Skip to main content Accessibility help
×
Home

Piezoelectric Photoacoustic Spectra In CuGaSe2 Thin Films Grown by Molecular Beam Epitaxy

  • Kenji Yoshino (a1), Daisuke Maruoka (a1), Masakazu Kawahara, Atsuhiko Fukuyama (a2), Kouji Maeda (a1), Paul J. Fons (a3), Shigeru Niki (a3), Akimasa Yamada (a3) and Tetsuo Ikari (a1)...

Abstract

The piezoelectric photoacoustic (PPA) spectra for Cu-rich CuGaSe2 (CGS)/GaAs epitaxial layers were successfully observed between liquid nitrogen and room temperatures for the first time. Bandgap energy of CGS (A band) is estimated to be 1.72 eV at liquid nitrogen temperature. The activation energies of three possible intrinsic defect levels are estimated to be about 80, 130 and 190 meV.

Copyright

References

Hide All
[1] Negami, T., Nishitani, M., Kohara, N., Hashimoto, Y. and Wada, T., Mat. Res. Soc. Symp. Proc. 426, 267 (1996).
[2] Mandel, L., Tomlinson, R. D., Hampshire, M. J., J. Cryst. Growth 36, 152 (1976).
[3] Sugiyama, K., Sawada, A., Ito, K., Iwasaki, S., Endo, T., J. Cryst. Growth 84, 673 (1987).
[4] Matsumoto, T., Kiuchi, K., Kato, T., Cryst. Res. Technol. 31, 325 (1996).
[5] Chichibu, S., Harada, Y, Uchida, M., Wakiyama, T., Matsumoto, S., Shirakata, S., Isomura, S., Higuchi, H., J. Appl. Phys. 76, 3009 (1994).
[6] Shirakata, S., Chichibu, S., J. Appl. Phys. 79, 2043 (1996).
[7] Yamada, A., Makita, Y, Niki, S., Obara, A., Fons, P., Shibata, H., Kawai, M., Chichibu, S., and Nakanishi, H., J. Appl. Phys. 79, 4318 (1996).
[8] Yamada, A., Fons, P., Niki, S., Shibata, H., Obara, A., Makita, Y, Oyanagi, H., J. Appl. Phys. 81, 2794 (1997).
[9] Ikari, T., Shigetomi, S., Koga, Y, Nishimura, H., Yayama, H. and Tomokiyo, A., Phys. Rev. B 37, 886 (1988).
[10] Yoshino, K., Kawahara, M., Maruoka, D., Fukuyama, A., Maeda, K., Miyake, H., Sugiyama, K. and Ikari, T., Proc. the 11 th ICTMC, Salford, 1997 (unpublished).
[11] Ikari, T., Yoshino, K., Shimizu, T., Fukuyama, A., Maeda, K., Fons, P., Yamada, A. and Niki, S., Proc. the 11th ICTMC, Salford, 1997 (unpublished).
[12] Fukuyama, A., Morooka, Y, Akashi, Y, Yoshino, K., Maeda, K. and Ikari, T., J. Appl. Phys. 81 7567 (1997).

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed