1
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Kumar B, Homri R, Sebbah P. 2D tunable all-solid-state random laser in the visible. Sci Rep 2023; 13:8337. [PMID: 37221207 PMCID: PMC10205816 DOI: 10.1038/s41598-023-35388-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 05/17/2023] [Indexed: 05/25/2023] Open
Abstract
A two-dimensional (2D) solid-state random laser emitting in the visible is demonstrated, in which optical feedback is provided by a controlled disordered arrangement of air-holes in a dye-doped polymer film. We find an optimal scatterer density for which threshold is minimum and scattering is the strongest. We show that the laser emission can be red-shifted by either decreasing scatterer density or increasing pump area. We show that spatial coherence is easily controlled by varying pump area. Such a 2D random laser provides with a compact on-chip tunable laser source and a unique platform to explore non-Hermitian photonics in the visible.
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Affiliation(s)
- Bhupesh Kumar
- Department of Physics, The Jack and Pearl Resnick Institute for Advanced Technology, Bar-Ilan University, 5290002, Ramat Gan, Israel
| | - Ran Homri
- Department of Physics, The Jack and Pearl Resnick Institute for Advanced Technology, Bar-Ilan University, 5290002, Ramat Gan, Israel
| | - Patrick Sebbah
- Department of Physics, The Jack and Pearl Resnick Institute for Advanced Technology, Bar-Ilan University, 5290002, Ramat Gan, Israel.
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2
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Zhu Z, Shi C, Liu Y, Zhang D, Wang Q, Du Q, Dong X, Li S, Wang W. Enhanced performance of organic light-emitting diodes by integrating quasi-periodic micro-nano structures. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 292:122401. [PMID: 36716603 DOI: 10.1016/j.saa.2023.122401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 01/16/2023] [Accepted: 01/19/2023] [Indexed: 06/18/2023]
Abstract
To integrate a quasi-periodic micro-nano structure (PMS) to the organic light-emitting devices (OLEDs) is an efficient way to enhance the performance of OLEDs. In this paper, the PMS prepared by the phase separation of Polystyrene and Poly (methyl methacrylate) was integrated to the OLEDs with the structures of Glass/PMS/Ag (30 nm)/MoO3 (5 nm)/(NPB) (40 nm)/(Alq3) (60 nm)/LiF (0.5 nm)/Al (150 nm). The maximum luminance intensity and external quantum efficiency increased to 10700 cd/m2 and 1.11 %, which is 48 % and 44 % higher than that of 7209 cd/m2 and 0.77 % of the planar reference device. The enhanced performance of OLEDs was ascribed to the attenuation of surface plasmon polariton loss caused by the PMS, which was testified by the Finite-Difference Time-Domain (FDTD) simulation. The PMS was also transferred to the hole transfer layer (PEDOT: PSS) of OLEDs by nano-imprinting lithography with the structure of Glass/(ITO) (100 nm)/PEDOT: PSS (100 nm) (with PMS)/NPB (10 nm)/Alq3 (50 nm)/LiF (0.5 nm)/Al (100 nm). The performance was also improved by the optimized PMS and the light out-coupling efficiency increased to about 49.5 %, which is much higher than that of 28.8 % in the OLEDs with PMS Ag anode and 20 % in the planar reference devices. This suggests that the PMS can improve the OLED device performance regardless of the functional layer in which the PMS is integrated.
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Affiliation(s)
- Zhongchang Zhu
- School of Physical Science and Information Technology, Liaocheng University, Shandong 252059, China; Shandong Provincial Key Laboratory of Optical Communication Science and Technology, Shandong 252059, China
| | - Chaojun Shi
- School of Physical Science and Information Technology, Liaocheng University, Shandong 252059, China; Shandong Provincial Key Laboratory of Optical Communication Science and Technology, Shandong 252059, China
| | - Yunlong Liu
- School of Physical Science and Information Technology, Liaocheng University, Shandong 252059, China; Shandong Provincial Key Laboratory of Optical Communication Science and Technology, Shandong 252059, China
| | - Dong Zhang
- School of Physical Science and Information Technology, Liaocheng University, Shandong 252059, China; Shandong Provincial Key Laboratory of Optical Communication Science and Technology, Shandong 252059, China
| | - Qingru Wang
- School of Physical Science and Information Technology, Liaocheng University, Shandong 252059, China; Shandong Provincial Key Laboratory of Optical Communication Science and Technology, Shandong 252059, China
| | - Qianqian Du
- School of Physical Science and Information Technology, Liaocheng University, Shandong 252059, China; Shandong Provincial Key Laboratory of Optical Communication Science and Technology, Shandong 252059, China
| | - Xiaochen Dong
- School of Physical Science and Information Technology, Liaocheng University, Shandong 252059, China; Shandong Provincial Key Laboratory of Optical Communication Science and Technology, Shandong 252059, China; Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), School of Physical and Mathematical Sciences, Nanjing Tech University (NanjingTech), Nanjing 211800, China
| | - Shuhong Li
- School of Physical Science and Information Technology, Liaocheng University, Shandong 252059, China; Shandong Provincial Key Laboratory of Optical Communication Science and Technology, Shandong 252059, China.
