Abstract

We create a GaN photocathode based on graded AlxGa1?xN buffer layers to overcome the influence of buffer-emission layer interface on the photoemission of transmission-mode GaN photocathodes. A gate-shaped spectral response with a 260-nm starting wavelength and a 375-nm cut-off wavelength is obtained. Average quantum efficiency is 15% and short wavelength responses are almost equivalent to long wavelength ones. The fitted interface recombination velocity is 5?04 cm/s, with negligible magnitude, proving that the design of the graded buffer layers is efficient in obtaining good interface quality between the buffer and the emission layer.

© 2011 Chinese Optics Letters

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  1. Y. Zhang, K. Chu, X. Shao, Y. Yuan, D. Liu, X. Chen, and X. Li, Acta Opt. Sin. (in Chinese) 29, 3515 (2009).
  2. M. Zhao, J. Li, X. Wang, M. Zhou, J. Bao, and F. Gu, Acta Opt. Sin. (in Chinese) 29, 3409 (2009).
  3. J. Stock, G. Hilton, T. Norton, B. Woodgate, S. Aslam, and M. Ulmer, Proc. SPIE 5898, 58980F (2005).
  4. O. Siegmund, J. Vallerga, J. Mcphate, J. Malloya, A. Tremsin, A. Martin, M. Ulmer, and B. Wessels, Nuclear Instr. Methods in Phys. Res. A. 567, 89 (2006).
  5. J. Qiao, B. Chang, X. Du, J. Niu, and J. Zou, Acta Phys. Sin. (in Chinese) 59, 2855 (2010).
  6. A. M. Dabiran, A. M. Wowchak, and P. P. Chow, Proc. SPIE 7212, 721213 (2009).
  7. O. H. W. Siegmund, A. S. Tremsin, J. V. Vallerga, J. B. McPhate, J. S. Hull, J. Malloy, and A. M. Dabiran, Proc. SPIE 7021, 70211B (2008).
  8. X. Du, B. Chang, Y. Qian, R. Fu, P. Gao, and J. Qiao, Chinese J. Lasers (in Chinese) 37, 385 (2010).
  9. J. Qiao, B. Chang, S. Tian, X. Du, and P. Gao, Acta Phys. Sin. (in Chinese) 58, 5847 (2009).
  10. X. Du, B. Chang, Z. Zong, and Y. Qian, Opto-Electron. Eng. (in Chinese) 29, (suppl.) 55 (2002).

2010 (2)

J. Qiao, B. Chang, X. Du, J. Niu, and J. Zou, Acta Phys. Sin. (in Chinese) 59, 2855 (2010).

X. Du, B. Chang, Y. Qian, R. Fu, P. Gao, and J. Qiao, Chinese J. Lasers (in Chinese) 37, 385 (2010).

2009 (4)

J. Qiao, B. Chang, S. Tian, X. Du, and P. Gao, Acta Phys. Sin. (in Chinese) 58, 5847 (2009).

A. M. Dabiran, A. M. Wowchak, and P. P. Chow, Proc. SPIE 7212, 721213 (2009).

Y. Zhang, K. Chu, X. Shao, Y. Yuan, D. Liu, X. Chen, and X. Li, Acta Opt. Sin. (in Chinese) 29, 3515 (2009).

M. Zhao, J. Li, X. Wang, M. Zhou, J. Bao, and F. Gu, Acta Opt. Sin. (in Chinese) 29, 3409 (2009).

2008 (1)

O. H. W. Siegmund, A. S. Tremsin, J. V. Vallerga, J. B. McPhate, J. S. Hull, J. Malloy, and A. M. Dabiran, Proc. SPIE 7021, 70211B (2008).

2006 (1)

O. Siegmund, J. Vallerga, J. Mcphate, J. Malloya, A. Tremsin, A. Martin, M. Ulmer, and B. Wessels, Nuclear Instr. Methods in Phys. Res. A. 567, 89 (2006).

2005 (1)

J. Stock, G. Hilton, T. Norton, B. Woodgate, S. Aslam, and M. Ulmer, Proc. SPIE 5898, 58980F (2005).

2002 (1)

X. Du, B. Chang, Z. Zong, and Y. Qian, Opto-Electron. Eng. (in Chinese) 29, (suppl.) 55 (2002).

Aslam, S.

J. Stock, G. Hilton, T. Norton, B. Woodgate, S. Aslam, and M. Ulmer, Proc. SPIE 5898, 58980F (2005).

Bao, J.

