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Atomically Precise Doping in chalcogenide-based Coreless Nanocluster for Tunable Electro-/Photoelectric and Photoluminescent Properties

Atomically Precise Doping in Chalcogenide-based Coreless Nan...

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中国化学会第九届全国无机化学学术会议

作者： Lin Jian Zhang Qian Hu Dandan Wang Le Wu Tao College of Chemistry Chemical Engineering and Material ScienceSoochow University

Doping is an important andeffective tool in materials design and has been shown topromote the rapid development of practical materialsby tuning their molecular orelectronic structures to achieve some intriguing physical andchemical *** general,dopant atoms are prone to berandomly distributed in the host *** is difficult to realizeprecise doping and accurate positioning of dopant atoms in dense or porous materials,especially inamorphous or polycrystalline *** far,introducing specific dopants to desiredpositions to realize their ordered distributionremains a *** our recent works,we chose solid chalcogenide-based semiconductormaterials composed of nanocluster as model compounds to successfully investigate their atomically precise doping behaviors,in which some specific atoms could be purposelyguided into some specific *** 1:For semiconductor material(ISC-10-CdInS,Fig.1 left) composed of nanocluster with an unoccupied metal center,mono-copper and mono-manganese ionscould be brought into the nanocluster by a post-doping strategy,and the dopedsample showed an enhancement in photo-electronic response and an unusual red-shift in Mn-related ***,a broad white-light emission could be realized by Cu:Mnco-doping *** 2:For an interrupted chalcogenide-based semiconductor zeolite-analogue(CSZ-5-InSe,Fig.1 right),In ions at the interrupted sites proved to be precisely replaced by Bi ions through a pre-doping ***-doped sample exhibited a versatile regulation on the electro-catalytic activity for the oxygen reduction reaction(ORR) and photoelectric *** atomically precise doping successfully implemented in these nanocluster-based host materials with specific sitesrepresents a very promising route for accurately regulating the photoelectrical properties,photoluminescence,and other types of properties,which facilitates to spotlight or illuminate some function-structure relationships.

关键词： Nanocluster chalcogenide semiconductor Doping Photoelectric response Photoluminescence

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