1
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Weng G, Su Z, Ye S, Sun X, Cao F, Wang C, Jiang D, Hu X, Tao J, Akiyama H, Chu J, Chen S. Continuous-wave quasi-single-mode random lasing in CH 3NH 3PbBr 3 perovskite films on patterned sapphire substrates. OPTICS LETTERS 2024; 49:3713-3716. [PMID: 38950249 DOI: 10.1364/ol.525331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Accepted: 05/27/2024] [Indexed: 07/03/2024]
Abstract
We report intriguing continuous-wave quasi-single-mode random lasing in methylammonium lead bromide (CH3NH3PbBr3) perovskite films synthesized on a patterned sapphire substrate (PSS) under excitation of a 532-nm laser diode. The random laser emission evolves from a typical multi-mode to a quasi-single-mode with increasing pump fluences. The full width at half-maximum of the lasing peak is as narrow as 0.06 nm at ∼547.8 nm, corresponding to a high Q-factor of ∼9000. Such excellent random lasing performance is plausibly ascribed to the exciton resonance in optical absorption at 532 nm and the enhanced optical resonance due to the increased likelihood for randomly scattered light to re-enter the optical loops formed among the perovskite grains by multi-reflection at the perovskite/PSS interfaces. This work demonstrates the promise of single-mode perovskite random lasers by introducing the exciton resonance effect and ingeniously designed periodic nano/micro optical structure.
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2
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Chirvony VS, Suárez I, Sanchez-Diaz J, Sánchez RS, Rodríguez-Romero J, Mora-Seró I, Martínez-Pastor JP. Unusual Spectrally Reproducible and High Q-Factor Random Lasing in Polycrystalline Tin Perovskite Films. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2208293. [PMID: 36385442 DOI: 10.1002/adma.202208293] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 10/21/2022] [Indexed: 06/16/2023]
Abstract
An unusual spectrally reproducible near-IR random lasing (RL) with no fluctuation of lasing peak wavelength is disclosed in polycrystalline films of formamidinium tin triiodide perovskite, which have been chemically stabilized against Sn2+ to Sn4+ oxidation. Remarkably, a quality Q-factor as high as ≈104 with an amplified spontaneous emission (ASE) threshold as low as 2 µJ cm-2 (both at 20 K) are achieved. The observed spectral reproducibility is unprecedented for semiconductor thin film RL systems and cannot be explained by the strong spatial localization of lasing modes. Instead, it is suggested that the spectral stability is a result of such an unique property of Sn-based perovskites as a large inhomogeneous broadening of the emitting centers, which is a consequence of an intrinsic structural inhomogeneity of the material. Due to this, lasing can occur simultaneously in modes that are spatially strongly overlapped, as long as the spectral separation between the modes is larger than the homogeneous linewidth of the emitting centers. The discovered mechanism of RL spectral stability in semiconductor materials, possessing inhomogeneous broadening, opens up prospects for their practical use as cheap sources of narrow laser lines.
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Affiliation(s)
- Vladimir S Chirvony
- UMDO, Instituto de Ciencia de los Materiales, Universidad de Valencia, Valencia, 46980, Spain
| | - Isaac Suárez
- Escuela Técnica Superior de Ingeniería, Universidad de Valencia, Valencia, 46100, Spain
| | - Jesus Sanchez-Diaz
- Institute of Advanced Materials (INAM), Universitat Jaume I, Castelló de la Plana, Castelló, 12006, Spain
| | - Rafael S Sánchez
- Institute of Advanced Materials (INAM), Universitat Jaume I, Castelló de la Plana, Castelló, 12006, Spain
| | - Jesús Rodríguez-Romero
- Facultad de Química, Universidad Nacional Autónoma de México, Coyoacán, Ciudad de México, 04510, Mexico
| | - Iván Mora-Seró
- Institute of Advanced Materials (INAM), Universitat Jaume I, Castelló de la Plana, Castelló, 12006, Spain
| | - Juan P Martínez-Pastor
- UMDO, Instituto de Ciencia de los Materiales, Universidad de Valencia, Valencia, 46980, Spain
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3
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Reynoso-de la Cruz HM, Rosas-Román I, Ramos-Ortiz G, Mendoza BS, Ortiz-Ricardo E, Gutiérrez-Juárez G, Castro-Beltrán R. Studies of the transition between amplified spontaneous emission and optical lasing in ultrahigh-Q polymeric micro-pedestals. OPTICS EXPRESS 2023; 31:9018-9033. [PMID: 36860004 DOI: 10.1364/oe.482005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 01/10/2023] [Indexed: 06/18/2023]
Abstract
In this work, we demonstrate the properties of Rhodamine B-doped polymeric cylindrical microlasers to perform either as gain amplification devices through amplified spontaneous emission (ASE) or as optical lasing gain devices. A study based on different %wt concentrations of microcavity families with distinct geometrical features demonstrates the characteristic dependence on either gain amplification phenomena. Principal component analysis (PCA) discriminates the relationship between the main ASE and lasing properties and the geometrical aspects of the cavity families. ASE and optical lasing thresholds were found, respectively, as low as 0.2 μJcm-2 and 0.1 μJcm-2 passing the best-reported microlaser performances in literature for cylindrical cavities, even in comparison with those based on 2D patterns. Moreover, our microlasers showed ultrahigh Q-factor of ∼3 × 106, and for the first time, to the best of our knowledge, a visible emission comb constituted by above a hundred peaks at 40 μJcm-2 with a registered free spectral range (FSR) of 0.25 nm corroborated through the whispery gallery mode (WGM) theory.
