The coherent {100} and {110} interfaces between rocksalt-PbTe and zincblende-CdTe

Groiß, Heiko; Heiß, Wolfgang; Schäffler, F.; Leitsmann, R.; Bechstedt, F.; Koike, Kazuto; Harada, Hisashi; Yano, Mitsuaki

doi:10.1016/j.jcrysgro.2006.11.067

Cited by 4 publications

(2 citation statements)

References 14 publications

(12 reference statements)

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“…It has been well documented that the growth direction of cubic structured wires is along h100i with sidewalls of {110} due to their relatively low surface energies. [25,26] To understand the driving force for the branch formation and why the branches have a WZ structure, we should examine the surface structure of ZB and WZ phases in one-dimensional (1D) nanostructures. The branch grows in the favorite growth direction along the c axis (0001) with exposed surface being {0110}.…”

Section: Growth Mechanismmentioning

confidence: 99%

Growth, Cathodoluminescence and Field Emission of ZnS Tetrapod Tree‐like Heterostructures

Chen¹,

Zou²,

Liu³

et al. 2008

Adv Funct Materials

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We report the growth mechanism, cathodoluminescence and field emission of dual phase ZnS tetrapod tree‐like heterostructures. This novel heterostructures consist of two phases: zinc blende for the trunk and hexagonal wurtzite for the branch. Direct evidence is presented for the polarity induced growth of tetrapod ZnS trees through high‐resolution electron microscopy study, demonstrating that Zn‐terminated ZnS (111)/(0001) polar surface is chemically active and S‐terminated (${\bar 1}$${\bar 1}$${\bar 1}$)/(000$\bar 1$) polar surface is inert in the growth of tetrapod ZnS trees. Two strong UV emissions centered at 3.68 and 3.83 eV have been observed at room temperature, which are attributed to the bandgap emissions from the zinc blende trunk and hexagonal wurtzite branch, indicating that such structures can be used as unique electromechanical and optoelectronic components in potential light sources, laser and light emitting display devices. In addition, the low turn‐on field (2.66 Vµm−1), high field‐enhancement factor (over 2600), large current density (over 30 mAcm−2 at a macroscopic field of 4.33 Vµm−1) and small fluctuation (∼1%) further indicate the availability of ZnS tetrapod tree‐like heterostructures for field emission panel display. This excellent field‐emission property is attributed to the specific crystallographic feature with high crystallinity and cone‐shape patterned branch with nanometer‐sized tips. Such a structure may optimize the FE properties and make a promising field emitter.

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Section: Growth Mechanismmentioning

confidence: 99%

Growth, Cathodoluminescence and Field Emission of ZnS Tetrapod Tree‐like Heterostructures

Chen¹,

Zou²,

Liu³

et al. 2008

Adv Funct Materials

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“…To determine , a series of heterostructure superlattices were constructed with interfaces oriented along crystal planes most commonly observed in zincblende and wurtzite NCs. 5,16 These interfaces as well as their corresponding energies are presented in Table I. Although standard supercell techniques are capable of determining the of the nonpolar interfaces, the lack of inversion symmetry in wurtzite and zincblende crystals makes the isolation of polar interface energies nontrivial.…”

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confidence: 99%

Ab initio thermodynamic model to assess stability of heterostructure nanocrystals

Sadowski

Ramprasad

2010

Applied Physics Letters

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The tendency for homogenization of CdSe-CdTe heterostructure semiconductor nanocrystals (NCs) with an abrupt interface has been studied using a phenomenological model with parameters determined by ab initio density functional theory. Results indicate that wurtzite-based CdSe-CdTe heterostructure NCs with sizes greater than ∼1000 Å are the most stable, preferring an abrupt interface below 500 K.

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Molecular Beam Epitaxy of IV–VI Semiconductors

Springholz

2018

Molecular Beam Epitaxy

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The coherent {100} and {110} interfaces between rocksalt-PbTe and zincblende-CdTe

Cited by 4 publications

References 14 publications

Growth, Cathodoluminescence and Field Emission of ZnS Tetrapod Tree‐like Heterostructures

Growth, Cathodoluminescence and Field Emission of ZnS Tetrapod Tree‐like Heterostructures

Ab initio thermodynamic model to assess stability of heterostructure nanocrystals

Molecular Beam Epitaxy of IV–VI Semiconductors

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