Pressure modulates the phase stability and physical properties of zinc nitride iodine

RSC Advances ◽  
2015 ◽  
Vol 5 (96) ◽  
pp. 78754-78759 ◽  
Author(s):  
Xiaofeng Li ◽  
Lin Xue ◽  
Lijuan Tang ◽  
Ziyu Hu

To explore new stable phases in metal nitride halides, the structural, electronic and optical properties, and chemical bonding characteristics of Zn2NI under pressure were studied on the basis of crystal structure predicting evolution and density function calculations.

2003 ◽  
Vol 176 (2) ◽  
pp. 567-574 ◽  
Author(s):  
Yuri Grin ◽  
Walter Schnelle ◽  
Raul Cardoso Gil ◽  
Olga Sichevich ◽  
Ralf Müllmann ◽  
...  

2019 ◽  
Vol 54 (16) ◽  
pp. 11127-11133
Author(s):  
Madalynn Marshall ◽  
Lingyi Xing ◽  
Zuzanna Sobczak ◽  
Joanna Blawat ◽  
Tomasz Klimczuk ◽  
...  

RSC Advances ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 201-209 ◽  
Author(s):  
Un-Gi Jong ◽  
Chol-Jun Yu ◽  
Yun-Hyok Kye

HSE + SOC were used to calculate the band structures of the cubic, tetragonal, and monoclinic phases of the double perovskites K2SnX6 (X = I, Br, Cl).


Nanoscale ◽  
2014 ◽  
Vol 6 (9) ◽  
pp. 4936-4941 ◽  
Author(s):  
Rui-wen Shao ◽  
Kun Zheng ◽  
Bin Wei ◽  
Yue-fei Zhang ◽  
Yu-jie Li ◽  
...  

Bandgap engineering is a common practice for tuning semiconductors for desired physical properties.


Author(s):  
Farren Curtis ◽  
Xiaopeng Wang ◽  
Noa Marom

We present an analysis of putative structures of tricyano-1,4-dithiino[c]-isothiazole (TCS3), generated within the sixth crystal structure prediction blind test. Typical packing motifs are identified and characterized in terms of distinct patterns of close contacts and regions of electrostatic and dispersion interactions. We find that different dispersion-inclusive density functional theory (DFT) methods systematically favor specific packing motifs, which may affect the outcome of crystal structure prediction efforts. The effect of crystal packing on the electronic and optical properties of TCS3 is investigated using many-body perturbation theory within theGWapproximation and the Bethe–Salpeter equation (BSE). We find that a structure withPna21symmetry and a bilayer packing motif exhibits intermolecular bonding patterns reminiscent of π–π stacking and has markedly different electronic and optical properties than the experimentally observedP21/nstructure with a cyclic dimer motif, including a narrower band gap, enhanced band dispersion and broader optical absorption. ThePna21bilayer structure is close in energy to the observed structure and may be feasible to grow.


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