Hostname: page-component-7bb8b95d7b-qxsvm Total loading time: 0 Render date: 2024-09-12T07:20:15.441Z Has data issue: false hasContentIssue false

Ebic Investigation of Hydrogen Passivated Structural Defects in Efg Silicon Ribbon

Published online by Cambridge University Press:  15 February 2011

T. D. Sullivan
Affiliation:
Materials Science and Engineering, Cornell University, Bard Hall, Ithaca, New York 14853
D. G. AST
Affiliation:
Materials Science and Engineering, Cornell University, Bard Hall, Ithaca, New York 14853
Get access

Abstract

EBIC contrast of structural defects in as-received and hydrogen passivated polysilicon ribbon is studied using aluminum Schottky barrier diodes. Enhanced charge collection after passivation is demonstrated by comparing the EBIC signal from two sections of a split ribbon, one half of which was passivated. Electrical activity of specific linear defects before and after passivation is examined by recording charge collection profiles across these defects under standardized conditions of beam voltage and current. Such measurements show that passivation does reduce the electrical activity of selected defects. Possible reasons for this behavior will be discussed.

Type
Research Article
Copyright
Copyright © Materials Research Society 1981

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Pankove, J. I., Lampert, M. A. and Tarng, M. L., “Hydrogenation and dehdrogenation of amorphous and crystalline silicon,” Appl. Phys. Lett. 32 (7), 1 Apr. 1978, p. 439.Google Scholar
2. Seager, C. M. and Ginley, D. S., “Passivation of grain boundaries in polycrystalline silicon,” Appl. Phys. Lett. 34 (5), 1 March 1979, p 337.Google Scholar
3. Makino, T. and Nakamura, H., “Influence of plasma annealing on electrical properties of polycrystalline Si,” Appl. Phys. Lett. 35 (7), 1 Oct. 1979 p. 551.Google Scholar
4. Kimmerling, L. C., “Hydrogen passivation of point defects in Si,” Appl. Phys Lett. 36 (8), 15 Apr. 1980, p. 670.Google Scholar
5. Ast, D. and Sullivan, T., “Preparation of Schottky Diodes for EBIC Investigation of Grain Boundary Passivation in Si Ribbons,” DOE/JPL, Report #3, Contract No. 954852, Oct. 1979 Google Scholar
6. Seager, C. M., Guiley, D. S. and Zook, T. D., “Improvement of polycrystalline silicon solar cells with grain boundary hydrogenation techniques,” Appl. Phys. Lett. 36 (10), 15 May 1981, p. 831. Google Scholar
7. Hovel, H. J., Solar Cells, Semiconductors and Semimetals, Vol. II, Academic Press, N.Y. 1975, pp. 1012. Google Scholar
8. Donolato, C., “Contrast and resolution of SEM charge collection images of dislocations,” Appl. Phys. Lett. 34 (1), 1 Jan. 1979, p. 80.Google Scholar