| | - Wenjun Wang
- School of Physical Science and Information Technology, Liaocheng University, Shandong 252059, China; Shandong Provincial Key Laboratory of Optical Communication Science and Technology, Shandong 252059, China.
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3
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Cyprych K, Sznitko L. Tailoring the Random Lasing Properties by Controlled Phase Separation Process in PMMA:PVK Dye-Doped Polymeric Blends. Polymers (Basel) 2021; 13:3182. [PMID: 34578083 PMCID: PMC8467720 DOI: 10.3390/polym13183182] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 09/15/2021] [Accepted: 09/16/2021] [Indexed: 11/17/2022] Open
Abstract
This article describes the random lasing (RL) phenomenon obtained in a dye-doped, polymeric double-phase system composed of PMMA and PVK polymers. It shows how relative concentrations between mentioned macromolecules can influence lasing parameters of the resulting blends, including obtained emission spectra and threshold conditions. We describe the influence of lasers' composition on their morphologies and link them with particular RL properties. Our studies reveal that the disorder caused by phase separation can support the RL phenomenon both in the waveguiding and quasi-waveguiding regimes. Changing the relative concentration of polymers enables one to switch between both regimes, which significantly influences threshold conditions, spectral shift, number of lasing modes, and ability to support extended and/or localized modes. Finally, we show that a simple phase separation technique can be used to fabricate efficient materials for RL. Moreover, it enables the tailoring of lasing properties of materials in a relatively wide range at the stage of the laser material fabrication process in a simple way. Therefore, this technique can be seen as a fast, cheap, and easy to perform way of random lasers fabrication.
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Affiliation(s)
| | - Lech Sznitko
- Advanced Materials Engineering and Modeling Group, Wroclaw University of Science and Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland;
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4
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Gummaluri VS, Gayathri R, Vijayan C, Matham MV. Bio-inspired wrinkle microstructures for random lasing governed by surface roughness. OPTICS LETTERS 2021; 46:1033-1036. [PMID: 33649650 DOI: 10.1364/ol.417148] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 01/26/2021] [Indexed: 06/12/2023]
Abstract
A method for fabricating bio-inspired scattering substrates based on polydimethylsiloxane (PDMS) for spatially incoherent random lasing is presented. The leaves of monstera and piper sarmentosum plants are used to mold PDMS polymer to form wrinkle-like scattering substrates, which are then used with a liquid gain medium for random lasing. Scattering is attributed to the surface roughness (Sa) of the samples. The rougher sample with 5.2 µm Sa shows a two-mode stable lasing with a 2 nm linewidth and a lower threshold fluence of 0.2mJ/cm2 compared to the sample with smaller Sa (3.6 µm) with a linewidth of 5 nm and a threshold fluence of 0.5mJ/cm2. The waveguide theory substantiates the results of incoherent random lasing through a relation between the microstructure feature size and the mean free path. Power Fourier transform analysis is used to deduce the resonant cavity length of 180 µm in the rougher sample, and the observed variations in cavity length with Sa validate the optical feedback. PDMS being hydrophobic, the scattering substrate can be reused by wiping off the gain medium. This Letter paves the way for facile fabrication methods of bio-inspired random lasers for sensing and imaging applications.
