Journal article
Multicolor Ultralow-Threshold Random Laser Assisted by Vertical-Graphene Network
Advanced optical materials, v 6(16), pp 1800382-n/a
20 Aug 2018
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Application of lasers is omnipresent in modern-day technology. However, preparation of a lasing device usually requires sophisticated design of the materials and is costly, which may limit the suitable choice of materials and the lasing wavelengths. Random lasers, on the other hand, can circumvent the aforementioned shortcomings with simpler fabrication process, lower processing cost, material flexibility for any lasing wavelengths with lower lasing threshold, providing a roadmap for the design of super-bright lighting, displays, Li-Fi, etc. In this work, ultralow-threshold random laser action from semiconductor nanoparticles assisted by a highly porous vertical-graphene-nanowalls (GNWs) network is demonstrated. The GNWs embedded by the nanomaterials produce a suitable cavity for trapping the optical photons with semiconductor nanomaterials acting as the gain medium. The observed laser action shows ultralow values of threshold energy density approximate to 10 nJ cm(-2) due to the strong photon trapping within the GNWs. The threshold pump fluence can be further lowered to approximate to 1 nJ cm(-2) by coating Ag/SiO2 upon the GNWs due to the combined effect of photon trapping and strong plasmonic enhancement. In view of the growing demand of functional materials and novel technologies, this work provides an important step toward realization of high-performance optoelectronic devices.
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Details
- Title
- Multicolor Ultralow-Threshold Random Laser Assisted by Vertical-Graphene Network
- Creators
- Pradip Kumar Roy - National Taiwan UniversityGolam Haider - National Taiwan UniversityHung-I Lin - National Taiwan UniversityYu-Ming Liao - National Taiwan UniversityCheng-Hsin Lu - Drexel UniversityKuei-Hsien Chen - National Taiwan UniversityLi-Chyong Chen - National Taiwan UniversityWei-Heng Shih - Drexel UniversityChi-Te Liang - National Taiwan UniversityYang-Fang Chen - National Taiwan University
- Publication Details
- Advanced optical materials, v 6(16), pp 1800382-n/a
- Publisher
- Wiley
- Number of pages
- 9
- Grant note
- MOST107-3017-F-002-001 / Ministry of Science and Technology of the Republic of China; Ministry of Science and Technology, China; Ministry of Science and Technology, Taiwan 107L9006 / Advanced Research Center of Green Materials Science and Technology - Ministry of Education MOST 106-2811-M-002-118; MOST 105-2119-M-002-048-MY3 / Ministry of Science and Technology
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000442207500018
- Scopus ID
- 2-s2.0-85047840105
- Other Identifier
- 991019167423604721
UN Sustainable Development Goals (SDGs)
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Optics