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Title: Strong photoluminescence of the porous silicon with HfO{sub 2}-filled microcavities

Greatly enhanced blue emission was observed at room temperature in the single-crystal silicon with HfO{sub 2} filled into its microcavities. The broad blue band light was emitted from both the HfO{sub 2} dielectric and the porous Si. The ferroelectricity of HfO{sub 2} enhances the blue emission from Si by its filling into the microcaivities. At the same time, HfO{sub 2} contributes to the light emission for the transitions of the defect levels for oxygen vacancy. The observation of greatly enhanced blue light emission of the porous Si filled with HfO{sub 2} dielectric is remarkable as both HfO{sub 2} and Si are highly compatible with Si-based electronic industry.
Authors:
; ; ; ;  [1]
  1. School of Physics, Shandong University, Jinan 250100 (China)
Publication Date:
OSTI Identifier:
22483095
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 25; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; DEFECTS; DIELECTRIC MATERIALS; HAFNIUM OXIDES; MONOCRYSTALS; OXYGEN; PHOTOLUMINESCENCE; POROUS MATERIALS; SILICON; TEMPERATURE RANGE 0273-0400 K; VACANCIES; VISIBLE RADIATION