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5
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Jiang Y, Liu YY, Liu X, Lin H, Gao K, Lai WY, Huang W. Organic solid-state lasers: a materials view and future development. Chem Soc Rev 2020; 49:5885-5944. [PMID: 32672260 DOI: 10.1039/d0cs00037j] [Citation(s) in RCA: 106] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Lasing applications have spread over various aspects of human life. To meet the developing trends of the laser industry towards being miniature, portable, and highly integrated, new laser technologies are in urgent demand. Organic semiconductors are promising gain medium candidates for novel laser devices, due to their convenient processing techniques, ease of spectral and chemical tuning, low refractive indexes, mechanical flexibilities, and low thresholds, etc. organic solid-state lasers (OSSLs) open up a new horizon of simple, low-cost, time-saving, versatile and environmental-friendly manufacturing technologies for new and desirable laser structures (micro-, asymmetric, flexible, etc.) to unleash the full potential of semiconductor lasers for future electronics. Besides the development of optical feedback structures, the design and synthesis of robust organic gain media is critical as a vigorous aspect of OSSLs. Herein, we provide a comprehensive review of recent advances in organic gain materials, mainly focused on organic semiconductors for OSSLs. The significant breakthroughs toward electrical pumping of OSSLs are emphasized. Opportunities, challenges and future research directions for the design of organic gain media are also discussed.
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Affiliation(s)
- Yi Jiang
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Yuan-Yuan Liu
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Xu Liu
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - He Lin
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Kun Gao
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Wen-Yong Lai
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China. and Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China
| | - Wei Huang
- Key Laboratory for Organic Electronics and Information Displays (KLOEID), Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China. and Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China
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6
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Hoinka NM, Ostwald C, Fuhrmann-Lieker T. Two-dimensional Wrinkle Resonators for Random Lasing in Organic Glasses. Sci Rep 2020; 10:2434. [PMID: 32051460 PMCID: PMC7015940 DOI: 10.1038/s41598-020-59236-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 12/30/2019] [Indexed: 11/09/2022] Open
Abstract
Random lasers consisting of slab waveguides with two-dimensional disordered wrinkling patterns that act as scattering resonators are reported. As active material 2,2',7,7'-tetraphenyl-9,9'-spirobifluorene is used which is sandwiched between an oxidized silicon wafer and a cladding with higher glass transition temperature. Wrinkles with tailorable periodicity have been induced by thermal annealing. Photopumping experiments show the transition from amplified spontaneous emission to a multiple peak laser spectrum with linewidths as low as 0.1 nm, demonstrating the applicability of this approach for random laser design.
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Affiliation(s)
- Nicolai M Hoinka
- Macromolecular Chemistry and Molecular Materials, Institute of Chemistry and Center for Interdisciplinary Nanostructure Science and Technology, University of Kassel, Heinrich-Plett Str. 40, 34132, Kassel, Germany
| | - Christoph Ostwald
- Macromolecular Chemistry and Molecular Materials, Institute of Chemistry and Center for Interdisciplinary Nanostructure Science and Technology, University of Kassel, Heinrich-Plett Str. 40, 34132, Kassel, Germany
| | - Thomas Fuhrmann-Lieker
- Macromolecular Chemistry and Molecular Materials, Institute of Chemistry and Center for Interdisciplinary Nanostructure Science and Technology, University of Kassel, Heinrich-Plett Str. 40, 34132, Kassel, Germany.
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7
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Hsiao JH, Chen SW, Hung BY, Uma K, Chen WC, Kuo CC, Lin JH. Resonant energy transfer and light scattering enhancement of plasmonic random lasers embedded with silver nanoplates. RSC Adv 2020; 10:7551-7558. [PMID: 35492161 PMCID: PMC9049829 DOI: 10.1039/c9ra10462c] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 01/14/2020] [Indexed: 11/21/2022] Open
Abstract
