PtSe2 - P2¶

1. Structure Summary¶

Last Updated	2022-12-09
Crystal Prototype	AB2
Crystal System	Rectangular
Lattice Constant a (Å)	3.737
Lattice Constant b (Å)	6.473
Space Group	P2
Formation Energy (eV/f.u.)	-0.1905

2. Mechanical Properties (PBE)¶

2.1 Stiffness Tensors¶

C_ij (N/m)	xx	yy	zz
xx	74.067	20.986	0.000
yy	20.986	74.051	0.000
zz	0.000	0.000	26.500

2.2 Compliance Tensors¶

S_ij (m/N)	xx	yy	zz
xx	0.014680	-0.004160	0.000000
yy	-0.004160	0.014683	0.000000
zz	0.000000	0.000000	0.037736

2.3 Orientation-Dependent Mechanical Properties¶

2.4 Anisotropic Mechanical Properties Of 2D Singlecrystal¶

Mechanical Properties	Min	Max	Anisotropy
Young’s Modulus (N/m)	68.052	68.120	1.001
Shear Modulus (N/m)	26.500	26.536	1.001
Poisson’s Ratio	0.283	0.284	1.002

2.5 Anisotropic Mechanical Properties Of 2D Polycrystal¶

Mechanical Properties	Min	Max	Anisotropy
Young’s Modulus (N/m)	47.523	47.522	1.001
Shear Modulus (N/m)	26.518	26.518	1.001

3. Fundmental Electronic Properties¶

Band Character	Indirect
Band Gap (PBE, eV)	1.3542
Band Gap (HSE, eV)	1.9323
Ionization Energy (HSE, eV)	-6.197
Electron Affinity (HSE, eV)	-4.265
Effective Mass of Electron Max. (m₀)	1.389
Effective Mass of Electron Min. (m₀)	0.605
Effective Mass of Hole Max. (m₀)	4.723
Effective Mass of Hole Min. (m₀)	0.155
Location of Valence Band Maximum	[0.000000, 0.000000]
Location of Conduction Band Minimum	[0.000000, 0.000000]

3.1 Global Band Structure (PBE)¶

3.2 Band Structure and Density of States (PBE)¶

3.3 Projected Band Structure and Density of States (PBE)¶

../_images/BAND_PDOS_Pt-PtSe2_P2_1^m.png

../_images/BAND_PDOS_Se-PtSe2_P2_1^m.png

3.4 Orientation-Dependent effective Masses (PBE)¶

4. Optical Spectrums (HSE)¶

5. Phonon Spectrum and Density of States (PBE)¶

../_images/phonon_BAND_LDOS-PtSe2_P2_1^m.png

References¶

Note

For more details of this database, please refer to the following reference.

[1] V. Wang, G. Tang, Y.-C. Liu, R.-T. Wang, H. Mizuseki, Y. Kawazeo, J. Nara, W.-T. Geng, High-Throughput Computational Screening of Two-Dimensional Semiconductors, Journal of Physical Chemistry Letters 13, 11581 (2022).

License¶

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