PHOTOLUMINESCENCE AND DECAY KINETICS OF INDIRECT FREE-EXCITONS IN DIAMONDS UNDER THE NEAR-RESONANT LASER EXCITATION

Authors
TAKIYAMA K ABDELRAHMAN MI FUJITA T ODA T
Citation
K. Takiyama et al., PHOTOLUMINESCENCE AND DECAY KINETICS OF INDIRECT FREE-EXCITONS IN DIAMONDS UNDER THE NEAR-RESONANT LASER EXCITATION, Solid state communications, 99(11), 1996, pp. 793-797
Citations number
10
Categorie Soggetti
Physics, Condensed Matter
Journal title
Solid state communications → ACNP
ISSN journal
00381098
Volume
99
Issue
11
Year of publication
1996
Pages
793 - 797
Database
ISI
SICI code
0038-1098(1996)99:11<793:PADKOI>2.0.ZU;2-J
Abstract
Indirect edge emission spectra were observed in types-IIa, -Ib and -Ia diamond crystals, excited with a pulsed laser just above the indirect band gap. In the type-IIa the lifetime of indirect free excitons was also measured, whose temperature dependence was successfully analyzed using a rate-equation model including a bound exciton formation. Weak luminescence observed in other diamonds was qualitatively explained by a strong nonradiative process related to deep impurities. Copyright ( C) 1996 Elsevier Science Ltd