Optical investigation of Si1-yCy alloys (0 ≤ y ≤ 0.015)

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Autoren

  • K. Pressel
  • B. Dietrich
  • H. Rücker
  • M. Methfessel
  • H. J. Osten

Externe Organisationen

  • Leibniz-Institut für innovative Mikroelektronik (IHP)
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Seiten (von - bis)167-170
Seitenumfang4
FachzeitschriftMaterials Science and Engineering B
Jahrgang36
Ausgabenummer1-3
PublikationsstatusVeröffentlicht - Jan. 1996
Extern publiziertJa

Abstract

IR absorption was used to study the vibrational modes of substitutional carbon in strained layers of Si1-yCy (0 ≤ y = ≤ 0.015) alloys, which were grown by molecular beam epitaxy on Si (100) substrates. Satellite peaks that appear in the absorption spectrum close to the vibrational mode of substitutional carbon in the alloy are explained by a recently developed anharmonic Keating model. The interaction of substitutional carbon atoms gives rise to these peaks which can also be observed in Raman spectra. We estimate the carbon concentration and discuss the results. In photocurrent measurements on Si1-yCy/Si heterostructures we observe a shift of the absorption onset below the fundamental silicon band gap to lower energy with rising carbon concentration.

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Optical investigation of Si1-yCy alloys (0 ≤ y ≤ 0.015). / Pressel, K.; Dietrich, B.; Rücker, H. et al.
in: Materials Science and Engineering B, Jahrgang 36, Nr. 1-3, 01.1996, S. 167-170.

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Pressel, K, Dietrich, B, Rücker, H, Methfessel, M & Osten, HJ 1996, 'Optical investigation of Si1-yCy alloys (0 ≤ y ≤ 0.015)', Materials Science and Engineering B, Jg. 36, Nr. 1-3, S. 167-170. https://doi.org/10.1016/0921-5107(95)01280-X
Pressel, K., Dietrich, B., Rücker, H., Methfessel, M., & Osten, H. J. (1996). Optical investigation of Si1-yCy alloys (0 ≤ y ≤ 0.015). Materials Science and Engineering B, 36(1-3), 167-170. https://doi.org/10.1016/0921-5107(95)01280-X
Pressel K, Dietrich B, Rücker H, Methfessel M, Osten HJ. Optical investigation of Si1-yCy alloys (0 ≤ y ≤ 0.015). Materials Science and Engineering B. 1996 Jan;36(1-3):167-170. doi: 10.1016/0921-5107(95)01280-X
Pressel, K. ; Dietrich, B. ; Rücker, H. et al. / Optical investigation of Si1-yCy alloys (0 ≤ y ≤ 0.015). in: Materials Science and Engineering B. 1996 ; Jahrgang 36, Nr. 1-3. S. 167-170.
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T1 - Optical investigation of Si1-yCy alloys (0 ≤ y ≤ 0.015)

AU - Pressel, K.

AU - Dietrich, B.

AU - Rücker, H.

AU - Methfessel, M.

AU - Osten, H. J.

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AB - IR absorption was used to study the vibrational modes of substitutional carbon in strained layers of Si1-yCy (0 ≤ y = ≤ 0.015) alloys, which were grown by molecular beam epitaxy on Si (100) substrates. Satellite peaks that appear in the absorption spectrum close to the vibrational mode of substitutional carbon in the alloy are explained by a recently developed anharmonic Keating model. The interaction of substitutional carbon atoms gives rise to these peaks which can also be observed in Raman spectra. We estimate the carbon concentration and discuss the results. In photocurrent measurements on Si1-yCy/Si heterostructures we observe a shift of the absorption onset below the fundamental silicon band gap to lower energy with rising carbon concentration.

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