JJAP Conference Proceedings

JJAP Conf. Proc. 3, 011103 (2015) doi:10.7567/JJAPCP.3.011103

Fabrication and characterization of MgSi pn-junction Photodiode with a ring electrode

Kenta Daitoku1, Masaaki Takezaki1, Shuntaro Tanigawa2, Daiju Tsuya2, Haruhiko Udono1

  1. 1Ibaraki University, Hitachi, Ibaraki 316-8511, Japan
  2. 2National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0047, Japan
  • Received July 31, 2014
  • PDF (1.2 MB) |


We have fabricated Mg2Si pn-junction photodiodes with an Au-ring electrode and a SiO2 passivation layer by means of a lift-off photolithography process. Current–voltage (IV) characteristics of the photodiodes showed obvious rectifying behavior at room temperature. The ideality factor of n determined from the slope of IV characteristics was 1.76–1.92. The photodiode showed a photoresponse with threshold energy of approximately 0.6 eV under a zero-bias condition. The intensity of peak photoresponse was improved approximately three times compared with the opaque Au-circular electrode type Mg2Si photodiode previously reported.

Creative Commons License Content from this work may be used under the terms of the Creative Commons Attribution 4.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.


  1. 1 E. N. Nikitin, V. G. Bazanov, and V. I. Tarasov, Sov. Phys. Solid State 3, 2648 (1961).
  2. 2 E. N. Nikitin, E. N. Tkalenko, V. K. Zaitsev, A. I. Zaslavskii, and A. K. Kuznetsov, Inorg. Mater. 4, 1656 (1968).
  3. 3 M. I. Fedorov, V. K. Zaitsev, I. S. Eremin, E. A. Gurieva, A. T. Burkov, P. P. Konstantinov, M. V. Vedernikov, A. Yu. Samunin, G. N. Isachenko, and A. A. Shabaldin, Phys. Solid State 48, 1486 (2006).
  4. 4 R. J. LaBotz, D. R. Mason, and D. F. O’Kane, J. Electrochem. Soc. 110, 127 (1963).
  5. 5 V. K. Zaitsev, E. N. Nikitin, and E. N. Tkalenko, Sov. Phys. Solid State 11, 3000 (1969).
  6. 6 P. Koenig, D. W. Lynch, and G. C. Danielson, J. Phys. Chem. Solids 20, 122 (1961).
  7. 7 A. Stella, A. D. Brothers, R. H. Hopkins, and D. W. Lynch, Phys. Status Solidi 23, 697 (1967).
  8. 8 A. Stella and D. W. Lynch, J. Phys. Chem. Solids 25, 1253 (1964).
  9. 9 T. Kato, Y. Sago, and H. Fujiwara, J. Appl. Phys. 110, 063723 (2011).
  10. 10 H. Udono, Y. Yamanaka, M. Uchikoshi, and M. Isshiki, J. Phys. Chem. Solids 74, 311 (2013).
  11. 11 M. Takezaki, Y. Yamanaka, M. Uchikoshi, and H. Udono, Phys. Status Solidi C 10, 1812 (2013).
  12. 12 D. Zhang, C. Xue, B Cheng, S. Su, Z. Liu, X. Zhang, G. Zhang, C. Li, and Q. Wang, Appl. Phys. Lett. 102, 141111 (2013).