Emission performance of scandate cathodes prepared by pulse laser deposition

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

doi:10.3724/SP.J.1146.2013.00566

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 journal › Article › peer-review

Abstract

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 language	English (US)
Pages (from-to)	754-757
Number of pages	4
Journal	Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology
Volume	36
Issue number	3
DOIs	https://doi.org/10.3724/SP.J.1146.2013.00566
State	Published - Mar 2014
Externally published	Yes

Keywords

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

ASJC Scopus subject areas

Electrical and Electronic Engineering

Online availability

10.3724/SP.J.1146.2013.00566

Library availability

Discover UIUC Full Text

Cite this

@article{96bdbbcdd9d84858994a59fd7e04cff4,

title = "Emission performance of scandate cathodes prepared by pulse laser deposition",

abstract = "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.",

keywords = "Abnormal Schottky effect, Pulse Laser Deposition (PLD), Scandate cathode, Semiconductor model",

author = "Zhen Peng and Yin, {Sheng Yi} and Qiang Zheng and Wang, {Xin Xin} and Yu Wang and Yang Li",

year = "2014",

month = mar,

doi = "10.3724/SP.J.1146.2013.00566",

language = "English (US)",

volume = "36",

pages = "754--757",

journal = "Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology",

issn = "1009-5896",

publisher = "Science Press",

number = "3",

}

TY - JOUR

T1 - Emission performance of scandate cathodes prepared by pulse laser deposition

AU - Peng, Zhen

AU - Yin, Sheng Yi

AU - Zheng, Qiang

AU - Wang, Xin Xin

AU - Wang, Yu

AU - Li, Yang

PY - 2014/3

Y1 - 2014/3

N2 - 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.

AB - 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.

KW - Abnormal Schottky effect

KW - Pulse Laser Deposition (PLD)

KW - Scandate cathode

KW - Semiconductor model

UR - http://www.scopus.com/inward/record.url?scp=84897548909&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84897548909&partnerID=8YFLogxK

U2 - 10.3724/SP.J.1146.2013.00566

DO - 10.3724/SP.J.1146.2013.00566

M3 - Article

AN - SCOPUS:84897548909

SN - 1009-5896

VL - 36

SP - 754

EP - 757

JO - Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology

JF - Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology

IS - 3

ER -

Emission performance of scandate cathodes prepared by pulse laser deposition

Abstract

Keywords

ASJC Scopus subject areas

Online availability

Library availability

Related links

Fingerprint

Cite this