Studies of picosecond carrier dynamics in polysilane alloys: evidence for geminate recombination in small hydrogenated amorphous silicon clusters

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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
Date Created 2012-06-13
Date Modified 2012-06-13
ID 707052
Reference URL https://collections.lib.utah.edu/ark:/87278/s6g16jfx
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