2009年2月17日 · We use high-resolution transmission electron microscopy to assess the formation of PbTe|CdTe and PbSe|CdSe core|shell nanoparticles by cationic exchange. We find that core and shell have the same c...

2024年2月25日 · 近年来，一个新的马约拉纳纳米线候选体系——IV-VI族半导体PbTe-超导杂化纳米线吸引了很大关注并获得了快速的研究进展。 PbTe的介电常数巨大，且具有晶格匹配的衬底，这些优势使其有潜力突破纳米线样品质量提升的瓶颈，成为 马约拉纳 零能模的研究和拓扑量子计. 选区外延生长的PbTe-超导杂化纳米线：一个可能实现拓扑量子计算的新体系 杨帅1)，张浩1)2)3)†，何珂1)2)3)4)‡ 1) 清华大学物理系, 低维量子物理国家重点实验室, 北京 100084 2) 北 …

2013年6月21日 · Our density-functional theory modeling reveals that the epitaxially grown CdTe/PbTe (111) heterostructures form metastable twisted interfaces that exhibit unusual structural and electronic properties: (1) The PbTe epilayer on CdTe(111) substrates is structurally highly distorted from the rocksalt structure within the first \ensuremath{\sim}4.5 ...

2007年10月31日 · In PbTe each atom has six nearest neighbors resulting in the rocksalt (rs) structure. The more covalent CdTe compound has a zinc-blende (zb) crystal structure and fourfold coordinated atoms.

2012年4月2日 · PbTe alloys have been the most efficient materials for thermoelectric power generation since the 1950s. In addition to the observed lattice thermal conductivity reduction by alloy scattering, recent efforts targeting electronic-transport enhancement through band structure engineering have demonstrated a design route to achieve extraordinary ...

2015年6月15日 · In this paper, heteroepitaxy of high-quality PbTe crystal on GaAs (211) using CdTe/ZnTe buffers by molecular beam epitaxy is presented for the first time. Optimal growth parameters have been obtained by both in-situ and ex-situ characterizations.

2011年2月10日 · In this article, a systematic theoretical study of PbTe-CdTe pseudo-binary systems is presented. Using ab initio and tight-binding methods, three kinds of inclusions are studied: the PbTe NWs in CdTe matrix; the CdTe A-QDs; and anti-wires (A-NWs) in PbTe matrix.

High-density two-dimensional electron gas at the metastable twisted interfaces of CdTe/PbTe (111) is investigated experimentally and theoretically. CdTe thin films grown on PbTe(111) using molecular-beam epitaxy are found to have high electron mobilities and carrier concentrations from Hall-effect measurements: 2.02 104 cm2/V s and 4.5 1018 cm−3.

6 天之前 · The PbTe film exhibits a p-type electrical conductivity with a hole density of 1.2 × 10 13 cm −2 and carrier mobility of 459 cm 2 /V·s, while the CdTe/PbTe heterojunction exhibits the inverse conductivity type with a much higher electron density of 9.8 × 10 14 cm −2 and a higher carrier mobility of 760 cm 2 /V·s.

CdTe/PbTe异质结构是研究PbTe光电及热电性质的一个重要材料体系，这源于二者具有共同的阴离子(Te）、相近的晶格常数、迥异的晶格结构(PbTe:NaCl结构;CdTe:闪锌矿结构)及较大的禁带宽度差异等独特的物理性质。