The resonant energy transfer enhancement from a plasmonic random laser (PRL) has been investigated by means of a dye-covered PVA film with embedded silver nanoplates (DC-PVA/AgNPs). Different sizes and morphologies of AgNPs were adopted to shift the localized surface plasmon resonance (LSPR) and intensify recurrent light scattering between the AgNPs. For better overlap between surface plasmon resonance and the photoluminescence of fluorescent molecules with appropriately-sized silver nanoprisms, the slope efficiency of the PRL was greatly enhanced and the lasing threshold was obviously reduced. In addition, the photon lifetime for the DC-PVA/AgNPs film reveals an apparent decline around 1.39 ns owing to better coupling with LSPR. The stronger light scattering of samples with bigger-sized silver nanoprisms has been demonstrated by coherent back scattering measurements, which reveals a smaller transport mean free path around 3.3 μm. With α-stable analysis, it has been successfully demonstrated that the tail exponent α can be regarded as an identifier of the threshold of random lasing. The resonant energy transfer enhancement from a plasmonic random laser has been investigated by means of a dye-covered PVA film embedded with silver nanoplates with different sizes and morphologies.![]()
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Affiliation(s)
- Jia-Huei Hsiao
- National Taipei University of Technology
- Taipei 106
- Taiwan
| | - Shih-Wen Chen
- Department of Chemical Engineering and Biotechnology
- National Taipei University of Technology
- Taipei 106
- Taiwan
| | - Bing-Yi Hung
- National Taipei University of Technology
- Taipei 106
- Taiwan
| | - Kasimayan Uma
- National Taipei University of Technology
- Taipei 106
- Taiwan
| | - Wei-Cheng Chen
- Institute of Organic and Polymeric Materials
- National Taipei University of Technology
- Taipei 106
- Taiwan
| | - Chi-Ching Kuo
- Institute of Organic and Polymeric Materials
- National Taipei University of Technology
- Taipei 106
- Taiwan
| | - Ja-Hon Lin
- National Taipei University of Technology
- Taipei 106
- Taiwan
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8
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Zhang ZZ, Yin LC, Xu XL, Xia JY, Xie K, Zou G, Zhang XJ, Hu ZJ, Zhang QJ. Near-field scattering enhancement of perylene based aggregates for random lasing. CHINESE J CHEM PHYS 2019. [DOI: 10.1063/1674-0068/cjcp1807167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Zhen-zhen Zhang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, Department of Chemistry, Anhui Key Laboratory of Optoelectronic Science and Technology, University of Science and Technology of China, Hefei 230026, China
| | - Lei-cheng Yin
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, Department of Chemistry, Anhui Key Laboratory of Optoelectronic Science and Technology, University of Science and Technology of China, Hefei 230026, China
| | - Xiao-long Xu
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, Department of Chemistry, Anhui Key Laboratory of Optoelectronic Science and Technology, University of Science and Technology of China, Hefei 230026, China
| | - Jiang-ying Xia
- School of Instrument Science and Opto-electronic Engineering, Hefei University of Technology, Hefei 230009, China
| | - Kang Xie
- School of Instrument Science and Opto-electronic Engineering, Hefei University of Technology, Hefei 230009, China
| | - Gang Zou
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, Department of Chemistry, Anhui Key Laboratory of Optoelectronic Science and Technology, University of Science and Technology of China, Hefei 230026, China
| | - Xiao-juan Zhang
- Aston Institute of Photonic Technologies, Aston University, Birmingham B47ET, UK
| | - Zhi-jia Hu
- School of Instrument Science and Opto-electronic Engineering, Hefei University of Technology, Hefei 230009, China
- Aston Institute of Photonic Technologies, Aston University, Birmingham B47ET, UK
- State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621000, China
| | - Qi-jin Zhang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, Department of Chemistry, Anhui Key Laboratory of Optoelectronic Science and Technology, University of Science and Technology of China, Hefei 230026, China
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9
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Safdar A, Wang Y, Krauss TF. Random lasing in uniform perovskite thin films. OPTICS EXPRESS 2018; 26:A75-A84. [PMID: 29402057 DOI: 10.1364/oe.26.000a75] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 11/02/2017] [Indexed: 06/07/2023]
Abstract
Following the very promising results obtained by the solar cell community, metal halide perovskite materials are increasingly attracting the attention of other optoelectronics researchers, especially for light emission applications. Lasing with both engineered and self-assembled resonator structures, such as microcrystal networks, has now been successfully observed, with the low cost and the simple solution-based process being a particular attraction. The ultimate in simplicity, however, would be to observe lasing from a continuous thin film, which has not been reported yet. Here, we show random lasing action from such a simple perovskite layer. Our lasers work at room temperature; they are deposited on unpatterned glass substrates and they exhibit a minimum threshold value of 10 µJ/cm2. By carefully controlling the solution processing conditions, we can determine whether random lasing occurs or not, using identical precursors. A rather special feature is that some of the films exhibit single and dual mode lasing action, which is rarely observed in random lasers. Our work fully exploits the simplicity of the solution-based process and thereby adds an important capability into the emerging field of perovskite-based light emitters.
