Abstract
Large photo-induced absorption signals were observed in free standing porous silicon films in the spectral range from 1.1 to 2.5 eV using a femtosecond pump and probe technique. The measured nonlinear signal has a very fast component with relaxation constants from 800 fs to tens of picoseconds superimposed on the slow-relaxing thermal background. The spectral structure and relaxation dynamics of the short-lived component of transient absorption show the presence of molecular-like Si complexes with well defined energy levels and spectrally uniform picosecond relaxation dynamics.
| Original language | English |
|---|---|
| Title of host publication | Materials Research Society Symposium - Proceedings |
| Publisher | Materials Research Society |
| Pages | 179-184 |
| Number of pages | 6 |
| Volume | 405 |
| Publication status | Published - 1996 |
| Event | Proceedings of the 1995 MRS Fall Meeting - Boston, MA, USA Duration: Nov 26 1995 → Dec 1 1995 |
Other
| Other | Proceedings of the 1995 MRS Fall Meeting |
|---|---|
| City | Boston, MA, USA |
| Period | 11/26/95 → 12/1/95 |
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ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
Cite this
Femtosecond nonlinear transmission study of free-standing porous silicon films. / Klimov, Victor I; McBranch, D.; Karavanskii, V.
Materials Research Society Symposium - Proceedings. Vol. 405 Materials Research Society, 1996. p. 179-184.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Femtosecond nonlinear transmission study of free-standing porous silicon films
AU - Klimov, Victor I
AU - McBranch, D.
AU - Karavanskii, V.
PY - 1996
Y1 - 1996
N2 - Large photo-induced absorption signals were observed in free standing porous silicon films in the spectral range from 1.1 to 2.5 eV using a femtosecond pump and probe technique. The measured nonlinear signal has a very fast component with relaxation constants from 800 fs to tens of picoseconds superimposed on the slow-relaxing thermal background. The spectral structure and relaxation dynamics of the short-lived component of transient absorption show the presence of molecular-like Si complexes with well defined energy levels and spectrally uniform picosecond relaxation dynamics.
AB - Large photo-induced absorption signals were observed in free standing porous silicon films in the spectral range from 1.1 to 2.5 eV using a femtosecond pump and probe technique. The measured nonlinear signal has a very fast component with relaxation constants from 800 fs to tens of picoseconds superimposed on the slow-relaxing thermal background. The spectral structure and relaxation dynamics of the short-lived component of transient absorption show the presence of molecular-like Si complexes with well defined energy levels and spectrally uniform picosecond relaxation dynamics.
UR - http://www.scopus.com/inward/record.url?scp=0029766378&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0029766378&partnerID=8YFLogxK
M3 - Conference contribution
VL - 405
SP - 179
EP - 184
BT - Materials Research Society Symposium - Proceedings
PB - Materials Research Society
ER -