Low-temperature photoacoustic spectra of BiI3 single crystals

T. Ikari, S. Shigetomi, Y. Koga, H. Nishimura, Hideki Yayama, A. Tomokiyo

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

The photoacoustic (PA) spectra of layer halide BiI3 has been studied by a piezoelectric transducer as a detector in the temperature region from 115 K to room temperature. Four peaks of G (1.97 eV), A (2.03 eV), B (2.17 eV), and C (2.38 eV) are observed in the PA spectra at 115 K. Peaks A and B are explained by the transition of the ground and the first excited states of the direct exciton. The onset of the transitions from the spin-orbit split valence band occurs at peak C. The decrease of the PA signal which begins at peak C is interpreted by the generation of the different pathways for the relaxation of the excited carriers. Since the intensity of the peak G varies from sample to sample and the peak has not been observed in the photoluminescence measurements, the origin of the peak G is attributed to the nonradiative transitions of the extrinsic centers. This capability to observe the nonradiative-decay processes is one of the chief advantages for the PA measurements.

Original languageEnglish
Pages (from-to)886-890
Number of pages5
JournalPhysical Review B
Volume37
Issue number2
DOIs
Publication statusPublished - Jan 1 1988

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single crystals
piezoelectric transducers
halides
excitons
valence
orbits
photoluminescence
detectors
decay
room temperature
excitation
temperature

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

Ikari, T., Shigetomi, S., Koga, Y., Nishimura, H., Yayama, H., & Tomokiyo, A. (1988). Low-temperature photoacoustic spectra of BiI3 single crystals. Physical Review B, 37(2), 886-890. https://doi.org/10.1103/PhysRevB.37.886

Low-temperature photoacoustic spectra of BiI3 single crystals. / Ikari, T.; Shigetomi, S.; Koga, Y.; Nishimura, H.; Yayama, Hideki; Tomokiyo, A.

In: Physical Review B, Vol. 37, No. 2, 01.01.1988, p. 886-890.

Research output: Contribution to journalArticle

Ikari, T, Shigetomi, S, Koga, Y, Nishimura, H, Yayama, H & Tomokiyo, A 1988, 'Low-temperature photoacoustic spectra of BiI3 single crystals', Physical Review B, vol. 37, no. 2, pp. 886-890. https://doi.org/10.1103/PhysRevB.37.886
Ikari T, Shigetomi S, Koga Y, Nishimura H, Yayama H, Tomokiyo A. Low-temperature photoacoustic spectra of BiI3 single crystals. Physical Review B. 1988 Jan 1;37(2):886-890. https://doi.org/10.1103/PhysRevB.37.886
Ikari, T. ; Shigetomi, S. ; Koga, Y. ; Nishimura, H. ; Yayama, Hideki ; Tomokiyo, A. / Low-temperature photoacoustic spectra of BiI3 single crystals. In: Physical Review B. 1988 ; Vol. 37, No. 2. pp. 886-890.
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