Journal
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY
Volume 69, Issue -, Pages 238-242Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0921-5107(99)00302-5
Keywords
hydrogenated microcrystalline silicon; ultrafast laser spectroscopy; bimolecular recombination
Ask authors/readers for more resources
We have studied ultrafast dynamics of photoexcited carriers in mu c-Si:H by pump and probe laser spectroscopy. We have found that the dynamics of photoexcited carriers in mu c-Si:H depend on the crystallinity of the material: in the samples with low crystalline fraction, the dynamics have a fast decay and resemble those in a-Si:H, while in the samples with high crystallinity the dynamics are slower and similar to those in c-Si. We have identified an intensity dependent bimolecular recombination in the samples with lower crystalline fraction (coefficient B = 2 x 10(-10) cm(3) s(-1) for deposition with silane dilution ratio approximate to 5% at a fixed power of 6 W), and no bimolecular recombination in the samples with high crystallinity. (C) 2000 Elsevier Science S.A. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available