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Details for article 10 of 11 found articles
| Title: |
Study of photoconductivity and persistent photoconductivity in sulphur-doped amorphous hydrogenated silicon |
| Author: |
Jasmina, R. M. Mehra Mathur, P. C. Taylor, P. C. |
| Appeared in: |
International journal of electronics |
| Paging: | Volume 86 (1999) nr. 11 pages 1321-1332 |
| Year: |
1999-11-01 |
| Contents: |
We report on the spectral response and intensity dependence of photoconductivity (PC) and persistent photoconductivity (PPC) in plasma-enhanced chemical vapour deposition grown sulphur-doped n-type a-Si:H films. From the intensity dependence of PC it is found that the addition of sulphur changes the recombination mechanism from monomolecular for intrinsic and low-doped films to bimolecular at a high sulphur doping level. The photo-induced metastable increase of dark conductivity in these films is found to be quite similar to that for compensated and doping-modulated a-Si:H films. The PPC effect is detectable up to an illumination temperature of at least 380 K the highest temperature used in this study. At 300 K the conduction persists at a level of one order higher than the equilibrium dark conductivity for over 103 s after removing the excitation. The PPC in a-Si, S:H is explained in terms of the valence alternation pair model. |
| Publisher: |
Taylor & Francis |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 10 of 11 found articles
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