to some extent, charge carrier radiative recombination, strong room-temperature excitonic absorption and luminescence, moderate refractive index ( n ≈ 2.1–2.5) affording high- Q optical resonances in micro- and nanostructures, and high charge carrier mobility …”

Section: Introductionmentioning

confidence: 99%

Perovskite Nanowire Laser for Hydrogen Chloride Gas Sensing

et al. 2023

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Detection of hazardous volatile organic and inorganic species is a crucial task for addressing human safety in the chemical industry. Among these species, there are hydrogen halides (HX, X = Cl, Br, I) vastly exploited in numerous technological processes. Therefore, the development of a cost-effective, highly sensitive detector selective to any HX gas is of particular interest. Herein, we demonstrate the optical detection of hydrogen chloride gas with solution-processed halide perovskite nanowire lasers grown on a nanostructured alumina substrate. An anion exchange reaction between a CsPbBr3 nanowire and vaporized HCl molecules results in the formation of a structure consisting of a bromide core and thin mixed-halide CsPb(Cl,Br)3 shell. The shell has a lower refractive index than the core does. Therefore, the formation and further expansion of the shell reduce the field confinement for experimentally observed laser modes and provokes an increase in their frequency. This phenomenon is confirmed by the coherency of the data derived from XPS spectroscopy, EDX analysis, in situ XRD experiments, HRTEM images, and fluorescent microspectroscopy, as well as numerical modeling for Cl– ion diffusion and the shell-thickness-dependent spectral position of eigenmodes in a core–shell perovskite nanowire. The revealed optical response allows the detection of HCl molecules in the 5–500 ppm range. The observed spectral tunability of the perovskite nanowire lasers can be employed not only for sensing but also for their precise spectral tuning.

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Directional Lasing from Nanopatterned Halide Perovskite Nanowire

Cited by 41 publications

References 45 publications

Facet Engineering for Amplified Spontaneous Emission in Metal Halide Perovskite Nanocrystals

Facet Engineering for Amplified Spontaneous Emission in Metal Halide Perovskite Nanocrystals

Photo-processing of perovskites: current research status and challenges

Perovskite Nanowire Laser for Hydrogen Chloride Gas Sensing

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