Space-resolved light emitting and lasing behaviors of crystalline perovskites upon femtosecond laser ablation

Rajan, Rahul A.; Huang, Tao; Yu, Weili; Yang, Jianjun

doi:10.1016/j.mtphys.2023.101000

Cited by 8 publications

(4 citation statements)

References 53 publications

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“…The increased PL intensity observed in the laser-irradiated area was attributed to PbI 2 . Rajan et al [215] recently studied the ablation of the MAPbBr 3 crystals and films with intense fs-IR laser pulses, finding an increase in the amplified stimulated emission and random lasing behavior in the laser-modified areas subjected to laser-induced morphological and structural modifications. Experiments with CW laser exposure of MAPbI 3 revealed in formation of PbO x , I 2 , and its oxides [216] which is a reasonable consequence of the extremely long laser heating.…”

Section: Fundamentals Of Pulsed Laser Ablation Of Halide Perovskitesmentioning

confidence: 99%

Advanced Laser Nanofabrication Technologies for Perovskite Photonics

Cherepakhin,

Zhizhchenko,

Khmelevskaia

et al. 2024

Advanced Optical Materials

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Halide perovskites have become a versatile platform not only for optoelectronic devices but also for modern optics and nanophotonics. Perovskite nano‐ and micro‐particles, metasurfaces, and photonic crystals demonstrate their applicability for directional enhanced photo‐ and electro‐luminescence, lasing, as well as for improving the performance of optoelectronic devices. However, ionic nature makes perovskites water soluble, while their high sensitivity to diverse chemicals complicates their patterning toward the formation of functional, high‐quality nanostructures. Here, recent progress on emerging laser technologies for processing and nanopatterning of halide perovskites, as well as their applications in designing advanced light‐emitting systems and controlling light at the nanoscale is overviewed. Special emphasis is made on the processes underlying the interaction of laser radiation with perovskites to disclose new avenues for their surface and volume modification with ultra‐high precision and a high degree of material's property control.

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Section: Fundamentals Of Pulsed Laser Ablation Of Halide Perovskitesmentioning

confidence: 99%

Advanced Laser Nanofabrication Technologies for Perovskite Photonics

Cherepakhin,

Zhizhchenko,

Khmelevskaia

et al. 2024

Advanced Optical Materials

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“…Rather than molecular modifications, recent findings have unveiled a new route for modulating perovskite structures through fs-laser shock processing. , This approach is similar to the pressure-induced anisotropic deformation, , capitalizing on the inherent soft lattice nature of perovskites. − By directing a high-energy-density fs-laser beam onto the (001) facet of a 2D OIHPs, the resulting plasma recoil momentum induces a pulse pressure and therefore reduces the interlayer distances. The reduction in distance strengthens interaction between organic barrier layers, subsequently mitigating the dielectric confinement.…”

Section: Dielectric Engineering Of Oihps For Emerging Applicationsmentioning

confidence: 99%

Dielectric Engineering of 2D Organic–Inorganic Hybrid Perovskites

Chen,

Yu,

Xing

et al. 2023

ACS Energy Lett.

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Manipulating excitons in semiconductors has driven the evolution of today's optoelectronic and photovoltaic devices. Engineering the dielectric constant, a key parameter that is highly associated with the Coulomb force of excitons, has recently emerged as a fresh avenue to regulate excitons from the root. Unlike three-dimensional (3D) bulk semiconductors featuring uniformly distributed dielectric constants, the dielectric constants of two-dimensional (2D) layered semiconductors exhibit spatial variability. Particularly, organic−inorganic hybrid perovskites (OIHPs) assembled with alternating organic and inorganic layers show a cyclic variation in the dielectric property, which substantially impacts exciton dynamics, including recombination and separation, offering an opportunity for the regulation of exciton-related physical attributes by dielectric engineering and the cutting-edge applications thereof. This Review documents the recent advances in the rational design of organic and inorganic constituents of 2D OIHPs for dielectric engineering. We show that dielectrically engineered OIHPs are pivotal in driving the advancements in optoelectrical and photovoltaic applications.

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“…Laser technology is widely employed in the postprocessing of halide perovskite due to its high speed and exceptional controllability. [118][119][120] Loh and co-workers used laser annealing to control the interface strain and achieve the structure ordereddisordered cycle of (CH 3 (CH 2 ) 3 NH 3 ) 2 (CH 3 NH 3 ) nÀ1 Pb n I 3nþ1 (n = 1À4) Ruddlesden-Popper perovskites successfully reduced the dark current of the devices via excitonic energy modulation (Figure 8c). [121] Research on the laser-induced interaction between carriers and polar lattice of halide perovskite holds the promise of providing theoretical guidance for achieving long-term light stability and improved efficiency of photoelectronic devices.…”

Section: Tensile Strain Compensationmentioning

confidence: 99%

Strain Regulation and Photophysical Properties in Halide Perovskite

Song,

Lou,

Deng

et al. 2023

Solar RRL

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Perovskite solar cells (PSCs) are regarded as the most promising new generation of green energy technology due to their outstanding device performance and simple processing technology. The strain in the active layer of PSCs is primarily caused by lower inter‐ionic and inter‐crystal forces, leading to an increase in defect density and high recombination of carriers, which can negatively impact the performance and stability of perovskite devices. In this review, the origins of strain in perovskite film of solution processing are revealed by conducting strain tests and characterizing photophysical processes. The impacts of strain on optical and electrical properties are summarized, including its effects on molecular interaction force, band structure, defect formation energy, activation energy of ion migration, phase segregation, and phase transition. To mitigate these negative effects, the review introduces several methods for modulating strain in perovskite films, including crystallization, component tailoring, adding additives, and modifying contact layers, which are aimed at improving carrier transport and collection efficiency. We believe that these approaches will provide scientists with new ways of thinking and system schemes for improving the performance and stability of perovskite solar cells.This article is protected by copyright. All rights reserved.

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Space-resolved light emitting and lasing behaviors of crystalline perovskites upon femtosecond laser ablation

Cited by 8 publications

References 53 publications

Advanced Laser Nanofabrication Technologies for Perovskite Photonics

Advanced Laser Nanofabrication Technologies for Perovskite Photonics

Dielectric Engineering of 2D Organic–Inorganic Hybrid Perovskites

Strain Regulation and Photophysical Properties in Halide Perovskite

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