Continuous‐wave laser irradiation to form Cd1−xZnxSe shell on CdSe QDs in silicate glasses

Continuous‐wave laser irradiation to form Cd1−xZnxSe shell on CdSe QDs in silicate glasses

CdSe QDs with Cd1−xZnxSe shell structures were precipitated inside silicate glasses by continuous‐wave laser irradiation (λ = 532 nm) without any heat‐treatment process. Emission from the surface defects (λ ≈ 620 nm) was quenched significantly and the lifetimes of the band‐edge emission was increase...

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Veröffentlicht in:Journal of the American Ceramic Society 2019-08, Vol.102 (8), p.4555-4561
Hauptverfasser: Lee, Hojeong, Park, Won Ji, Heo, Jong
Format: Artikel
Sprache:eng
Schlagworte:
Emission
Heat treatment
Irradiation
Lasers
Surface defects
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Zusammenfassung:CdSe QDs with Cd1−xZnxSe shell structures were precipitated inside silicate glasses by continuous‐wave laser irradiation (λ = 532 nm) without any heat‐treatment process. Emission from the surface defects (λ ≈ 620 nm) was quenched significantly and the lifetimes of the band‐edge emission was increased. During the laser irradiation, Zn ions were gradually incorporated into the outer region of CdSe QDs to form Cd1−xZnxSe (0.76 ≤ x ≤ 0.8) alloy shells.
ISSN:0002-7820
1551-2916
DOI:10.1111/jace.16327