M. Zhao, J. Li, X. Wang, M. Zhou, J. Bao, and F. Gu, Acta Opt. Sin. (in Chinese) 29, 3409 (2009).

Chang, B.

J. Qiao, B. Chang, X. Du, J. Niu, and J. Zou, Acta Phys. Sin. (in Chinese) 59, 2855 (2010).

X. Du, B. Chang, Y. Qian, R. Fu, P. Gao, and J. Qiao, Chinese J. Lasers (in Chinese) 37, 385 (2010).

J. Qiao, B. Chang, S. Tian, X. Du, and P. Gao, Acta Phys. Sin. (in Chinese) 58, 5847 (2009).

X. Du, B. Chang, Z. Zong, and Y. Qian, Opto-Electron. Eng. (in Chinese) 29, (suppl.) 55 (2002).

Chen, X.

Y. Zhang, K. Chu, X. Shao, Y. Yuan, D. Liu, X. Chen, and X. Li, Acta Opt. Sin. (in Chinese) 29, 3515 (2009).

Chow, P. P.

A. M. Dabiran, A. M. Wowchak, and P. P. Chow, Proc. SPIE 7212, 721213 (2009).

Chu, K.

Y. Zhang, K. Chu, X. Shao, Y. Yuan, D. Liu, X. Chen, and X. Li, Acta Opt. Sin. (in Chinese) 29, 3515 (2009).

Dabiran, A. M.

A. M. Dabiran, A. M. Wowchak, and P. P. Chow, Proc. SPIE 7212, 721213 (2009).

O. H. W. Siegmund, A. S. Tremsin, J. V. Vallerga, J. B. McPhate, J. S. Hull, J. Malloy, and A. M. Dabiran, Proc. SPIE 7021, 70211B (2008).

Du, X.

X. Du, B. Chang, Y. Qian, R. Fu, P. Gao, and J. Qiao, Chinese J. Lasers (in Chinese) 37, 385 (2010).

J. Qiao, B. Chang, X. Du, J. Niu, and J. Zou, Acta Phys. Sin. (in Chinese) 59, 2855 (2010).

J. Qiao, B. Chang, S. Tian, X. Du, and P. Gao, Acta Phys. Sin. (in Chinese) 58, 5847 (2009).

X. Du, B. Chang, Z. Zong, and Y. Qian, Opto-Electron. Eng. (in Chinese) 29, (suppl.) 55 (2002).

Fu, R.

X. Du, B. Chang, Y. Qian, R. Fu, P. Gao, and J. Qiao, Chinese J. Lasers (in Chinese) 37, 385 (2010).

Gao, P.

X. Du, B. Chang, Y. Qian, R. Fu, P. Gao, and J. Qiao, Chinese J. Lasers (in Chinese) 37, 385 (2010).

J. Qiao, B. Chang, S. Tian, X. Du, and P. Gao, Acta Phys. Sin. (in Chinese) 58, 5847 (2009).

Gu, F.

M. Zhao, J. Li, X. Wang, M. Zhou, J. Bao, and F. Gu, Acta Opt. Sin. (in Chinese) 29, 3409 (2009).

Hilton, G.

J. Stock, G. Hilton, T. Norton, B. Woodgate, S. Aslam, and M. Ulmer, Proc. SPIE 5898, 58980F (2005).

Hull, J. S.

O. H. W. Siegmund, A. S. Tremsin, J. V. Vallerga, J. B. McPhate, J. S. Hull, J. Malloy, and A. M. Dabiran, Proc. SPIE 7021, 70211B (2008).

Li, J.

M. Zhao, J. Li, X. Wang, M. Zhou, J. Bao, and F. Gu, Acta Opt. Sin. (in Chinese) 29, 3409 (2009).

Li, X.

Y. Zhang, K. Chu, X. Shao, Y. Yuan, D. Liu, X. Chen, and X. Li, Acta Opt. Sin. (in Chinese) 29, 3515 (2009).

Liu, D.

Y. Zhang, K. Chu, X. Shao, Y. Yuan, D. Liu, X. Chen, and X. Li, Acta Opt. Sin. (in Chinese) 29, 3515 (2009).

Malloy, J.

O. H. W. Siegmund, A. S. Tremsin, J. V. Vallerga, J. B. McPhate, J. S. Hull, J. Malloy, and A. M. Dabiran, Proc. SPIE 7021, 70211B (2008).

