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Induced structural modifications in ZnS nanowires via physical state of catalyst:Highlights of 15R crystal phase

作     者:Sumit Kumar Frederic Fossard Gaelle Amiri Jean-Michel Chauveau Vincent Sallet Sumit Kumar;Frédéric Fossard;Ga?lle Amiri;Jean-Michel Chauveau;Vincent Sallet

作者机构:Groupe d'Etude de la Matiere Condensee(GEMAC)Universite Paris-SaclayCNRS-Universite de Versailles St Quentin en Yvelines45 avenue des Etats-UnisVersailles 78035France Laboratoire d'Etude des Microstructures(LEM)CNRS-ONERAUniversite Paris-Saclay29 avenue Division LeclercChatillon 92322France 

出 版 物:《Nano Research》 (纳米研究(英文版))

年 卷 期:2022年第15卷第1期

页      面:377-385页

核心收录:

学科分类:07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程(可授工学、理学学位)] 0702[理学-物理学] 

基  金:We acknowledge fruitful discussions with Dr. Frank Glas  C2N laboratory  France. S. K. would like to thank Ecole Doctorale-Interfaces  Université Paris-Saclay  UVSQ for the doctoral scholarship 

主  题:ll-VI semiconductors MOCVD vapor-liquid-solid(VLS) vapor-solid-solid(VSS) TEM analysis polytypism 

摘      要:Peculiar and unique growth mechanisms involved in semiconductor nanowires(NWs)pave the way to the achievement of new crystallographic phases and remarkable material properties,and hence,studying polytypism in semiconductor NWs arouses a strong interest for the next generation of electronic and photonic *** this context,the growth of ZnS nanowires has been investigated,as bulk ZnS compound exhibits numerous unstable polytypes at high temperatures,but their stable occurrence is highly anticipated in a nanowire due to its special quasi-dimensional shape and growth *** this work,the idea is to provide a change in the growth mechanism via the physical state of catalyst droplet(liquid or solid)and hence,study the induced structural modifications in ZnS *** HRTEM images of VLS(via liquid alloyed catalyst)grown ZnS NWs show periodic stacking faults,which is precisely identified as a stacking sequence of cubic or hexagonal individual planes leading to an astonishing 15R crystal *** crystallographic phase is observed for the first time in ***,NWs grown with VSS(via solid catalyst)show crystal polytypes of zinc blende and *** calculate and discuss the role of cohesive energies in the formation of such ZnS ***,we present the selection rules for the crystallization of such 15R structure in NWs and discuss the involved VLS and VSS growth mechanisms leading to the formation of different crystal phases.

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