Document Type
Article
Date
2004
Keywords
disordered silicons
Language
English
Disciplines
Physics
Description/Abstract
Published electron and hole drift-mobility measurements in hydrogenated amorphous silicon (a-Si:H), amorphous silicon alloys (a-SiGe:H and a-SiC:H), and microcrystalline silicon (μc-Si:H) are analysed in terms of the exponential bandtail trapping model. A three-parameter model was employed using an exponential bandtail width E, the band mobility μ0, and the attempt-toescape frequency ν. Low-temperature measurements indicate a value around μ0 = 1 cm2 V−1 s−1 for both the conduction and valence bands over the entire range of materials. High temperature-measurements for electrons in a-Si:H suggest a larger value of 7 cm2 V−1 s−1. These properties and those of the frequency ν are discussed as possible attributes of a mobility edge.
Recommended Citation
"Drift-mobility measurements and mobility-edges in disordered silicons," E. A. Schiff, J. Phys.: Condens. Matter 16, S5265-5275 (2004).
Source
harvested from author's c.v.
Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.