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4
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Oh C, Ma HJ, Lee K, Kim DK, Park Y. Non-resonant lasing in a deep-hole scattering cavity. OPTICS EXPRESS 2022; 30:47816-47825. [PMID: 36558700 DOI: 10.1364/oe.475610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 11/15/2022] [Indexed: 06/17/2023]
Abstract
Random lasers are promising in the spectral regime, wherein conventional lasers are unavailable, with advantages of low fabrication costs and applicability of diverse gain materials. However, their practical application is hindered by high threshold powers, low power efficiency, and difficulties in light collection. Here, we demonstrate a power-efficient easy-to-fabricate non-resonant laser using a deep hole on a porous gain material. The laser action in this counterintuitive cavity was enabled by non-resonant feedback from strong diffuse reflections on the inner surface. Additionally, significant enhancements in slope efficiency, threshold power, and directionality were obtained from cavities fabricated on a porous Nd:YAG ceramic.
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Wang L, Yang M, Zhang S, Niu C, Lv Y. Perovskite Random Lasers, Process and Prospects. MICROMACHINES 2022; 13:2040. [PMID: 36557338 PMCID: PMC9783485 DOI: 10.3390/mi13122040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 11/11/2022] [Accepted: 11/14/2022] [Indexed: 06/17/2023]
Abstract
Random lasers (RLs) are a kind of coherent light source with optical feedback based on disorder-induced multiple scattering effects instead of a specific cavity. The unique feedback mechanism makes RLs different from conventional lasers. They have the advantages of small volume, flexible shape, omnidirectional emission, etc., and have broad application prospects in the fields of laser illumination, speckle-free imaging, display, and sensing. Colloidal metal-halide perovskite nanomaterials are a hot research field in light sources. They have been considered as desired gain media owing to their superior properties, such as high photoluminescence, tunable emission wavelengths, and easy fabrication processes. In this review, we summarize the research progress of RLs based on perovskite nanomaterials. We first present the evolution of the RLs based on the perovskite quantum dots (QDs) and perovskite films. The fabrication process of perovskite nano-/microstructures and lasers is discussed in detail. After that, the frontier applications of perovskite RLs are discussed. Finally, the challenges are discussed, and the prospects for further development are proposed.
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Affiliation(s)
- Lei Wang
- School of Instrument Science and Opto-Electronics Engineering, Beijing Information Science and Technology University, Beijing 100192, China
| | | | | | | | - Yong Lv
- School of Instrument Science and Opto-Electronics Engineering, Beijing Information Science and Technology University, Beijing 100192, China
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6
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Huang S, Liu N, Liu Z, Zhan Z, Hu Z, Du Z, Zhang Z, Luo J, Du J, Tang J, Leng Y. Enhanced Amplified Spontaneous Emission in Quasi-2D Perovskite by Facilitating Energy Transfer. ACS APPLIED MATERIALS & INTERFACES 2022; 14:33842-33849. [PMID: 35829674 DOI: 10.1021/acsami.2c07633] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Despite the superior optoelectronic properties of quasi-two-dimensional (quasi-2D) Ruddlesden-Popper halide perovskites, the inhomogeneous distribution of mixed phases result in inefficient energy transfer and multiple emission peaks. Herein, the insufficient energy funneling process at the high-energy phase is almost completely suppressed and the excitonic understanding of gain nature is studied in the energy funneling managed quasi-2D perovskite via introducing poly(vinyl pyrrolidone) (PVP) additive. The energy transfer process is facilitated from 0.37 to 0.26 ps after introducing the PVP additive, accelerating the exciton accumulation in the emissive state, and increasing the ratio of the high-dimensional phase for enhancing radiative emission. The gain lifetime is promoted to be as fast as 28 ps to outcompete nonradiative recombination during the build-up of population inversion. Simultaneously, the net gain coefficient is increased by more than twofold that of the pristine perovskite film. Owing to the remarkable gain properties, room-temperature amplified spontaneous emission is realized with a low threshold of 11.3 μJ/cm2, 4 times lower than 43 μJ/cm2 of the pristine film. Our findings suggest that the PVP-treated quasi-2D perovskite shows great promise for high-performance laser devices.
