典型文献
Alkali-metal(Li,Na,and K)-adsorbed MoSi2N4 monolayer:an investigation of its outstanding electronic,optical,and photocatalytic properties
文献摘要：
Single-layer MoSi2N4,a high-quality two-dimensional material,has recently been fabricated by chemical vapor deposition.Motivated by this latest experimental work,herein,we apply first principles calculations to investigate the electronic,optical,and photocatalytic properties of alkali-metal(Li,Na,and K)-adsorbed MoSi2N4 monolayer.The electronic structure analysis shows that pristine MoSi2N4 monolayer exhibits an indirect bandgap (Eg =1.89 eV).By contrast,the bandgaps of one Li-,Na-,and K-adsorbed MoSi2N4 monolayer are 1.73 eV,1.61 eV,and 1.75 eV,respectively.Moreover,the work function of MoSi2N4 monolayer(4.80 eV) is significantly reduced after the adsorption of alkali metal atoms.The work functions of one Li-,Na-,and K-adsorbed MoSi2N4 monolayer are 1.50 eV,1.43 eV,and 2.03 eV,respectively.Then,optical investigations indicate that alkali metal adsorption processes substantially increase the visible light absorption range and coefficient of MoSi2N4 monolayer.Furthermore,based on redox potential variations after alkali metals are adsorbed,Li-and Na-adsorbed MoSi2N4 monolayers are more suitable for the water splitting photocatalytic process,and the Li-adsorbed case shows the highest potential application for CO2 reduction.In conclusion,alkali-metal-adsorbed MoSi2N4 monolayer exhibits promising applications as novel optoelectronic devices and photocatalytic materials due to its unique physical and chemical properties.
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作者姓名：
Zhiyuan Sun;Jing Xu;Nsajigwa Mwankemwa;Wenxing Yang;Xianwen Wu;Zao Yi;Shanjun Chen;Weibin Zhang
作者机构：
School of Physics and Optoelectronic Engineering,Yangtze University,Jingzhou 434023,China;School of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,China;Joint Laboratory for Extreme Conditions Matter Properties,Southwest University of Science and Technology,Mianyang 621010,China
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引用格式：
[1]Zhiyuan Sun;Jing Xu;Nsajigwa Mwankemwa;Wenxing Yang;Xianwen Wu;Zao Yi;Shanjun Chen;Weibin Zhang-.Alkali-metal(Li,Na,and K)-adsorbed MoSi2N4 monolayer:an investigation of its outstanding electronic,optical,and photocatalytic properties)[J].理论物理,2022(01):96-104
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Alkali,Li,Na,adsorbed,MoSi2N4,outstanding,optical,photocatalytic,properties,Single,quality,two,dimensional,has,recently,been,fabricated,by,chemical,vapor,deposition,Motivated,this,latest,experimental,work,herein,we,apply,first,principles,calculations,investigate,alkali,structure,analysis,shows,that,pristine,exhibits,indirect,Eg,eV,By,contrast,bandgaps,one,are,respectively,Moreover,significantly,reduced,after,adsorption,atoms,functions,Then,investigations,indicate,processes,substantially,increase,visible,light,absorption,range,coefficient,Furthermore,redox,potential,variations,metals,monolayers,suitable,water,splitting,case,highest,reduction,In,conclusion,promising,applications,novel,optoelectronic,devices,materials,due,unique,physical
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0.444166
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