Abstract
We have studied the stress-induced splitting and shift of infrared (IR) absorption lines of platinum-hydrogen complexes in Si by Fourier-transform IR (FT-IR) spectroscopy at 10 K combined with the application of uniaxial stress. We observed several peaks at 1873.0, 1880.7, 1891.8, 1922.3, 1929.9, and 1943.0cm-1. These peaks may be due to the previously observed local vibrational modes (LVMs) of various platinum-hydrogen complexes, that is, the antisymmetric-stretching mode of (Pt-H2)°, the LVM of (Pt-H 1)°, the symmetric-stretching mode of (Pt-H2)°, LVMs of (Pt-H3)- and (Pt-H3)°, and the LVM of an unidentified platinum-hydrogen complex, respectively. The peaks of (Pt-H1)° and (Pt-H2)° split into two components under (100) compressive stress, while those of (Pt-H3)- and (Pt-H3)° did not split. We measured the stress dependence of the two split components of the (Pt-H1)° peak. The low-wavenumber component shifted by -3.2cm-1/GP&, and the high-wavenumber component shifted by 4.2 cm-1/GPa. We show that these wavenumber shifts are equal to the piezospectroscopic tensor elements, A1 and A2, respectively. We propose a structural model of the Pt-H 1 complex, where a hydrogen atom is bonded to one of four Si neighbors of the Pt atom in the {110} mirror plane perpendicular to the (110) symmetric axis with C1h symmetry.
| Original language | English |
|---|---|
| Pages (from-to) | 4392-4397 |
| Number of pages | 6 |
| Journal | Japanese Journal of Applied Physics |
| Volume | 47 |
| Issue number | 6 PART 1 |
| DOIs | |
| Publication status | Published - Jun 13 2008 |
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Keywords
- Hydrogen
- IR
- Platinum
- Si
- Stress
ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy(all)
Cite this
Stress-induced splitting and shift of infrared absorption lines of platinum-hydrogen complexes in Si. / Sato, Kimhiro; Kamiura, Yoichi; Ishiyama, Takeshi; Yamashita, Yoshifumi.
In: Japanese Journal of Applied Physics, Vol. 47, No. 6 PART 1, 13.06.2008, p. 4392-4397.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Stress-induced splitting and shift of infrared absorption lines of platinum-hydrogen complexes in Si
AU - Sato, Kimhiro
AU - Kamiura, Yoichi
AU - Ishiyama, Takeshi
AU - Yamashita, Yoshifumi
PY - 2008/6/13
Y1 - 2008/6/13
N2 - We have studied the stress-induced splitting and shift of infrared (IR) absorption lines of platinum-hydrogen complexes in Si by Fourier-transform IR (FT-IR) spectroscopy at 10 K combined with the application of uniaxial stress. We observed several peaks at 1873.0, 1880.7, 1891.8, 1922.3, 1929.9, and 1943.0cm-1. These peaks may be due to the previously observed local vibrational modes (LVMs) of various platinum-hydrogen complexes, that is, the antisymmetric-stretching mode of (Pt-H2)°, the LVM of (Pt-H 1)°, the symmetric-stretching mode of (Pt-H2)°, LVMs of (Pt-H3)- and (Pt-H3)°, and the LVM of an unidentified platinum-hydrogen complex, respectively. The peaks of (Pt-H1)° and (Pt-H2)° split into two components under (100) compressive stress, while those of (Pt-H3)- and (Pt-H3)° did not split. We measured the stress dependence of the two split components of the (Pt-H1)° peak. The low-wavenumber component shifted by -3.2cm-1/GP&, and the high-wavenumber component shifted by 4.2 cm-1/GPa. We show that these wavenumber shifts are equal to the piezospectroscopic tensor elements, A1 and A2, respectively. We propose a structural model of the Pt-H 1 complex, where a hydrogen atom is bonded to one of four Si neighbors of the Pt atom in the {110} mirror plane perpendicular to the (110) symmetric axis with C1h symmetry.
AB - We have studied the stress-induced splitting and shift of infrared (IR) absorption lines of platinum-hydrogen complexes in Si by Fourier-transform IR (FT-IR) spectroscopy at 10 K combined with the application of uniaxial stress. We observed several peaks at 1873.0, 1880.7, 1891.8, 1922.3, 1929.9, and 1943.0cm-1. These peaks may be due to the previously observed local vibrational modes (LVMs) of various platinum-hydrogen complexes, that is, the antisymmetric-stretching mode of (Pt-H2)°, the LVM of (Pt-H 1)°, the symmetric-stretching mode of (Pt-H2)°, LVMs of (Pt-H3)- and (Pt-H3)°, and the LVM of an unidentified platinum-hydrogen complex, respectively. The peaks of (Pt-H1)° and (Pt-H2)° split into two components under (100) compressive stress, while those of (Pt-H3)- and (Pt-H3)° did not split. We measured the stress dependence of the two split components of the (Pt-H1)° peak. The low-wavenumber component shifted by -3.2cm-1/GP&, and the high-wavenumber component shifted by 4.2 cm-1/GPa. We show that these wavenumber shifts are equal to the piezospectroscopic tensor elements, A1 and A2, respectively. We propose a structural model of the Pt-H 1 complex, where a hydrogen atom is bonded to one of four Si neighbors of the Pt atom in the {110} mirror plane perpendicular to the (110) symmetric axis with C1h symmetry.
KW - Hydrogen
KW - IR
KW - Platinum
KW - Si
KW - Stress
UR - http://www.scopus.com/inward/record.url?scp=55049116366&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=55049116366&partnerID=8YFLogxK
U2 - 10.1143/JJAP.47.4392
DO - 10.1143/JJAP.47.4392
M3 - Article
AN - SCOPUS:55049116366
VL - 47
SP - 4392
EP - 4397
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 6 PART 1
ER -