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Affiliation(s)
- Sihao Huang
- State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-Intense Laser Science, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Nian Liu
- Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Zhengzheng Liu
- State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-Intense Laser Science, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zijun Zhan
- State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-Intense Laser Science, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Zhiping Hu
- Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
| | - Zixiao Du
- Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
| | - Zeyu Zhang
- Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
| | - Jiajun Luo
- Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Juan Du
- State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-Intense Laser Science, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
- Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiang Tang
- Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Yuxin Leng
- State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-Intense Laser Science, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
- Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
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7
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Azmi AN, Wan Ismail WZ, Abu Hassan H, Halim MM, Zainal N, Muskens OL, Wan Ahmad Kamil WM. Review of Open Cavity Random Lasers as Laser-Based Sensors. ACS Sens 2022; 7:914-928. [PMID: 35377613 DOI: 10.1021/acssensors.1c02749] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
In this review, the concept of open cavity lasing for ultrasensitive sensing is explored, specifically in driving important innovations as laser-based biosensors─a field mostly dominated by fluorescence-based sensing. Laser-based sensing exhibits higher signal amplification and lower signal-to-noise ratio due to narrow emission lines as well as high sensitivity due to nonlinear components. The versatility of open cavity random lasers for probing analytes directly which is ultrasensitive to small changes in chemical composition and temperature fluctuations paves the path of utilizing narrow emission lines for advanced sensing. The concept of random lasing is first explained followed by a comparison of the different lasing threshold that has been reported. This is followed by a survey of reports on laser-based sensing and more specifically as biosensors. Finally, a perspective on the way forward for open cavity laser-based sensing is put forth.
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Affiliation(s)
| | - Wan Zakiah Wan Ismail
- Faculty of Engineering and Built Environment, Universiti Sains Islam Malaysia, 71800, Nilai, Negeri Sembilan, Malaysia
| | - Haslan Abu Hassan
- School of Physics, Universiti Sains Malaysia, 11800 Penang, Malaysia
| | - Mohd Mahadi Halim
- School of Physics, Universiti Sains Malaysia, 11800 Penang, Malaysia
| | - Norzaini Zainal
- Institute of Nano Optoelectronics Research and Technology (INOR), Universiti Sains Malaysia, 11800, Penang, Malaysia
| | - Otto L. Muskens
- Physics and Astronomy, Faculty of Physical Sciences and Engineering, University of Southampton, Highfield, Southampton SO17 1BJ, United Kingdom
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8
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Enomoto S, Tagami T, Ueda Y, Moriyama Y, Fujiwara K, Takahashi S, Yamashita K. Drastic transitions of excited state and coupling regime in all-inorganic perovskite microcavities characterized by exciton/plasmon hybrid natures. LIGHT, SCIENCE & APPLICATIONS 2022; 11:8. [PMID: 34974529 PMCID: PMC8720309 DOI: 10.1038/s41377-021-00701-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 11/28/2021] [Accepted: 12/19/2021] [Indexed: 05/09/2023]
Abstract
Lead-halide perovskites are highly promising for various optoelectronic applications, including laser devices. However, fundamental photophysics explaining the coherent-light emission from this material system is so intricate and often the subject of debate. Here, we systematically investigate photoluminescence properties of all-inorganic perovskite microcavity at room temperature and discuss the excited state and the light-matter coupling regime depending on excitation density. Angle-resolved photoluminescence clearly exhibits that the microcavity system shows a transition from weak coupling regime to strong coupling regime, revealing the increase in correlated electron-hole pairs. With pumping fluence above the threshold, the photoluminescence signal shows a lasing behavior with bosonic condensation characteristics, accompanied by long-range phase coherence. The excitation density required for the lasing behavior, however, is found to exceed the Mott density, excluding the exciton as the excited state. These results demonstrate that the polaritonic Bardeen-Cooper-Schrieffer state originates the strong coupling formation and the lasing behavior.
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Affiliation(s)
- Shuki Enomoto
- Faculty of Electrical Engineering and Electronics, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Tomoya Tagami
- Faculty of Electrical Engineering and Electronics, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Yusuke Ueda
- Faculty of Electrical Engineering and Electronics, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Yuta Moriyama
- Faculty of Electrical Engineering and Electronics, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Kentaro Fujiwara
- Faculty of Electrical Engineering and Electronics, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Shun Takahashi
- Faculty of Electrical Engineering and Electronics, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Kenichi Yamashita
- Faculty of Electrical Engineering and Electronics, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan.
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9
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Ahmad Kamal AS, Lin CC, Xing D, Lee YC, Wang Z, Chen MH, Ho YL, Chen CW, Delaunay JJ. Lithographic in-mold patterning for CsPbBr 3 nanocrystals distributed Bragg reflector single-mode laser. NANOSCALE 2021; 13:15830-15836. [PMID: 34516594 DOI: 10.1039/d1nr04543a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Extensive studies on lead halide perovskites have shown that these materials are excellent candidates as gain mediums. Recently, many efforts have been made to incorporate perovskite lasers in integrated optical circuits. Possible solutions would be to utilize standard lithography with an etching/lift-off process or a direct laser etching technique. However, due to the fragile nature of the lead halide perovskites which gives rise to significant material deterioration during the lithography and etching processes, realizing a small-size, low-roughness, and single-mode laser remains a challenge. Here, a lithographic in-mold patterning method realized by nanocrystal concentration control and a multi-step filling-drying process is proposed to demonstrate CsPbBr3 nanocrystals distributed-Bragg-reflector (DBR) waveguide lasers. This method realizes the patterning of the CsPbBr3 nanocrystal laser cavity and DBR grating without lift-off and etching processes, and the smallest fabricated structures are obtained in a few hundred nanometers. The single-mode lasing is demonstrated at room temperature with a threshold of 23.5 μJ cm-2. The smallest full width at half maximum FWHM of the laser output is 0.4 nm. Due to the fabrication process and the DBR laser geometry, the lasers can be fabricated in a compact array, which is important for incorporating perovskite-based lasers in complex optoelectronic circuits.
