Anomalous optical and ESR properties of doped polydiethynylsilanes

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Publication Type Journal Article
School or College College of Science
Department Physics
Creator Vardeny, Zeev Valentine
Other Author Ni, Q.-X.; Shinar, J.; Grigoras, S.; Pang, Y.; Ijadi-Maghsoodi, S.; Barton, T. J.
Title Anomalous optical and ESR properties of doped polydiethynylsilanes
Date 1991-09
Description The optical, transport, and ESR properties of soluble conducting four-membered polydiethynylsilane heterocycles are described. The undoped one-dimensional gap is 2.0 eV in both films and solutions; no photoluminescence is observed. I2 doping induces a single absorption band at -1.05 eV in solutions and lightly doped films, but another at -0.55 eV in heavily doped films. Both are correlated with strong ir-active vibrations associated with known lines in Raman scattering. The doping-induced ESR of the solutions is linear in the 1.05-eV peak, but only ~2% of the carriers yield an ESR, which is motionally narrowed. No light-induced ESR is detected. The results are discussed in relation to solitons, polarons, and bipolarons in a degenerate ground-state system.
Type Text
Publisher American Physical Society
Journal Title Physical Review B
Volume 44
Issue 11
First Page 5939
Last Page 5942
DOI 10.1103/PhysRevB.44.5939
citatation_issn 0163-1829
Subject Polydiethynylsilane; Doped polydiethynylsilanes
Subject LCSH Conducting polymers -- Optical properties; Semiconductors -- Optical properties
Language eng
Bibliographic Citation Ni, Q.-X., Shinar, J., Vardeny, Z. V., Grigoras, S., Pang, Y., Ijadi-Maghsoodi, S., & Barton, T. J. (1991). Anomalous optical and ESR properties of doped polydiethynylsilanes. Physical Review B, 44(11), 5939-42.
Rights Management (c) American Physical Society
Format Medium application/pdf
Format Extent 337,745 bytes
Identifier ir-main,9690
ARK ark:/87278/s6gf1bmx
Setname ir_uspace
Date Created 2012-06-13
Date Modified 2021-05-06
ID 702553
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