Skip to main content Accessibility help
×
Home

Defect and Tail States in Microcrystalline Silicon investigated by pulsed ESR

  • P. Kanschat (a1), H. Mell (a2), K. Lips (a1) and W. Fuhs

Abstract

We report on a detailed analysis of paramagnetic states in a doping series of microcrystalline silicon, μc-Si:H, by pulsed electron spin resonance. We identify two dangling bond like structures at g = 2.0052 (db1) and g = 2.0043 (db2). Whereas db1 is evenly distributed in the gap, the db2 state is found to be localized in the lower part of the gap. The CE resonance at g ≈ 1.998 is assigned to electrons in conduction band tail states. In p-doped samples, we observe a broad structure CH at g ≈ 2.08 which we identify with holes trapped in valence band tail states. It is shown that the CH state behaves very similar on illumination as the CE resonance. In n-type samples a pair of hyperfine split lines (A ≈ 11 mT) is found which apparently does not originate from 31P-donor states. On the basis of our results we propose a qualitative model for paramagnetic states in μc-Si:H.

Copyright

References

Hide All
1. Hasegawa, S., Narikawa, N., and Kurata, Y., Phil. Mag. B 48, 431 (1983).
2. Finger, F., Müller, J., Malten, C., and Wagner, H., Phil. Mag. B 77, 805 (1998).
3. Malten, C., Finger, F., Müller, J., and Yamasaki, S., Mat. Res. Soc. Proc. 507, 707 (1999).
4. Müller, J., Finger, F., Carius, R., and Wagner, H., Phys. Rev. B 60, 11666 (1999).
5. Kondo, M., Nishimiya, T., Saito, K., and Matsuda, A., J. Non.-Cryst. Solids. 227–230, 1031 (1998).
6. Kanschat, P., Lips, K., Brüggemann, R., Hierzenberger, A., Sieber, I., and Fuhs, W., Mat. Res. Soc. Proc. 507, 793 (1999).
7. Finger, F., Müller, J., Malten, C., Carius, R., and Wagner, H., accepted for publication in J. Non-Cryst. Solids.
8. Müller, J., PhD-Thesis (Technical University, Aachen, 1998).
9.to be published elsewhere.
10. Kanschat, P., Lips, K., and Fuhs, W., accepted for publication in J. Non-Cryst. Solids.
11. Cullis, P. R. and Marko, J. R., Phys. Rev. B 11, 4184 (1975).
12. Martini, M., Paleari, A., and Azzoni, C. B., Phys. Rev. B 39, 705 (1989).
13. Liu, X. N., Xu, Y. X., Han, S. Y., Wang, L. C., Jin, T. Z., Tong, S., and Bao, X. M., Sol. State. Comm. 92, 951 (1994).
14. Brehme, S., Kanschat, P., Lips, K., and Fuhs, W., this conference.

Defect and Tail States in Microcrystalline Silicon investigated by pulsed ESR

  • P. Kanschat (a1), H. Mell (a2), K. Lips (a1) and W. Fuhs

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