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Tailoring room temperature photoluminescence of antireflective silicon nanofacets.
- Source :
-
Journal of Applied Physics . 2014, Vol. 116 Issue 11, p114309-1-114309-7. 7p. 1 Black and White Photograph, 1 Chart, 4 Graphs. - Publication Year :
- 2014
-
Abstract
- In this paper, a fluence-dependent antireflection performance is presented from ion-beam fabricated nanofaceted-Si surfaces. It is also demonstrated that these nanofacets are capable of producing room temperature ultra-violet and blue photoluminescence which can be attributed to inter-band transitions of the localized excitonic states of different Si-O bonds at the Si/SiOx interface. Timeresolved photoluminescence measurements further confirm defect-induced radiative emission from the surface of silicon nanofacets. It is observed that the spectral characteristics remain unchanged, except an enhancement in the photoluminescence intensity with increasing ion-fluence. The increase in photoluminescence intensity by orders of magnitude stronger than that of a planar Si substrate is due to higher absorption of incident photons by nanofaceted structures. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SILICON
*PHOTOLUMINESCENCE
*PHASE transitions
*PHOTONS
*ABSORPTION
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 116
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 98425002
- Full Text :
- https://doi.org/10.1063/1.4896069