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Affiliation(s)
| | - Cheng-Chieh Lin
- International Graduate Program of Molecular Science and Technology (NTU-MST), Taiwan International Graduate Program, National Taiwan University and Academia Sinica, Taipei 10617, Taiwan
- Department of Materials Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
- Molecular Science and Technology Program, Taiwan International Graduate Program (TIGP), Academia Sinica, Taipei 11529, Taiwan
| | - Di Xing
- School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan.
| | - Yang-Chun Lee
- School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan.
| | - Zhiyu Wang
- School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan.
| | - Mu-Hsin Chen
- School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan.
| | - Ya-Lun Ho
- School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan.
| | - Chun-Wei Chen
- International Graduate Program of Molecular Science and Technology (NTU-MST), Taiwan International Graduate Program, National Taiwan University and Academia Sinica, Taipei 10617, Taiwan
- Department of Materials Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
- Center of Atomic Initiative for New Materials (AI-MAT), National Taiwan University, Taipei 10617, Taiwan
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10
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Kao TS, Hong YH, Hong KB, Lu TC. Perovskite random lasers: a tunable coherent light source for emerging applications. NANOTECHNOLOGY 2021; 32:282001. [PMID: 33621968 DOI: 10.1088/1361-6528/abe907] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 02/22/2021] [Indexed: 05/24/2023]
Abstract
Metal halide perovskites have attracted increasing attention due to their superior optical and electrical characteristics, flexible tunability, and easy fabrication processes. Apart from their unprecedented successes in photovoltaic devices, lasing action is the latest exploitation of the optoelectronic performance of perovskites. Among the substantial body of research on the configuration design and light emission quality of perovskite lasers, the random laser is a very interesting stimulated emission phenomenon with unique optical characteristics. In this review article, we first comprehensively overview the development of perovskite-based optoelectronic devices and then focus our discussion on random lasing performance. After an introduction to the historical development of versatile random lasers and perovskite random lasers, we summarize several synthesis methods and discuss their material configurations and stability in synthesized perovskite materials. Following this, a theoretical approach is provided to explain the random lasing mechanism in metal halide perovskites. Finally, we propose future applications of perovskite random lasers, presenting conclusions as well as future challenges, such as quality stability and toxicity reduction, of perovskite materials with regard to practical applications in this promising field.
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Affiliation(s)
- Tsung Sheng Kao
- Department of Photonics and Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, National Chiao Tung University, Hsinchu 30050, Taiwan
- Department of Photonics and Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, Hsinchu 30050, Taiwan
| | - Yu-Heng Hong
- Department of Photonics and Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, National Chiao Tung University, Hsinchu 30050, Taiwan
- Department of Photonics and Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, Hsinchu 30050, Taiwan
| | - Kuo-Bin Hong
- Department of Photonics and Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, National Chiao Tung University, Hsinchu 30050, Taiwan
- Department of Photonics and Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, Hsinchu 30050, Taiwan
| | - Tien-Chang Lu
- Department of Photonics and Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, National Chiao Tung University, Hsinchu 30050, Taiwan
- Department of Photonics and Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, Hsinchu 30050, Taiwan
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11
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Lee K, Ma HJ, Rotermund F, Kim DK, Park Y. Non-resonant power-efficient directional Nd:YAG ceramic laser using a scattering cavity. Nat Commun 2021; 12:8. [PMID: 33397891 PMCID: PMC7782720 DOI: 10.1038/s41467-020-20114-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 10/30/2020] [Indexed: 02/05/2023] Open
Abstract
Non-resonant lasers exhibit the potential for stable and consistent narrowband light sources. Furthermore, non-resonant lasers do not require well-defined optics, and thus has considerably diversified the available types of laser gain materials including powders, films, and turbid ceramics. Despite these intrinsic advantages, the practical applications of non-resonant lasers have been limited so far, mainly because of their low power efficiency and omnidirectional emission. To overcome these limitations, here we propose a light trap design for non-resonant lasers based on a spherical scattering cavity with a small entrance. Using a porous Nd3+:YAG ceramic, directional laser emission could be observed with significant enhancements in the slope efficiency and linewidth (down to 32 pm). A theoretical model is also developed to describe and predict the operation characteristics of proposed non-resonant laser.
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Affiliation(s)
- KyeoReh Lee
- Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea. .,KAIST Institute for Health Science and Technology, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea.
| | - Ho Jin Ma
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea
| | - Fabian Rotermund
- Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea
| | - Do Kyung Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea.
| | - YongKeun Park
- Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea. .,KAIST Institute for Health Science and Technology, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea.