Malloya, J.

O. Siegmund, J. Vallerga, J. Mcphate, J. Malloya, A. Tremsin, A. Martin, M. Ulmer, and B. Wessels, Nuclear Instr. Methods in Phys. Res. A. 567, 89 (2006).

Martin, A.

O. Siegmund, J. Vallerga, J. Mcphate, J. Malloya, A. Tremsin, A. Martin, M. Ulmer, and B. Wessels, Nuclear Instr. Methods in Phys. Res. A. 567, 89 (2006).

Mcphate, J.

O. Siegmund, J. Vallerga, J. Mcphate, J. Malloya, A. Tremsin, A. Martin, M. Ulmer, and B. Wessels, Nuclear Instr. Methods in Phys. Res. A. 567, 89 (2006).

McPhate, J. B.

O. H. W. Siegmund, A. S. Tremsin, J. V. Vallerga, J. B. McPhate, J. S. Hull, J. Malloy, and A. M. Dabiran, Proc. SPIE 7021, 70211B (2008).

Niu, J.

J. Qiao, B. Chang, X. Du, J. Niu, and J. Zou, Acta Phys. Sin. (in Chinese) 59, 2855 (2010).

Norton, T.

J. Stock, G. Hilton, T. Norton, B. Woodgate, S. Aslam, and M. Ulmer, Proc. SPIE 5898, 58980F (2005).

Qian, Y.

X. Du, B. Chang, Y. Qian, R. Fu, P. Gao, and J. Qiao, Chinese J. Lasers (in Chinese) 37, 385 (2010).

X. Du, B. Chang, Z. Zong, and Y. Qian, Opto-Electron. Eng. (in Chinese) 29, (suppl.) 55 (2002).

Qiao, J.

X. Du, B. Chang, Y. Qian, R. Fu, P. Gao, and J. Qiao, Chinese J. Lasers (in Chinese) 37, 385 (2010).

J. Qiao, B. Chang, X. Du, J. Niu, and J. Zou, Acta Phys. Sin. (in Chinese) 59, 2855 (2010).

J. Qiao, B. Chang, S. Tian, X. Du, and P. Gao, Acta Phys. Sin. (in Chinese) 58, 5847 (2009).

Shao, X.

Y. Zhang, K. Chu, X. Shao, Y. Yuan, D. Liu, X. Chen, and X. Li, Acta Opt. Sin. (in Chinese) 29, 3515 (2009).

Siegmund, O.

O. Siegmund, J. Vallerga, J. Mcphate, J. Malloya, A. Tremsin, A. Martin, M. Ulmer, and B. Wessels, Nuclear Instr. Methods in Phys. Res. A. 567, 89 (2006).

Siegmund, O. H. W.

O. H. W. Siegmund, A. S. Tremsin, J. V. Vallerga, J. B. McPhate, J. S. Hull, J. Malloy, and A. M. Dabiran, Proc. SPIE 7021, 70211B (2008).

Stock, J.

J. Stock, G. Hilton, T. Norton, B. Woodgate, S. Aslam, and M. Ulmer, Proc. SPIE 5898, 58980F (2005).

Tian, S.

J. Qiao, B. Chang, S. Tian, X. Du, and P. Gao, Acta Phys. Sin. (in Chinese) 58, 5847 (2009).

Tremsin, A.

O. Siegmund, J. Vallerga, J. Mcphate, J. Malloya, A. Tremsin, A. Martin, M. Ulmer, and B. Wessels, Nuclear Instr. Methods in Phys. Res. A. 567, 89 (2006).

Tremsin, A. S.

O. H. W. Siegmund, A. S. Tremsin, J. V. Vallerga, J. B. McPhate, J. S. Hull, J. Malloy, and A. M. Dabiran, Proc. SPIE 7021, 70211B (2008).

Ulmer, M.

O. Siegmund, J. Vallerga, J. Mcphate, J. Malloya, A. Tremsin, A. Martin, M. Ulmer, and B. Wessels, Nuclear Instr. Methods in Phys. Res. A. 567, 89 (2006).

J. Stock, G. Hilton, T. Norton, B. Woodgate, S. Aslam, and M. Ulmer, Proc. SPIE 5898, 58980F (2005).

Vallerga, J.

