+Advanced Search
Home > Archive>Volume 41, Issue 6, 2022 >1022-1029. DOI:10.11972/j.issn.1001-9014.2022.06.011
PDF HTML XML Export Cite reminder
Regulation on microstructural and optical properties of Sb2Te3 films induced by titanium doping
CSTR:
[cstr]
Author:
Affiliation:

1.Department of Optical Science and Engineering， Shanghai Ultra-Precision Optical Manufacturing Engineering Center， Fudan University， Shanghai 200438， China;2.College of Electronic and Optical Engineering， Nanjing University of Posts and Telecommunications， Nanjing 210023， China;3.Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education)， Fudan University， Shanghai 200433， China

Clc Number:

O43

Fund Project:

Supported by National Natural Science Foundation of China （60578047， 61427815）， Natural Science Foundation of Shanghai （17ZR1402200， 13ZR1402600）

  • Article
    • | |
  • Metrics
    • |
  • Reference
    • |
  • Related
    • |
  • Cited by
    • | |
  • Comments
    Abstract:

    In this work， the doping effects of Ti on the structural， linear optical properties and nonlinear absorption of Sb2Te3 thin films were systematically studied. A magnetron sputtering system and an annealing furnace are employed to prepare the crystalline Sb2Te3 samples with different doping concentrations of Ti. The X-ray photoelectron spectroscopy analysis confirmed that the Ti element exists in the Sb2Te3 films is in the form of TiTe2， in which the chemical state of Ti4+ arises. For linear optical properties， the results indicate that the Ti dopant can improve the transmittance of the Sb2Te3 films， when a wide working wavelength is used in the nonlinear devices. The optical band gap decreases from 1.32 eV to 1.25 eV for the Ti-doped Sb2Te3 films， which is dependent on the reduction of carriers according to the Burstein-Moss theory. An open-aperture Z-scan system is set up to determine the nonlinear saturated absorption of the film samples， which is excited by an 800 nm femtosecond laser at a power of 132 GW/cm2. Moreover， the adjustable behavior caused by Ti doping could be attributed to the competition between the decrease in the optical band gap and the inhibition of the crystallization. Additionally， it is interesting to ?nd that the Ti doping improves the laser damage threshold of the Sb2Te3 thin films from 188.6 to 265.5 GW/cm2. In general， the Ti-doped Sb2Te3 thin films have wide-ranging application possibilities for the field of nonlinear optical devices.

    Reference
    Related
    Cited by
Get Citation

LIAO Yuan-Jie, LI Yao-Peng, SONG Xiao-Xiao, ZHANG Xin-Tong, ZHANG Shu-Bo, ZHANG Teng-Fei, LUY Meng-Qi, LIU Zhen, ZOU Yi-Yun, ZHANG Ye, HU Er-Tao, LI Jing. Regulation on microstructural and optical properties of Sb2Te3 films induced by titanium doping[J]. Journal of Infrared and Millimeter Waves,2022,41(6):1022~1029

Copy
Share
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:June 16,2022
  • Revised:November 28,2022
  • Adopted:August 10,2022
  • Online: November 15,2022
Article QR Code
You are the first Visitors
Governing Body：中国科学院
Organizer：中国科学院上海技术物理研究所，中国光学学会
Address：上海市玉田路500号 Phone：021-25051553
51La
Journal of Infrared and Millimeter Waves ® 2025 All Rights Reserved