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10
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Tang B, Zhang Z, Liu H, Zhang H. Amplified spontaneous emission, optical waveguide and polarized emission based on 2,5-diaminoterephthalates. CHINESE CHEM LETT 2017. [DOI: 10.1016/j.cclet.2017.08.045] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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11
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Aviv H, Berezin S, Agai O, Sinwani M, Tischler YR. Deposition and Characterization of Roughened Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:1810-1815. [PMID: 28157325 DOI: 10.1021/acs.langmuir.6b04392] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Phase separation occurs whenever a solvent leaves a solution of strongly incompatible polymers. This can happen in bulk and in films. Films can be tailored as substrates for multiple applications such as solar cells, surface catalysis, and antireflection coatings. In this study, polystyrene (PS) was dissolved with polyvinyl acetate (PVAc) in different ratios using chlorobenzene as the solvent. Thin films of different ratios of PS and PVAc were deposited on glass via spin coating. The deposited films were investigated for their morphology, strain, surface area, and Raman scattering. The incompatibility between the two polymers leads to the growth of roughened PVAc islands supported by the PS matrix. A down shift in the Raman PVAc signal was observed in the combined film as compared with a 100% PVAc film, which was attributed to the high strain of PVAc that grew as tips. As the PVAc concentration in the polymer blend increases, the porous regions in the film expand and the amount and height of PVAc tips increase as well, up to the point where the pores merge to create a uniform surface. The optimal ratio for the deposition of a uniformly roughened surface is 75% PVAc and 25% PS. For demonstrating a possible application, we applied the partially roughened surface as a substrate for surface-enhanced Raman scattering and demonstrated at least 500% increase in the signal intensity measured in roughened areas. This is explained by the rod effect from the PVAc tips.
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Affiliation(s)
- Hagit Aviv
- Bar-Ilan Institute for Nanotechnology and Advanced Materials, ‡Department of Chemistry, and §Department of Physics, Bar-Ilan University , Ramat Gan 5290002, Israel
| | - Shirly Berezin
- Bar-Ilan Institute for Nanotechnology and Advanced Materials, ‡Department of Chemistry, and §Department of Physics, Bar-Ilan University , Ramat Gan 5290002, Israel
| | - Ortal Agai
- Bar-Ilan Institute for Nanotechnology and Advanced Materials, ‡Department of Chemistry, and §Department of Physics, Bar-Ilan University , Ramat Gan 5290002, Israel
| | - Miri Sinwani
- Bar-Ilan Institute for Nanotechnology and Advanced Materials, ‡Department of Chemistry, and §Department of Physics, Bar-Ilan University , Ramat Gan 5290002, Israel
| | - Yaakov R Tischler
- Bar-Ilan Institute for Nanotechnology and Advanced Materials, ‡Department of Chemistry, and §Department of Physics, Bar-Ilan University , Ramat Gan 5290002, Israel
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12
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Yin L, Liang Y, Yu B, Wu Y, Ma J, Xie K, Zhang W, Zou G, Hu Z, Zhang Q. Quantitative analysis of “Δl = l s − l g” to coherent random lasing in solution systems with a series of solvents ordered by refractive index. RSC Adv 2016. [DOI: 10.1039/c6ra19029d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Random laser action affected by solvents ordered by refractive index in solution system.
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13
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Yin L, Liang Y, Yu B, Wu Y, Ma J, Xie K, Zhang W, Zou G, Hu Z, Zhang Q. Coherent random lasing from nano-scale aggregates of hybrid molecules by enhanced near zone scattering. RSC Adv 2016. [DOI: 10.1039/c6ra10511d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Random laser boosted by chemical bond linked active scatterer based on aggregation enhanced near zone scattering.