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12
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Bouteyre P, Son Nguyen H, Lauret JS, Trippé-Allard G, Delport G, Lédée F, Diab H, Belarouci A, Seassal C, Garrot D, Bretenaker F, Deleporte E. Directing random lasing emission using cavity exciton-polaritons. OPTICS EXPRESS 2020; 28:39739-39749. [PMID: 33379517 DOI: 10.1364/oe.410249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 11/24/2020] [Indexed: 06/12/2023]
Abstract
Random lasing is an intriguing phenomenon occurring in disordered structures with optical gain in which light scattering provides the necessary feedback for lasing action. Unlike conventional lasers, random lasing systems emit in all directions due to light scattering. While this property can be desired in some cases, directional emission remains required for most applications. In a vertical microcavity containing the hybrid perovskite CH3NH3PbBr3, we report here the coupling of the emission of a random laser with a cavity polaritonic resonance, resulting in a directional random lasing, whose emission angles can be tuned by varying the cavity detuning and reach values as large as 15.8° and 22.4°.
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13
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Tong J, Shi X, Niu L, Zhang X, Chen C, Han L, Zhang S, Zhai T. Dual-color plasmonic random lasers for speckle-free imaging. NANOTECHNOLOGY 2020; 31:465204. [PMID: 32845872 DOI: 10.1088/1361-6528/abaadc] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A dual-color plasmonic random laser under single-excitation is achieved in an ultrathin membrane doped with binary quantum dots and gold nanorods. The gold nanorods tune the luminescence lifetime and emission efficiency of quantum dots. Under single excitation, low-threshold random lasing is observed. Green random lasing at 547 nm is 'turned on' and red random lasing at 630 nm is greatly enhanced by the transversal and longitudinal surface plasmon resonance of the gold nanorods, respectively. Speckle-free color imaging is achieved by using the proposed dual-color random laser source. These properties would facilitate the development of random lasers in fields of illumination and imaging.
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Affiliation(s)
- Junhua Tong
- Institute of Information Photonics Technology and College of Applied Sciences, Beijing University of Technology, Beijing 100124, People's Republic of China
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14
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Wu ZY, Jian BL, Wu CS, Hsu HC. Random lasing in cesium lead iodide (CsPbI 3) thin films with no surface passivation. OPTICS EXPRESS 2020; 28:21805-21813. [PMID: 32752452 DOI: 10.1364/oe.395821] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 06/30/2020] [Indexed: 06/11/2023]
Abstract
We report the CsPbI3 random lasing at room temperature fabricated by a chemical deposition method. The CsPbI3 thin films with high crystalline quality have intense PL emission and easily achieve the lasing behavior with the Q-factor value over 7000. The lasing behavior of CsPbI3 thin films can be classified as random lasing by measuring lasing spectra at different collective angles. The fast Fourier transform analysis of the lasing spectra is employed to determine the effective cavity length. Most important of all, the lasing stability investigation shows the prolonged lasing stability over 4.8 X 105 laser shots in air.
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15
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Mallick SP, Hong YH, Chen LR, Kao TS, Lu TC. Effect of Passivation Layer on the Thin Film Perovskite Random Lasers. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E2322. [PMID: 32443648 PMCID: PMC7288200 DOI: 10.3390/ma13102322] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 05/08/2020] [Accepted: 05/14/2020] [Indexed: 11/17/2022]
Abstract
Novel functionalities of disorder-induced scattering effect in random lasers, attributed to low spatial coherence, draw remarkable attention in high-contrast to superior quality speckle-free imaging applications. This paper demonstrates perovskite-polystyrene (PS)-based random lasing action with robust optical performance at room temperature. Optical characterizations are carried out upon perovskite thin films addition with polystyrene of different mixing concentrations (wt.%). A low threshold lasing operation is achieved with an increasing concentration of polystyrene, accompanying a wavy surface texture with high surface roughness. The rough surface dominating multiple scattering effects leads to enhanced feedback efficiency. Moreover, this study also elucidates efficient fabrication process steps for the development of high quality and durable PS-based random lasers. With the advantages of reduced coherent artifacts and low spatial coherence, speckle free projection images of the USAF (U. S. Air Force MIL-STD-150A standard of 1951) resolution test chart are shown for different PS-based random lasers.
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Affiliation(s)
| | | | | | | | - Tien-Chang Lu
- Department of Photonics, College of Electrical and Computer Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan; (S.P.M); (Y.-H.H.); (L.-R.C.); (T.S.K.)
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16
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Dong H, Zhang C, Liu X, Yao J, Zhao YS. Materials chemistry and engineering in metal halide perovskite lasers. Chem Soc Rev 2020; 49:951-982. [PMID: 31960011 DOI: 10.1039/c9cs00598f] [Citation(s) in RCA: 127] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The invention and development of the laser have revolutionized science, technology, and industry. Metal halide perovskites are an emerging class of semiconductors holding promising potential in further advancing the laser technology. In this Review, we provide a comprehensive overview of metal halide perovskite lasers from the viewpoint of materials chemistry and engineering. After an introduction to the materials chemistry and physics of metal halide perovskites, we present diverse optical cavities for perovskite lasers. We then comprehensively discuss various perovskite lasers with particular functionalities, including tunable lasers, multicolor lasers, continuous-wave lasers, single-mode lasers, subwavelength lasers, random lasers, polariton lasers, and laser arrays. Following this a description of the strategies for improving the stability and reducing the toxicity of metal halide perovskite lasers is provided. Finally, future research directions and challenges toward practical technology applications of perovskite lasers are provided to give an outlook on this emerging field.