O. Siegmund, J. Vallerga, J. Mcphate, J. Malloya, A. Tremsin, A. Martin, M. Ulmer, and B. Wessels, Nuclear Instr. Methods in Phys. Res. A. 567, 89 (2006).

Vallerga, J. V.

O. H. W. Siegmund, A. S. Tremsin, J. V. Vallerga, J. B. McPhate, J. S. Hull, J. Malloy, and A. M. Dabiran, Proc. SPIE 7021, 70211B (2008).

Wang, X.

M. Zhao, J. Li, X. Wang, M. Zhou, J. Bao, and F. Gu, Acta Opt. Sin. (in Chinese) 29, 3409 (2009).

Wessels, B.

O. Siegmund, J. Vallerga, J. Mcphate, J. Malloya, A. Tremsin, A. Martin, M. Ulmer, and B. Wessels, Nuclear Instr. Methods in Phys. Res. A. 567, 89 (2006).

Woodgate, B.

J. Stock, G. Hilton, T. Norton, B. Woodgate, S. Aslam, and M. Ulmer, Proc. SPIE 5898, 58980F (2005).

Wowchak, A. M.

A. M. Dabiran, A. M. Wowchak, and P. P. Chow, Proc. SPIE 7212, 721213 (2009).

Yuan, Y.

Y. Zhang, K. Chu, X. Shao, Y. Yuan, D. Liu, X. Chen, and X. Li, Acta Opt. Sin. (in Chinese) 29, 3515 (2009).

Zhang, Y.

Y. Zhang, K. Chu, X. Shao, Y. Yuan, D. Liu, X. Chen, and X. Li, Acta Opt. Sin. (in Chinese) 29, 3515 (2009).

Zhao, M.

M. Zhao, J. Li, X. Wang, M. Zhou, J. Bao, and F. Gu, Acta Opt. Sin. (in Chinese) 29, 3409 (2009).

Zhou, M.

M. Zhao, J. Li, X. Wang, M. Zhou, J. Bao, and F. Gu, Acta Opt. Sin. (in Chinese) 29, 3409 (2009).

Zong, Z.

X. Du, B. Chang, Z. Zong, and Y. Qian, Opto-Electron. Eng. (in Chinese) 29, (suppl.) 55 (2002).

Zou, J.

J. Qiao, B. Chang, X. Du, J. Niu, and J. Zou, Acta Phys. Sin. (in Chinese) 59, 2855 (2010).

Acta Opt. Sin. (in Chinese) (2)

Y. Zhang, K. Chu, X. Shao, Y. Yuan, D. Liu, X. Chen, and X. Li, Acta Opt. Sin. (in Chinese) 29, 3515 (2009).

M. Zhao, J. Li, X. Wang, M. Zhou, J. Bao, and F. Gu, Acta Opt. Sin. (in Chinese) 29, 3409 (2009).

Acta Phys. Sin. (in Chinese) (2)

J. Qiao, B. Chang, X. Du, J. Niu, and J. Zou, Acta Phys. Sin. (in Chinese) 59, 2855 (2010).

J. Qiao, B. Chang, S. Tian, X. Du, and P. Gao, Acta Phys. Sin. (in Chinese) 58, 5847 (2009).

Chinese J. Lasers (in Chinese) (1)

X. Du, B. Chang, Y. Qian, R. Fu, P. Gao, and J. Qiao, Chinese J. Lasers (in Chinese) 37, 385 (2010).

Nuclear Instr. Methods in Phys. Res. A. (1)

O. Siegmund, J. Vallerga, J. Mcphate, J. Malloya, A. Tremsin, A. Martin, M. Ulmer, and B. Wessels, Nuclear Instr. Methods in Phys. Res. A. 567, 89 (2006).

Opto-Electron. Eng. (in Chinese) (1)

X. Du, B. Chang, Z. Zong, and Y. Qian, Opto-Electron. Eng. (in Chinese) 29, (suppl.) 55 (2002).

Proc. SPIE (3)

A. M. Dabiran, A. M. Wowchak, and P. P. Chow, Proc. SPIE 7212, 721213 (2009).

O. H. W. Siegmund, A. S. Tremsin, J. V. Vallerga, J. B. McPhate, J. S. Hull, J. Malloy, and A. M. Dabiran, Proc. SPIE 7021, 70211B (2008).

J. Stock, G. Hilton, T. Norton, B. Woodgate, S. Aslam, and M. Ulmer, Proc. SPIE 5898, 58980F (2005).

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