Publication Type |
Journal Article |
School or College |
College of Science |
Department |
Physics |
Creator |
Vardeny, Zeev Valentine |
Other Author |
Han, S. G.; Hess, B. C.; Kanner, G. S.; Nitta, S. |
Title |
Studies of picosecond carrier dynamics in polysilane alloys: evidence for geminate recombination in small hydrogenated amorphous silicon clusters |
Date |
1990 |
Description |
The ultrafast photocarrier dynamics in polysilane alloys amorphous (SiH2)n' has been studied using the picosecond photoinduced absorption (PA) technique. For excitation below the optical gap, the PA response decays exponentially and is faster at low temperatures. This is interpreted in terms of e-h geminate recombination in the small clusters (~ 10 A) of αSi:H embedded in the polysilane matrix. The PA response with above-gap excitation t-ß (ß<1), independent of spectral range between 1.4 and 2.2 eV. This shows that the e-h distance after above-gap photogeneration is larger than the size of the αSi:H clusters. |
Type |
Text |
Publisher |
American Institute of Physics (AIP) |
Journal Title |
Applied Physics Letters |
Volume |
57 |
Issue |
12 |
First Page |
1215 |
Last Page |
1217 |
DOI |
10.1063/1.104228 |
citatation_issn |
36951 |
Subject |
Picosecond carrier dynamics; Polysilane alloys; Geminate recombination; a-Si:H; Amorphous silicon; Ultrafast relaxation; Photoexcited carriers |
Subject LCSH |
Amorphous semiconductors -- Optical properties |
Language |
eng |
Bibliographic Citation |
Han, S. G., Hess, B. C., Kanner, G. S., Vardeny, Z. V., & Nitta, S. (1990). Studies of picosecond Carrier dynamics in polysilane alloys; evidence for geminate recombination in small hydrogenated amorphous silicon clusters. Applied Physics Letters, 57(12), 1215-7. |
Rights Management |
(c)American Institute of Physics. The following article appeared in Han, S. G., Hess, B. C., Kanner, G. S., Vardeny, Z. V., & Nitta, S., Applied Physics Letters, 57, 1990 and may be found at http://dx.doi.org/10.1063/1.104228 |
Format Medium |
application/pdf |
Format Extent |
536,999 bytes |
Identifier |
ir-main,9664 |
ARK |
ark:/87278/s6g16jfx |
Setname |
ir_uspace |
ID |
707052 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6g16jfx |