Measurement of the optical band gap and crystal-field splitting in wurtzite CdTe.

Pierre Lefebvre; Tristan Richard; Jacques Allègre; Henry Mathieu; Anne Combette-Roos; William Granier

doi:10.1103/PhysRevB.53.15440

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Measurement of the optical band gap and crystal-field splitting in wurtzite CdTe.

Journal article

Peer reviewed

Measurement of the optical band gap and crystal-field splitting in wurtzite CdTe.

Pierre Lefebvre, Tristan Richard, Jacques Allègre, Henry Mathieu, Anne Combette-Roos and William Granier

Physical Review B: Condensed Matter and Materials Physics (1998-2015), Vol.53(23)

15/06/1996

DOI: https://doi.org/10.1103/PhysRevB.53.15440

Abstract

CdTe nanocrystals embedded in a sodium borosilicate matrix, obtained by a sol-gel process, present a wurtzite (hexagonal) structure. Low-temperature photoluminescence and absorption spectra are measured for samples containing bulklike nanocrystals large enough to suppress confinement effects. Thus, the fundamental free-exciton gap and the splitting between the A (Γv9-Γc7) and B (Γv7-Γc7) excitons of bulk wurtzite CdTe are measured. We find EAg=1653±1 meV and EAg-EBg=46.5±1.0 meV, which corresponds to a crystal-field splitting Δcr=71.6±1.5 meV.

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Title: Measurement of the optical band gap and crystal-field splitting in wurtzite CdTe.
Creators - without role: Pierre Lefebvre - ON Semiconductor
Tristan Richard - ON Semiconductor
Jacques Allègre - ON Semiconductor
Henry Mathieu - ON Semiconductor
Anne Combette-Roos - Laboratoire de Physicochimie des Matériaux Solides
William Granier - Laboratoire de Physicochimie des Matériaux Solides
Publication Details: Physical Review B: Condensed Matter and Materials Physics (1998-2015), Vol.53(23)
Identifiers: 9945486909311
Academic Unit: Université de Montpellier
Language: English
Resource Type: Journal article
Local Fields: hal-01179205