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Volumn 17, Issue 9, 2005, Pages 1131-1136

Whispering-gallery-mode lasing from a semiconductor nanocrystal/ microsphere resonator composite

Author keywords

[No Author keywords available]

Indexed keywords

ABSORPTION; COLLOIDS; COMPOSITE MATERIALS; CRYSTAL DEFECTS; CRYSTAL RESONATORS; DISPERSIONS; NANOSTRUCTURED MATERIALS; OPTICAL PUMPING; Q FACTOR MEASUREMENT; SEMICONDUCTING CADMIUM COMPOUNDS; SPIN COATING; SPONTANEOUS EMISSION; SURFACE ROUGHNESS; TITANIUM COMPOUNDS;

EID: 18744378887     PISSN: 09359648     EISSN: None     Source Type: Journal    
DOI: 10.1002/adma.200401571     Document Type: Article
Times cited : (186)

References (30)
  • 20
    • 18744405648 scopus 로고    scopus 로고
    • P. T. Snee, unpublished
    • P. T. Snee, unpublished.
  • 23
  • 27
    • 18744404474 scopus 로고    scopus 로고
    • note
    • The known refractive index of 1.37 of the 6.84 μm diameter core sphere was used without adjustment in Mie calculations for coated spheres. The best fit to the data was obtained with a shell refractive index of 1.846 and an outer sphere diameter of 7.746 μm. The fitted coating size is consistent with the experimentally measured diameter of 7.66±0.11 μm, as determined by SEM images of similar samples and the experimental results from spectroscopic ellipsometry, which show that the index of refraction varies from 1.82 to 1.83 over the wavelength range of 600 to 700 nm. The refractive index (approx. 0.14 greater relative to a similar film without NCs) is consistent with the incorporation of a large (14.8 %) volume fraction of nanocrystals into the titania matrix. Note that the SEM results reveal that the sphere coating is thicker than the substrate film, perhaps due to the surface tension of the liquid sol surrounding the sphere core upon spin-casting. Differences in the fitted and measured values for the refractive index are likely due to the dependence of the index on the volume fraction of CdSe in the matrix, which varies from sample to sample.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.