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Affiliation(s)
- Haiyun Dong
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
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17
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Amplified Spontaneous Emission and Lasing in Lead Halide Perovskites: State of the Art and Perspectives. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9214591] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Lead halide perovskites are currently receiving increasing attention due to their potential to combine easy active layers fabrication, tunable electronic and optical properties with promising performance of optoelectronic and photonic device prototypes. In this paper, we review the main development steps and the current state of the art of the research on lead halide perovskites amplified spontaneous emission and on optically pumped lasers exploiting them as active materials.
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18
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Liu Y, Yang W, Xiao S, Zhang N, Fan Y, Qu G, Song Q. Surface-Emitting Perovskite Random Lasers for Speckle-Free Imaging. ACS NANO 2019; 13:10653-10661. [PMID: 31430124 DOI: 10.1021/acsnano.9b04925] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Random lasers have been ideal illumination sources for speckle-free and high-speed imaging. Despite their successes, the real applications of random lasers are facing a long-standing challenge, i.e., the cumbersome size of the illuminating system. Herein, we demonstrate perovskite-based surface emitting random lasers (SERLs) and explore their applications in speckle-free imaging. The random lasers are generated by multiple scattering in a perovskite polycrystalline film sandwiched by two distributed Bragg reflectors. Owing to the tight confinement in vertical direction and large number of random resonances, the wavevectors of random lasers are dominated by their vertical components, and thus, multimode SERLs with a divergence angle of ∼3-5° and low spatial coherence are produced. By directly illuminating the patterns with the SERLs, the notable speckle noises of conventional optical images have been dramatically suppressed. This research shall provide a strategy toward the integrated spectral-free imaging systems.
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Affiliation(s)
- Yilin Liu
- State Key Laboratory on Tunable laser Technology, Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Shenzhen Graduate School , Harbin Institute of Technology , Shenzhen , 518055 , China
| | - Wenhong Yang
- State Key Laboratory on Tunable laser Technology, Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Shenzhen Graduate School , Harbin Institute of Technology , Shenzhen , 518055 , China
| | - Shumin Xiao
- State Key Laboratory on Tunable laser Technology, Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Shenzhen Graduate School , Harbin Institute of Technology , Shenzhen , 518055 , China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan 030006 China
| | - Nan Zhang
- State Key Laboratory on Tunable laser Technology, Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Shenzhen Graduate School , Harbin Institute of Technology , Shenzhen , 518055 , China
| | - Yubin Fan
- State Key Laboratory on Tunable laser Technology, Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Shenzhen Graduate School , Harbin Institute of Technology , Shenzhen , 518055 , China
| | - Geyang Qu
- State Key Laboratory on Tunable laser Technology, Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Shenzhen Graduate School , Harbin Institute of Technology , Shenzhen , 518055 , China
| | - Qinghai Song
- State Key Laboratory on Tunable laser Technology, Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Shenzhen Graduate School , Harbin Institute of Technology , Shenzhen , 518055 , China
- Collaborative Innovation Center of Extreme Optics , Shanxi University , Taiyuan 030006 China
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19
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Abstract
The spatial formation of coherent random laser modes in strongly scattering disordered random media is a central feature in the understanding of the physics of random lasers. We derive a quantum field theoretical method for random lasing in disordered samples of complex amplifying Mie resonators which is able to provide self-consistently and free of any fit parameter the full set of transport characteristics at and above the laser phase transition. The coherence length and the correlation volume respectively is derived as an experimentally measurable scale of the phase transition at the laser threshold. We find that the process of stimulated emission in extended disordered arrangements of active Mie resonators is ultimately connected to time-reversal symmetric multiple scattering in the sense of photonic transport while the diffusion coefficient is finite. A power law is found for the random laser mode diameters in stationary state with increasing pump intensity.
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20
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Weng G, Tian J, Chen S, Xue J, Yan J, Hu X, Chen S, Zhu Z, Chu J. Giant reduction of the random lasing threshold in CH 3NH 3PbBr 3 perovskite thin films by using a patterned sapphire substrate. NANOSCALE 2019; 11:10636-10645. [PMID: 31065661 DOI: 10.1039/c9nr00863b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Hybrid organic-inorganic metal halide perovskites are currently arousing enthusiasm and stimulating huge activity across several fields of optoelectronics due to their outstanding properties. In this study, we present the incoherent random lasing (RL) emissions from CH3NH3PbBr3 perovskite thin films on both planar fluorine-doped tin oxide (FTO) substrates and patterned sapphire substrates (PSSs). A detailed examination of the spectral evolution indicates that inelastic exciton-exciton scattering called P-emission is the most plausible mechanism accounting for the lasing emissions. The RL threshold of the perovskite films on PSSs is found to be effectively reduced by more than one order of magnitude from 2.55 to 0.15 μJ per pulse compared to that on FTO substrates. The giant threshold reduction is ascribed to the enhanced random scattering of light and the photon recycling induced by the multireflection processes at the perovskite/PSS interface, which increases the likelihood that the inoperative random rays will re-enter the possible optical loops formed among the perovskite particles, resulting in considerable optical resonance enhancement. The simulation results reveal that the light extraction efficiency on the top facet of the perovskites is significantly increased by approximately 155% by utilizing the PSS instead of the FTO substrate. Moreover, the first direct experimental observation of the multireflection phenomenon of light, as well as the dynamic processes of photon propagation in the composite PSS structure, is presented by Kerr-gate-based time-resolved photoluminescence. Our results provide an effective strategy to achieve high-performance perovskite random lasers and novel light-emitting devices for speckle-free full-field imaging and solid-state lighting applications, by introducing ingeniously designed periodic nano-/microscale optical structures.
