Impact factor of Chinese Physics C is 3.6 in 2023 Impact factor of Chinese Physics C is 3.6 in 2022 2021 Impact Factor 2.944
Advanced Search
Chinese Physics C> 2012, Vol. 36> Issue(6) : 531-537  DOI: 10.1088/1674-1137/36/6/009

The QE numerical simulation of PEAsemiconductor photocathode

  • Several kinds of models have already been proposed to explain the photoemission process. The exact photoemission theory of the semiconductor photocathode was not well established after decades of research. In this paper an integral equation of quantum efficiency (QE) is constructed to describe the photoemission of positive electron affinity (PEA) of the semiconductor photocathode based on the three-step photoemission model. Various factors (e.g., forbidden band gap, electron affinity, photon energy, incident angle, degree of polarization, refractive index, extinction coefficient, initial and final electron energy, relaxation time, external electric field and so on) have an impact on the QE of the PEA semiconductor photocathode, which are entirely expressed in the QE equation. In addition, a simulation code is also programmed to calculate the QE of the K2CsSb photocathode theoretically at 532 nm wavelength. By and large, the result is in line with the expected experimental value. The reasons leading to the distinction between the experimental and theoretical QE are discussed.
      PCAS:
  • 加载中

  • References

    [1] Dowell D H et al. Nucl. Instrum. Methods A, 2010, 622(3): 685-697[2] Burrill A et al. Multi-alkali photocathode development at Brookhaven National Lab for application in superconducting photoinjectors. In: Proceedings of PAC. 2005, Tennessee, USA, 2005. 2672-2674[3] Dowell D H et al. Phys. Rev. Spec. Top-Ac, 2006, 9(6): 063502[4] Dowell D H, Schmerge J F. Phys. Rev. Spec. Top-Ac, 2009, 12(7): 074201[5] Smedley J et al. Phys. Rev. Spec. Top-Ac, 2008, 11(1): 013502[6] Smedley J et al. J. Appl. Phys., 2005, 98(4): 043111[7] Spicer W E, Herrera-Gomez A. Modern theory and applications of photocathodes. In: Proceeding of SPIE 2022. San Diego, USA, 1993. 18-33[8] Jensen K L et al. J. Appl. Phys., 2006, 99(12): 124905[9] Jensen K L et al. J. Appl. Phys., 2008, 104(4): 044907[10] Hallensleben S et al. Opt. Commun, 2000, 180(1-3): 89-102[11] Motta D, Schonert S. Nucl. Instrum. Methods A, 2005, 539(1-2): 217-235[12] Kalarasse L et al. J. Phys. Chem. Solids, 2010, 71(3): 314-322[13] Bazarov I et al. Appl. Phys. Lett., 2011, 98(22): 224101[14] Cultrera. L et al. Growth And Characterization of Bialkali Photocathodes For Cornell ERL Injector. In: Proceedings of PAC2011. New York, USA. URL:www.c-ad.bnl.gov/pac2011/proceedings/papers/wep244.pdf[15] Vecchione T et al. Appl. Phys. Lett., 2011, 99(3): 034103[16] Kalarasse L et al. J. Phys. Chem. Solids, 2010, 71(12): 1732-1741[17] Ghosh C, Varma B P. J. Appl. Phys., 1978, 49(8): 4549-4553

  • Access

    加载中

Get Citation
LI Xu-Dong, GU Qiang, ZHANG Meng and ZHAO Ming-Hua. The QE numerical simulation of PEAsemiconductor photocathode[J]. Chinese Physics C, 2012, 36(6): 531-537. doi: 10.1088/1674-1137/36/6/009
LI Xu-Dong, GU Qiang, ZHANG Meng and ZHAO Ming-Hua. The QE numerical simulation of PEAsemiconductor photocathode[J]. Chinese Physics C, 2012, 36(6): 531-537.  doi: 10.1088/1674-1137/36/6/009 shu
Milestone
Received: 2011-08-30
Revised: 1900-01-01
Article Metric

Article Views(3191)
PDF Downloads(295)
Cited by(0)
Policy on re-use
To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Email This Article

Title:
Email:

The QE numerical simulation of PEAsemiconductor photocathode

    Corresponding author: LI Xu-Dong,
    Corresponding author: ZHAO Ming-Hua,
  • Received Date: 2011-08-30
  • Accepted Date: 1900-01-01
  • Available Online: 2012-06-05

Abstract: Several kinds of models have already been proposed to explain the photoemission process. The exact photoemission theory of the semiconductor photocathode was not well established after decades of research. In this paper an integral equation of quantum efficiency (QE) is constructed to describe the photoemission of positive electron affinity (PEA) of the semiconductor photocathode based on the three-step photoemission model. Various factors (e.g., forbidden band gap, electron affinity, photon energy, incident angle, degree of polarization, refractive index, extinction coefficient, initial and final electron energy, relaxation time, external electric field and so on) have an impact on the QE of the PEA semiconductor photocathode, which are entirely expressed in the QE equation. In addition, a simulation code is also programmed to calculate the QE of the K2CsSb photocathode theoretically at 532 nm wavelength. By and large, the result is in line with the expected experimental value. The reasons leading to the distinction between the experimental and theoretical QE are discussed.

    HTML

Reference (1)

目录

Link
IOPScience
SCOAP3
arXiv
Chinese Physical Society
Journal information
Introduction
Editorial Board
Others
Subscribe
Contact us
QQ: 1307685413
Tel: +86-010-88235947
Fax: +86-010-88233126
E-mail: cpc@ihep.ac.cn

  • CPC Website

  • IOP Website

  • CPC WeChat

Copyright © Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road, Beijing 100049, China 京ICP备05002789号-1

Supported by: Beijing Renhe Information Technology Co. Ltd  E-mail: info@rhhz.net

/

DownLoad:  Full-Size Img  PowerPoint
Return
Return