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Affiliation(s)
- Leicheng Yin
- Key Laboratory of Soft Matter Chemistry
- Collaborative Innovation Centre of Chemistry for Energy Materials
- Department of Polymer Science and Engineering
- Anhui Key Laboratory of Optoelectronic Science and Technology
- University of Science and Technology of China
| | - Yunyun Liang
- School of Instrument Science and Opto-Electronics Engineering
- Hefei University of Technology
- Hefei
- P. R. China
| | - Bo Yu
- Key Laboratory of Soft Matter Chemistry
- Collaborative Innovation Centre of Chemistry for Energy Materials
- Department of Polymer Science and Engineering
- Anhui Key Laboratory of Optoelectronic Science and Technology
- University of Science and Technology of China
| | - Yeping Wu
- Institute of Chemical Materials
- China Academy of Engineering Physics
- Mianyang
- P. R. China
| | - Jiajun Ma
- State Key Laboratory Cultivation Base for Nonmetal Composite and Functional Materials
- Southwest University of Science and Technology
- Mianyang
- China
| | - Kang Xie
- School of Instrument Science and Opto-Electronics Engineering
- Hefei University of Technology
- Hefei
- P. R. China
| | - Wei Zhang
- School of Instrument Science and Opto-Electronics Engineering
- Hefei University of Technology
- Hefei
- P. R. China
| | - Gang Zou
- Key Laboratory of Soft Matter Chemistry
- Collaborative Innovation Centre of Chemistry for Energy Materials
- Department of Polymer Science and Engineering
- Anhui Key Laboratory of Optoelectronic Science and Technology
- University of Science and Technology of China
| | - Zhijia Hu
- School of Instrument Science and Opto-Electronics Engineering
- Hefei University of Technology
- Hefei
- P. R. China
| | - Qijin Zhang
- Key Laboratory of Soft Matter Chemistry
- Collaborative Innovation Centre of Chemistry for Energy Materials
- Department of Polymer Science and Engineering
- Anhui Key Laboratory of Optoelectronic Science and Technology
- University of Science and Technology of China
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14
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Jiao B, Yu Y, Dai Y, Hou X, Wu Z. Improvement of light extraction in organic light-emitting diodes using a corrugated microcavity. OPTICS EXPRESS 2015; 23:4055-4064. [PMID: 25836444 DOI: 10.1364/oe.23.004055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Based on the phase separation effect in the film formation process of Polystyrene and Poly(methyl methacrylate) blend solution, bottom-emitting organic light-emitting diodes (OLEDs) with corrugated microcavity was demonstrated. This device exhibited high efficiency, broad spectra and Lambertian angular emission. Compared with the traditional bottom-emitting OLEDs with ITO anode and the planar microcavity OLEDs, about 57% and 41% enhancement for external quantum efficiency was achieved in this corrugated microcavity OLEDs respectively. This improvement can be understood by the scattering effect of the quasi-periodic characteristic of this corrugated microcavity which reduces the optical loss at surface plasmon polariton modes and wave-guided modes. This work provides a simple as well as efficienct method to recover trapped light in OLEDs, which will benefit the low cost fabrication process.
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15
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Hu Z, Miao B, Wang T, Fu Q, Zhang D, Ming H, Zhang Q. Disordered microstructure polymer optical fiber for stabilized coherent random fiber laser. OPTICS LETTERS 2013; 38:4644-4647. [PMID: 24322095 DOI: 10.1364/ol.38.004644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We have demonstrated the realization of a random polymer fiber laser (RPFL) based on laser dye Pyrromethene 597-doped one-dimensional disordered polymer optical fiber (POF). The stabilized coherent laser action for the disordered POF has been obtained by the weak optical multiple scattering of the polyhedral oligomeric silsesquioxanes nanoparticles in the core of the POF in situ formed during polymerization, which was enhanced by the waveguide confinement effect. Meanwhile, the threshold of our RPFL system is almost one order of magnitude lower than that of the liquid core random fiber laser reported previously, which promotes the development of random lasers.
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Hu Z, Zhang Q, Miao B, Fu Q, Zou G, Chen Y, Luo Y, Zhang D, Wang P, Ming H, Zhang Q. Coherent random fiber laser based on nanoparticles scattering in the extremely weakly scattering regime. PHYSICAL REVIEW LETTERS 2012; 109:253901. [PMID: 23368465 DOI: 10.1103/physrevlett.109.253901] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Indexed: 06/01/2023]
Abstract
We demonstrate the realization of a coherent random fiber laser (RFL) in the extremely weakly scattering regime, which contains a dispersive solution of polyhedral oligomeric silsesquioxanes nanoparticles (NPs) and laser dye pyrromethene 597 in carbon disulfide that was injected into a hollow optical fiber. Multiple scattering of polyhedral oligomeric silsesquioxanes NPs greatly enhanced by the waveguide confinement effect was experimentally verified to account for coherent lasing observed in our RFL system. This Letter extends the NPs-based RFLs from the incoherent regime to the coherent regime.
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Affiliation(s)
- Zhijia Hu
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, Anhui Key Laboratory of Optoelectronic Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, China
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