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Affiliation(s)
- Guoen Weng
- Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Electronic Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China.
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21
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Wang YC, Li H, Hong YH, Hong KB, Chen FC, Hsu CH, Lee RK, Conti C, Kao TS, Lu TC. Flexible Organometal-Halide Perovskite Lasers for Speckle Reduction in Imaging Projection. ACS NANO 2019; 13:5421-5429. [PMID: 31009199 DOI: 10.1021/acsnano.9b00154] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Disorder is emerging as a strategy for fabricating random laser sources with very promising materials, such as perovskites, for which standard laser cavities are not effective or too expensive. We need, however, different fabrication protocols and technologies for reducing the laser threshold and controlling its emission. Here, we demonstrate an effectively solvent-engineered method for high-quality perovskite thin films on a flexible polyimide substrate. The fractal perovskite thin films exhibit excellent optical properties at room temperature and easily achieve lasing action without any laser cavity above room temperature with a low pumping threshold. The lasing action is also observed in curved perovskite thin films on flexible substrates. The lasing threshold can be further reduced by increasing the local curvature, which modifies the scattering strengths of the bent thin film. We also show that the curved perovskite lasers are extremely robust with respect to repeated deformations. Because of the low spatial coherence, these curved random laser devices are efficient and durable speckle-free light sources for applications in spectroscopy, bioimaging, and illumination.
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Affiliation(s)
- Yu-Chi Wang
- Department of Photonics and Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering , National Chiao Tung University , Hsinchu 30050 , Taiwan
| | - Heng Li
- Department of Photonics and Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering , National Chiao Tung University , Hsinchu 30050 , Taiwan
| | - Yu-Heng Hong
- Department of Photonics and Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering , National Chiao Tung University , Hsinchu 30050 , Taiwan
| | - Kuo-Bin Hong
- Department of Photonics and Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering , National Chiao Tung University , Hsinchu 30050 , Taiwan
| | - Fang-Chung Chen
- Department of Photonics and Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering , National Chiao Tung University , Hsinchu 30050 , Taiwan
| | - Chia-Hung Hsu
- Department of Photonics and Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering , National Chiao Tung University , Hsinchu 30050 , Taiwan
- Division of Scientific Research , National Synchrotron Radiation Research Center , Hsinchu 30076 , Taiwan
| | - Ray-Kuang Lee
- Institute of Photonics Technologies , National Tsing Hua University , Hsinchu 30013 , Taiwan
- Physics Division , National Center for Theoretical Sciences , Hsinchu 30013 , Taiwan
| | - Claudio Conti
- Department of Physics , University Sapienza of Rome , Piazzale Aldo Moro 5 , Rome 00185 , Italy
| | - Tsung Sheng Kao
- Department of Photonics and Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering , National Chiao Tung University , Hsinchu 30050 , Taiwan
| | - Tien-Chang Lu
- Department of Photonics and Institute of Electro-Optical Engineering, College of Electrical and Computer Engineering , National Chiao Tung University , Hsinchu 30050 , Taiwan
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22
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Inorganic and Hybrid Perovskite Based Laser Devices: A Review. MATERIALS 2019; 12:ma12060859. [PMID: 30875786 PMCID: PMC6470628 DOI: 10.3390/ma12060859] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 03/04/2019] [Accepted: 03/08/2019] [Indexed: 11/17/2022]
Abstract
Inorganic and organic-inorganic (hybrid) perovskite semiconductor materials have attracted worldwide scientific attention and research effort as the new wonder semiconductor material in optoelectronics. Their excellent physical and electronic properties have been exploited to boost the solar cells efficiency beyond 23% and captivate their potential as competitors to the dominant silicon solar cells technology. However, the fundamental principles in Physics, dictate that an excellent direct band gap material for photovoltaic applications must be also an excellent light emitter candidate. This has been realized for the case of perovskite-based light emitting diodes (LEDs) but much less for the case of the respective laser devices. Here, the strides, exclusively in lasing, made since 2014 are presented for the first time. The solution processability, low temperature crystallization, formation of nearly defect free, nanostructures, the long range ambipolar transport, the direct energy band gap, the high spectral emission tunability over the entire visible spectrum and the almost 100% external luminescence efficiency show perovskite semiconductors’ potential to transform the nanophotonics sector. The operational principles, the various adopted material and laser configurations along the future challenges are reviewed and presented in this paper.
