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Publikācija: About Anomalous Redshift of Photoluminescence in Si Nanocrystals

Publication Type Full-text conference paper published in other conference proceedings
Funding for basic activity Unknown
Defending: ,
Publication language English (en)
Title in original language About Anomalous Redshift of Photoluminescence in Si Nanocrystals
Field of research 1. Natural sciences
Sub-field of research 1.3 Physical sciences
Authors Talivaldis Puritis
Jevgenijs Kaupužs
Edvīns Daukšta
Keywords Redshift, Photoluminescence, Si, nanocrystals
Abstract Although the photoluminescence (PL) maximum is shifted to a smaller wavelength if the diameter of Si nanocrystals (Si-nc) decreases (blueshift), Rama Krishna and Friesner (1992) have shown theoretically that it does not hold for the Γ-point. An anomalous redshift exists there. After 20 years this phenomenon has been verified experimentally by Yassievich a. o. Nonetheless, we have found that the existing microscopic explanation is unsatisfactory, and here we propose a scenario that elucidates this phenomenon.
Reference Puritis, T., Kaupužs, J., Daukšta, E. About Anomalous Redshift of Photoluminescence in Si Nanocrystals. In: The 13th International Conference on Global Research and Education "Inter Academia 2014": Digest, Latvia, Riga, 10-12 September, 2014. Riga: Riga Technical University, 2014, pp.254-255. ISBN 978-9934-10-583-8.
ID 19469