Emission performance of scandate cathodes prepared by pulse laser deposition

Zhen Peng, Sheng Yi Yin, Qiang Zheng, Xin Xin Wang, Yu Wang, Yang Li

Research output: Contribution to journalArticlepeer-review


In order to improve the emission performance of cathodes to meet the demands of new type devices, this paper develops a new-type scandate cathode coated with W+BaO-Sc2O3-SrO film prepared by Pulse Laser Deposition (PLD) technology. The experiment obtains emission current characteristics measured as a function of voltage and temperature and analyzes the emission mechanism. The test results indicate that at 1100°C the current density of the new cathode reaches 305.5 A/cm2; and the layer of Ba-Sc-Sr-O is the key to this excellent performance. The abnormal Schottky effect that the cathode appears is also investigated by using semiconductor model.

Original languageEnglish (US)
Pages (from-to)754-757
Number of pages4
JournalDianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology
Issue number3
StatePublished - Mar 2014
Externally publishedYes


  • Abnormal Schottky effect
  • Pulse Laser Deposition (PLD)
  • Scandate cathode
  • Semiconductor model

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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