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Annealing effects on the performances of Bismuth-doped Indium Zinc Oxide thin-film transistors

  • Dong Lin
  • Xudong Zheng
  • Jianwen Yang
  • Kaiwen Li
  • Jingjing Shao
  • Qun ZhangEmail author
Article
  • 132 Downloads

Abstract

In this work, annealing effects on the characteristics of bismuth-doped indium zinc oxide (IZBO) thin films and the electrical properties of IZBO thin-film transistors (TFTs) were investigated. The X-ray diffraction results reveal that all the IZBO thin films have an amorphous structure regardless of different annealing temperatures. In addition, all the a-IZBO thin films exhibit high transmittance in the visible light region. It is found that the annealing temperature has strong influences on the performances of a-IZBO TFTs. The devices annealed at 400 °C exhibit optimum performances with a field effect mobility of 25.4 cm2 V−1 s−1, a subthreshold swing of 0.22 V decade−1, a threshold voltage of −1.4 V and an on-to-off current ratio of 4.3 × 107. Stability of the devices under positive bias stress and negative bias stress were studied as well.

Notes

Acknowledgments

This work was supported by the Science and Technology Commission of Shanghai Municipality (Grant No. 16JC1400603) and the National Natural Science Foundation of China (Grant No. 61471126).

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Dong Lin
    • 1
  • Xudong Zheng
    • 1
  • Jianwen Yang
    • 1
  • Kaiwen Li
    • 1
  • Jingjing Shao
    • 1
  • Qun Zhang
    • 1
    Email author
  1. 1.Department of Materials Science, National Engineering Lab for TFT-LCD Materials and TechnologiesFudan UniversityShanghaiChina

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