典型文献
Chemically engineered dendrite growth of uniform monolayers MoS2 for enhanced photoluminescence
文献摘要：
Large area and uniform monolayer MoS2 is of great importance for optoelectronic devices but is commonly suffering from rather weak photoluminescence. Here, by engineering the concentration profiles of gaseous chemicals through extra trace amounts of water, we demonstrate the uniform dendrite-type growth of monolayer MoS2 unraveled by spatially resolved fluorescence spectroscopy, which exhibits macroscopic monolayer flakes (up to centimeter scale) with photoluminescence intensity of orders of magnitude higher than conventional chemical vapor deposition monolayer MoS2. Both spectroscopic evidence and theoretical models reveal that the fast-fractal dendrite growth can be ascribed to the extra introduced water sources that generate sufficient aqueous gas around the S-poor regions nearby the central-axis zone, leading to highly efficient Mo sources transport, accelerated S atom corrosion nearby grain edges, and/or defect sites, as well as enhanced photoemission intensity. Our results may provide new insight for high throughput fabrication of MoS2 monolayers with high yield photoluminescence efficiency.
文献关键词：
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作者姓名：
Huanhuan Su;Huizhen Zhang;Wenjing Wu;Xiang Wang;Guanghou Wang;Lin Zhou
作者机构：
National Laboratory of Solid State Microstructures, School of Physics, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093, China;Department of Electrical Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
文献出处：
引用格式：
[1]Huanhuan Su;Huizhen Zhang;Wenjing Wu;Xiang Wang;Guanghou Wang;Lin Zhou-.Chemically engineered dendrite growth of uniform monolayers MoS2 for enhanced photoluminescence)[J].中国光学快报（英文版）,2022(01):011602
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0.672814
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