Femtosecond laser direct writing of perovskite patterns with whispering gallery mode lasing

Tian, Xiaoyu; Xu, Yalun; Zhao, Hongming; Qin, X. B.; Nie, Yangtian; Li, Wei; Liu, Sheng; Lin, Qianqian; Cao, Qiang

doi:10.1039/d0tc01839b

Cited by 24 publications

(23 citation statements)

References 42 publications

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“…Therefore, the trapping states are mainly located on the surface and uniformly distributed in the film, that is why we get the different behaviors in terms of the edge length-dependent threshold. In a previous work, we have studied the relationship between the diameter of the perovskite microdisk and the laser threshold and got a consistent result . This means that the conclusion is reliable.…”

Section: Resultssupporting

confidence: 54%

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Whispering Gallery Mode Lasing from Perovskite Polygonal Microcavities via Femtosecond Laser Direct Writing

Tian

Wang

et al. 2021

ACS Appl. Mater. Interfaces

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Organic–inorganic halide perovskites have excellent intrinsic properties, such as long carrier lifetime, high photoluminescence quantum yield, and high gain, in whispering gallery mode (WGM) cavities by facile vapor self-assembly or solution process, which make them competitive for high-performance microlasers. However, the performance of perovskite-based microlasers is severely limited by the fabrication of microcavities, which results in poor reproducibility and uncontrolled morphology. Herein, we explore a reproducible method which combined thermal co-evaporation with femtosecond (fs) laser direct writing for formamidinium lead iodide (FAPbI3) perovskite polygon-shaped WGM microcavities. The microlasers pumped with the fs laser had a low threshold of 4.0–12.3 μJ/cm2 and narrow full width at half-maximum of 0.62–1.05 nm. Moreover, size- and shape-dependent WGM lasing performances are also investigated systematically. The results prove that FAPbI3 polygonal microcavities can serve as promising WGM lasers and have great potential for practical optoelectronic applications.

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Section: Resultssupporting

confidence: 54%

“…In a previous work, we have studied the relationship between the diameter of the perovskite microdisk and the laser threshold and got a consistent result. 37 This means that the conclusion is reliable.…”

Section: ■ Results and Discussionmentioning

confidence: 81%

Whispering Gallery Mode Lasing from Perovskite Polygonal Microcavities via Femtosecond Laser Direct Writing

Tian

Wang

et al. 2021

ACS Appl. Mater. Interfaces

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“…The difference in the static emission spectra of perovskite microplates with various sizes can be verified by their dynamic process, which has rarely been reported in morphologydependent works. 7,24,31,32 Microplates with big areas show a larger transient mode shift due to the EHP density-induced dielectric change. 14,22 The WGM resonate condition for amplification requires qλ = 2√2nL, where q, L, and n refer to the mode number, edge length of a square resonator, and refractive index, respectively.…”

Section: ■ Discussionmentioning

confidence: 99%

“…A theoretical analysis based on a Drude-like model quantitatively interpreted the transient dielectric change and band gap renormalization in a CsPbBr 3 microplate. 22 Compared with the all-inorganic CsPbBr 3 , organic−inorganic hybrid perovskites possess the superiority of solvent processible, large-scale, and high-quality single-crystal films, which can be accessible in various micro−nano processing methods for versatile microlasers, such as by electron beam lithology, 5 nanoimprint lithography, 23 laser direct writing, 24 and focused ion beam. 11 A comprehensive understanding on the sizedependent transient behaviors in hybrid perovskites can be achieved with this platform.…”

Section: ■ Introductionmentioning

confidence: 99%

Transient Lasing Behaviors in MAPbBr₃ Perovskite Microcavities

Liu

et al. 2022

J. Phys. Chem. C

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With tunable wavelength and low lasing threshold, organo-lead perovskites have become promising candidates as lasing sources, such as microlasers for optical integration. It is essential to understand their lasing mechanism and control the lasing behavior at an ultrafast time scale. In this work, we prepared a series of square MAPbBr 3 single-crystalline microcavities with/without Bragg reflectors. The transient lasing mode behavior was found to be size-dependent, i.e., a stronger red shift and a slower decay occurred in larger microplates. This inevitable transient red shift reduces the mode quality of perovskite microlasers, which can be attributed to the electron−hole plasma decay at a high excitation density. For optimization, distributed Bragg reflectors (DBRs) were applied with successful suppression of the transient mode shift. This work provides systematic insight to understand the transient behaviors of perovskite lasing microcavities, which would guide the design of perovskite-based light sources for optical communication and integration.

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“…They found that the ns laser, which has little influence on the undesirable thermal effects compared to the ps laser, has slightly higher solar cell parameters [e.g., the open circuit voltage ( V oc ), fill factor, and PCE (η)], because of the smaller pulse width of the laser. [ 135,149 ] Laser etching is a cost‐efficient and easy way to pattern perovskites. Liguo et al.…”

Section: Direct Patterningmentioning

confidence: 99%

Recent Patterning Methods for Halide Perovskite Nanoparticles

Han

Hwang

Seol

et al. 2022

Advanced Optical Materials

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considered to resolve this, and various methods have been attempted, ranging from printing patterns with stamps to the use of lasers and inkjets. [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33] These methods are presented in Figure 1.In this article, we describe the perovskite patterning method, in two sections. In the first section, we briefly introduce the traditional perovskite patterning method employing PRs. In the second section, we introduce a perovskite patterning method that uses a template [and not a PR]: the so-called template-assisted non-PR lithography patterning method. In the third section, we present the current state-of-the-art methods: direct patterning (e.g., laser printing) and inkjet printing. Finally, we suggest a route toward direct optical perovskite patterning research.

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Femtosecond laser direct writing of perovskite patterns with whispering gallery mode lasing

Abstract: Whispering gallery mode microlasers based on evaporated perovskite films were fabricated by femtosecond laser direct writing with ultra-low threshold.

Cited by 24 publications

References 42 publications

Whispering Gallery Mode Lasing from Perovskite Polygonal Microcavities via Femtosecond Laser Direct Writing

Whispering Gallery Mode Lasing from Perovskite Polygonal Microcavities via Femtosecond Laser Direct Writing

Transient Lasing Behaviors in MAPbBr₃ Perovskite Microcavities

Recent Patterning Methods for Halide Perovskite Nanoparticles

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Femtosecond laser direct writing of perovskite patterns with whispering gallery mode lasing

Abstract: Whispering gallery mode microlasers based on evaporated perovskite films were fabricated by femtosecond laser direct writing with ultra-low threshold.

Cited by 24 publications

References 42 publications

Whispering Gallery Mode Lasing from Perovskite Polygonal Microcavities via Femtosecond Laser Direct Writing

Whispering Gallery Mode Lasing from Perovskite Polygonal Microcavities via Femtosecond Laser Direct Writing

Transient Lasing Behaviors in MAPbBr3 Perovskite Microcavities

Recent Patterning Methods for Halide Perovskite Nanoparticles

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Transient Lasing Behaviors in MAPbBr₃ Perovskite Microcavities