中国物理B ›› 2016, Vol. 25 ›› Issue (8): 86801-086801.doi: 10.1088/1674-1056/25/8/086801

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Stable structure and optical properties of fused silica with NBOHC-E' defect

Peng-Fei Lu(芦鹏飞), Li-Yuan Wu(伍力源), Yang Yang(杨阳), Wei-Zheng Wang(王唯正), Chun-Fang Zhang(张春芳), Chuang-Hua Yang(杨创华), Rui Su(苏锐), Jun Chen(陈军)   

  1. 1 State Key Laboratory of Information Photonics and Optical Communications, Ministry of Education, Beijing University of Posts and Telecommunications(BUTP), Beijing 100876, China;
    2 State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China;
    3 Beijing Computational Science Research Center, Beijing 100084, China;
    4 School of Physics and Telecommunication Engineering, Shaanxi University of Technology, Hanzhong 723001, China;
    5 Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
  • 收稿日期:2016-01-18 修回日期:2016-04-04 出版日期:2016-08-05 发布日期:2016-08-05
  • 通讯作者: Peng-Fei Lu E-mail:photon.bupt@gmail.com
  • 基金资助:
    Project supported by the National Basic Research Program of China (Grant No. 2014CB643900), the Open Fund of IPOC (BUPT), the Open Program of State Key Laboratory of Functional Materials for Informatics, the National Natural Science Foundation for Theoretical Physics Special Fund "Cooperation Program" (Grant No. 11547039), and Shaanxi Provincial Institute of Scientific Research Plan Projects, China (Grant No. SLGKYQD2-05).

Stable structure and optical properties of fused silica with NBOHC-E' defect

Peng-Fei Lu(芦鹏飞)1,2, Li-Yuan Wu(伍力源)1, Yang Yang(杨阳)1, Wei-Zheng Wang(王唯正)1, Chun-Fang Zhang(张春芳)3, Chuang-Hua Yang(杨创华)4, Rui Su(苏锐)3, Jun Chen(陈军)5   

  1. 1 State Key Laboratory of Information Photonics and Optical Communications, Ministry of Education, Beijing University of Posts and Telecommunications(BUTP), Beijing 100876, China;
    2 State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China;
    3 Beijing Computational Science Research Center, Beijing 100084, China;
    4 School of Physics and Telecommunication Engineering, Shaanxi University of Technology, Hanzhong 723001, China;
    5 Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
  • Received:2016-01-18 Revised:2016-04-04 Online:2016-08-05 Published:2016-08-05
  • Contact: Peng-Fei Lu E-mail:photon.bupt@gmail.com
  • Supported by:
    Project supported by the National Basic Research Program of China (Grant No. 2014CB643900), the Open Fund of IPOC (BUPT), the Open Program of State Key Laboratory of Functional Materials for Informatics, the National Natural Science Foundation for Theoretical Physics Special Fund "Cooperation Program" (Grant No. 11547039), and Shaanxi Provincial Institute of Scientific Research Plan Projects, China (Grant No. SLGKYQD2-05).

摘要: First-principles method is used to simulate the stable structure and optical properties of a 96-atom fused silica. The preferable structure of NBOHC-E' (non-bridging oxygen hole center (NBOHC) and E' center) pair defect is predicted to be located at 2.4 Å for the Si-O bond length. The quasi-particle G0W0 calculations are performed and an accurate band gap is obtained in order to calculate the optical absorption properties. With the stretching of the Si1-O1 bond, an obvious redshift can be observed in the absorption spectrum. In the case of NBOHC-E' pair, the p-orbital DOS of Si1 atom will shift to the conduction band. Two obvious absorption peaks can be observed in the absorption spectrum. The calculation reproduced the peak positions of the well-known optical absorption bands.

关键词: fused silica, NBOHC-E', electronic structure, optical properties

Abstract: First-principles method is used to simulate the stable structure and optical properties of a 96-atom fused silica. The preferable structure of NBOHC-E' (non-bridging oxygen hole center (NBOHC) and E' center) pair defect is predicted to be located at 2.4 Å for the Si-O bond length. The quasi-particle G0W0 calculations are performed and an accurate band gap is obtained in order to calculate the optical absorption properties. With the stretching of the Si1-O1 bond, an obvious redshift can be observed in the absorption spectrum. In the case of NBOHC-E' pair, the p-orbital DOS of Si1 atom will shift to the conduction band. Two obvious absorption peaks can be observed in the absorption spectrum. The calculation reproduced the peak positions of the well-known optical absorption bands.

Key words: fused silica, NBOHC-E', electronic structure, optical properties

中图分类号:  (Amorphous semiconductors, glasses)

  • 68.35.bj
71.23.-k (Electronic structure of disordered solids) 67.80.dj (Defects, impurities, and diffusion)