Low Threshold Fabry-Perot Mode Lasing from Lead Iodide Trapezoidal Nanoplatelets
Zhong, Yangguang; Wei, Qi; Liu, Zhen; Shang, Qiuyu; Zhao, Liyun; Shao, Ruiwen; Zhang, Zhepeng; Chen, Jie; Du, Wenna; Shen, Chao; Zhang, Jun; Zhang, Yanfeng; Gao, Peng; Xing, Guichuan; Liu, Xinfeng; Zhang, Qing
Source PublicationSMALL
AbstractLead Iodide (PbI2) is a layered semiconductor with direct band gap holding great promises in green light emission and detection devices. Recently, PbI2 planar lasers are demonstrated using hexagonal whispering-gallery-mode microcavities, but the lasing threshold is quite high. In this work, lasing from vapor phase deposition derived PbI2 trapezoidal nanoplatelets (NPs) with threshold that is at least an order of magnitude lower than the previous value is reported. The growth mechanism of the trapezoidal NPs is explored and attributed to the synergistic effects of van der Waals interactions and lattice mismatching. The lasing is enabled by the population inversion of n = 1 excitons and the optical feedback is provided by the Fabry-Perot oscillation between the side facets of trapezoidal NPs. The findings not only advance the understanding of growth and photophysics mechanism of PbI2 nanostructures but also provide ideas to develop low threshold ultrathin lasers.
Keywordlayered semiconductor microcavity PbI2 small laser van der Waals epitaxy
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Indexed BySCIE
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000443012700014
The Source to ArticleWOS
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Cited Times [WOS]:14   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
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GB/T 7714
Zhong, Yangguang,Wei, Qi,Liu, Zhen,et al. Low Threshold Fabry-Perot Mode Lasing from Lead Iodide Trapezoidal Nanoplatelets[J]. SMALL,2018,14(35).
APA Zhong, Yangguang,Wei, Qi,Liu, Zhen,Shang, Qiuyu,Zhao, Liyun,Shao, Ruiwen,Zhang, Zhepeng,Chen, Jie,Du, Wenna,Shen, Chao,Zhang, Jun,Zhang, Yanfeng,Gao, Peng,Xing, Guichuan,Liu, Xinfeng,&Zhang, Qing.(2018).Low Threshold Fabry-Perot Mode Lasing from Lead Iodide Trapezoidal Nanoplatelets.SMALL,14(35).
MLA Zhong, Yangguang,et al."Low Threshold Fabry-Perot Mode Lasing from Lead Iodide Trapezoidal Nanoplatelets".SMALL 14.35(2018).
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