Compositional modulation is driven by aliovalent doping in n-type TiCoSb based half-Heuslers for tuning thermoelectric transport

2020 ◽  
Vol 125 ◽  
pp. 106914
Author(s):  
Avinash Vishwakarma ◽  
Nagendra S. Chauhan ◽  
Ruchi Bhardwaj ◽  
Kishor Kumar Johari ◽  
Sanjay R. Dhakate ◽  
...  
Keyword(s):  
Thermoelectric Transport ◽  
Compositional Modulation ◽  
Aliovalent Doping

High-resolution z-contrast imaging of semiconductor interfaces

1989 ◽  
Vol 47 ◽  
pp. 468-469
Author(s):  
S. J. Pennycook
Keyword(s):  
High Resolution ◽  
Phase Contrast ◽  
Contrast Imaging ◽  
Compositional Modulation ◽  
Semiconductor Interfaces ◽  
Complex Figure ◽  
Thin Region ◽  
Stem Image ◽  
Annular Detector ◽  
Z Contrast

Using a high-angle annular detector on a high-resolution STEM it is possible to form incoherent images of a crystal lattice characterized by strong atomic number or Z contrast. Figure 1 shows an epitaxial Ge film on Si(100) grown by oxidation of Ge-implanted Si. The image was obtained using a VG Microscopes' HB501 STEM equipped with an ultrahigh resolution polepiece (Cs ∽1.2 mm, demonstrated probe FWHM intensity ∽0.22 nm). In both crystals the lattice is resolved but that of Ge shows much brighter allowing the interface to be located exactly and interface steps to be resolved (arrowed). The interface was indistinguishable in the phase-contrast STEM image from the same region, and even at higher resolution the location of the interface is complex. Figure 2 shows a thin region of an MBE-grown ultrathin super-lattice (Si8Ge2)100. The expected compositional modulation would show as one bright row of dots from the 2 Ge monolayers separated by 4 rows of lighter Si columns. The image shows clearly that strain-induced interdiffusion has occurred on the monolayer scale.

Thermoelectric Transport Properties of n-Type Tin Sulfide

2019 ◽  
Author(s):  
Xuegao Hu ◽  
Wenke He ◽  
Dongyang Wang ◽  
Zhiwei Huang ◽  
Li-Dong Zhao
Keyword(s):  
Transport Properties ◽  
Tin Sulfide ◽  
Thermoelectric Transport ◽  
Thermoelectric Transport Properties

scholarly journals Thermoelectric Transport Properties of TmAg Cu1-Te2 Solid Solutions

2020 ◽  
Author(s):  
Qingyu Bai ◽  
Xinyue Zhang ◽  
Bing Shan ◽  
Xuemin Shi ◽  
Cheng Sun ◽  
...  
Keyword(s):  
Transport Properties ◽  
Solid Solutions ◽  
Thermoelectric Transport ◽  
Thermoelectric Transport Properties
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