Volume 36 Issue 4
Jul 2022
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LI Zuo, LIU Yun, LIAO Dalin, CHENG Lihong. First-Principles Study on Structural, Electronic and Optical Properties of G2ZT Crystal under High Pressure[J]. Chinese Journal of High Pressure Physics, 2022, 36(4): 042202. doi: 10.11858/gywlxb.20220514
Citation: LI Zuo, LIU Yun, LIAO Dalin, CHENG Lihong. First-Principles Study on Structural, Electronic and Optical Properties of G2ZT Crystal under High Pressure[J]. Chinese Journal of High Pressure Physics, 2022, 36(4): 042202. doi: 10.11858/gywlxb.20220514

First-Principles Study on Structural, Electronic and Optical Properties of G2ZT Crystal under High Pressure

doi: 10.11858/gywlxb.20220514
  • Received Date: 17 Feb 2022
  • Rev Recd Date: 06 Mar 2022
  • Accepted Date: 06 Mar 2022
  • Available Online: 22 Jun 2022
  • Issue Publish Date: 28 Jul 2022
  • Geometric structure, electronic structure and optical properties of nitrogen-rich energetic materials (bis 3, 4, 5-triamino-1, 2, 4-triazole)-5, 5′-azotetrazole (G2ZT) at high pressures are investigated using first-principles based on density functional theory. The calculated results obtained by using vdW-DF2 and PBE-D2 methods show that the crystal structure data fit well with the experimental results, and the error rates are all within 3%. Hirshfeld surface analyses indicate that interactions of the inter-molecular hydrogen bond are weaken with the increasing pressure. G2ZT crystal possesses a band gap of 2.03 eV at zero pressure, and it is a p-type semiconductor. As the pressure increases, the band gap becomes narrower and the absorption coefficient can approach 3.0×106 cm−1. These results provide a theoretical reference for further analysis of G2ZT crystal’s characteristics under high pressure.

     

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