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23
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Consoli A, Soria E, Caselli N, López C. Random lasing emission tailored by femtosecond and picosecond pulsed polymer ablation. OPTICS LETTERS 2019; 44:518-521. [PMID: 30702668 DOI: 10.1364/ol.44.000518] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Accepted: 12/18/2018] [Indexed: 06/09/2023]
Abstract
We report the realization of random lasers with spatially localized feedback in which the average number of lasing modes is tuned via the fabrication process. The scattering elements required for optical feedback are obtained by short-pulsed laser ablation. By varying the pulse parameters, we control the scattering properties of the induced defects and, thus, the emission spectra. We demonstrate a large variety of spectral signatures typical of resonant random lasing with sub-nanometer linewidths, low thresholds (about 40 pJ/μm2), and single-to-multimode emission. Our simple approach allows us to obtain optical resonators with sharp linewidths at frequencies covering the entire gain window for multiple applications.
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24
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Li Z, Moon J, Gharajeh A, Haroldson R, Hawkins R, Hu W, Zakhidov A, Gu Q. Room-Temperature Continuous-Wave Operation of Organometal Halide Perovskite Lasers. ACS NANO 2018; 12:10968-10976. [PMID: 30383358 DOI: 10.1021/acsnano.8b04854] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Solution-processed organic-inorganic lead halide perovskites have recently emerged as promising gain media for tunable semiconductor lasers. However, optically pumped continuous-wave lasing at room temperature, a prerequisite for a laser diode, has not been realized so far. Here, we report lasing action in a surface-emitting distributed feedback methylammonium lead iodide (MAPbI3) perovskite laser on a silicon substrate at room temperature under continuous-wave optical pumping. This outstanding performance is achieved because of the ultralow lasing threshold of 13 W/cm2, which is enabled by thermal nanoimprint lithography that directly patterns perovskite into a high- Q cavity with large mode confinement, while at the same time, it improves perovskite's emission characteristics. Our results represent a major step toward electrically pumped lasing in organic and thin-film materials as well as the insertion of perovskite lasers into photonic integrated circuits for applications in optical computing, sensing, and on-chip quantum information.
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Affiliation(s)
| | | | | | | | | | - Walter Hu
- ASIC and System State Key Lab, Institute of Microelectronics , Fudan University , Shanghai 200433 , China
| | - Anvar Zakhidov
- Department of Nanophotonics and Metamaterials , ITMO University , Saint Petersburg 197101 , Russia
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25
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White TP, Deleporte E, Sum TC. Feature issue introduction: halide perovskites for optoelectronics. OPTICS EXPRESS 2018; 26:A153-A156. [PMID: 29401905 DOI: 10.1364/oe.26.00a153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Indexed: 06/07/2023]
Abstract
This joint Optics Express and Optical Materials Express feature issue presents a collection of nine papers on the topic of halide perovskites for optoelectronics. Perovskite materials have attracted significant attention over the past four years, initially for their outstanding performance in thin film solar cells, but more recently for applications in light-emitting devices (LEDs and lasers), photodetectors and nonlinear optics. At the same time, there is still much more to learn about the fundamental properties of these materials, and how these depend on composition, processing, and exposure to the environment. This feature issue provides a snapshot of some of the latest research in this rapidly-evolving multidisciplinary field.
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26
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Xu L, Meng Y, Xu C, Chen P. Room temperature two-photon-pumped random lasers in FAPbBr3/polyethylene oxide (PEO) composite perovskite thin film. RSC Adv 2018; 8:36910-36914. [PMID: 35558947 PMCID: PMC9088892 DOI: 10.1039/c8ra07452f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 10/22/2018] [Indexed: 12/18/2022] Open
Abstract
Solution-processed organic–inorganic halide lead perovskites have attracted increasing attention due to their great potential in low-cost, effective, and versatile light emission applications and large-scale portable optoelectronic devices. In this paper, formamidinium lead tribromide perovskite thin films composited with polyethylene oxide (PEO) were fabricated by a solution processing method. Great enhancement of photoluminescence was observed and more attractively, two-photon-pumped random lasing action could be achieved at room temperature when pumped by a nanosecond pulse laser with excitation wavelength centered at 1064 nm. Evident transition from spontaneous upconversion emission to random lasing action was investigated by monitoring the log–log light emission slope and peak width at half height. The lasing threshold is at around 1.1 mJ cm−2, which is comparable to that of other two-photon upconversion random lasers. The efficient random lasing emission originates from the multiple random scattering provided by the micrometer-scale rugged morphology and polycrystalline grain boundaries. Compared with conventional lasers that normally serve as a coherent light source, the perovskite random lasers show promise in fabricating low-cost thin-film lasing devices for flexible and speckle-free imaging applications. Solution-processed organic–inorganic halide lead perovskites have attracted increasing attention due to their great potential in low-cost, effective, and versatile light emission applications and large-scale portable optoelectronic devices.![]()
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Affiliation(s)
- Long Xu
- School of Physical Science and Technology
- Southwest University
- Chongqing
- China
| | - Yan Meng
- School of Physical Science and Technology
- Southwest University
- Chongqing
- China
| | - Caixia Xu
- School of Primary Education
- Chongqing Normal University
- Chongqing
- China
| | - Ping Chen
- School of Physical Science and Technology
- Southwest University
- Chongqing
- China
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