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