Interface formation energy, bonding, energy band alignment in α-NaYF4 related core shell models： For future multi-layer core shell luminescence materials-中国Betway体育网页登陆

摘要 Tobreakthroughthebottle-neckofquantumyieldinupconversion(UC)core-shellsystem,weelucidatedthattheenergytransferefficiencyincore-shellsystemhadanevidentcontributionfromthechargetransferofinterfacewithrelatedtotwofactors:(1)bandoffsetsand(2)bindingenergyareadensity.Thesetwovariablesweredeterminedbymaterialintrinsicpropertiesandcore-shellthicknessratio.Wefurtherunraveledthemechanismofnon-radiativeenergytransferbychargetransferinduceddipoleattheinterface,basedonaquasi-classicalderivationfromF?rstertyperesonantenergytransfer(FRET)model.Withstablebondingacrosstheinterface,thecontributionsonenergytransferinbothradiativeandnon-radiativeenergytransfershouldalsobeaccountedtogetherinAuzel'senergytransfer(ETU)modelincore-shellsystem.Basedonthediscussionaboutinterfacebonding,bandoffsets,andformationenergies,wefiguredoutthesignificanceofinterfacebondinginducedgapstates(IBIGS)thatplayedasignificantroleforinfluencingthechargetransferandradiativetypeenergytransfer.Theinterfacebandoffsetswereakeyfactorindominatingthenon-radiativeenergytransfer,whichwasalsocorrelatedtocore-shellthicknessratio.Wefoundthattheenergyareadensitywithrelatedtocore/shellthicknessratiofollowedthetrendofBoltzmansigmoidalgrowthfunction.Bythephysicaltrend,thisworkcontributedareferencehowthemulti-layeredcore-shellstructurewasformedstartingfromtheverybeginningwithinminimumsize.Aroutewaspavedtowardsasystematicstudyoftheinterfacetounveiltheenergytransfermechanismincore-shellsystems.

1梁大顺;沈里;王志兵;崔一平;张家雨;叶永红.Evolution of Luminescence with Shell＇s Thickness in Colloidal CdSe/CdS Core/Shell Quantum Dots.物理,2008-12.
2刘凤岐.SYNTHESIS OF POLYSTYRENE/TiO_2 CORE-SHELL MATERIALS.高分子化学,2009-02.
3Hua Liu;Changyan Cao;Ping Li;Yu Yu;Weiguo Song.Core-shell structured nanospheres with mesoporous silica shell and Ni core as a stable catalyst for hydrolytic dehydrogenation of ammonia borane.物理,2014-01.
4Li-Jia Feng;Lin-Zhi Wu;Guo-Cai Yu.The optimum layer number of multi-layer pyramidal core sandwich columns under in-plane compression.力学,2016-02.
5Dang Sheng Su;Gabriele Centi.A perspective on carbon materials for future energy application.物理,2013-02.
6Yi Wang Yangchuan Ke Jingzi Li Shouqin Du Yanfeng Xia.Dispersion behavior of core-shell silica-polymer nanoparticles.力学,2007-04.
7范桂芬;XU Xing;WANG Xiaochuan;LU Wenzhong;LIANG Fei;WANG Kai.Preparation of Ni/PZT Core-shell Nanoparticles and Their Electromagnetic Properties.材料科学与工程,2018-01.
8LI Xiangnan;CHEN Xiaoming;LI Shipu;PENG Zhiming.Synthesis and Characterization of Core-shell Hydroxyapatite/chitosan Biocomposite Nanospheres.材料科学与工程,2010-02.
9Chen Liao;Kai Fan;Ruilin Xu;Huichao Zhang;Changgui Lu;Yiping Cui;Jiayu Zhang.Laser-annealing-made amplified spontaneous emission of 'giant' CdSe/CdS core/shell nanocrystals transferred from bulk-like shell to quantum-confined core.物理,2015-05.
10解文力.Absorption Spectra and Refractive Index Changes of an Exciton in a Core/Shell Quantum Dot.物理,2015-05.

Interface formation energy, bonding, energy band alignment in α-NaYF4 related core shell models： For future multi-layer core shell luminescence materials

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