Controlling the luminescence of CdSe quantum dots in the fluorinephosphate glass

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Controlling the luminescence of CdSe quantum dots in the fluorinephosphate glass. / Колобкова, Елена; Никоноров, Николай; Кузнецова, Мария Сергеевна ; Батаев, Матвей Николаевич.

In: Journal of Non-Crystalline Solids, Vol. 646, 123248, 01.12.2024.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{25d8a77d2ccf4b22944f3f5f0c5bc5dd,

title = "Controlling the luminescence of CdSe quantum dots in the fluorinephosphate glass",

abstract = "A series of fluorophosphate glasses with CdSe and CdSe+ZnSe are successfully synthesized. After heat treatment above the glass transition temperature, CdSe quantum dots with sizes 1.5–5.5 nm are formed. The luminescence spectra of CdSe quantum dots are analyzed at various temperatures, excitation energies and chemical composition of glass. The influence of selenium content on the growth features of quantum dots is shown. The size dependence of luminescence quantum yield on the QDs size is found. The 2.0–2.5 nm-sized QDs demonstrate trap emission in the region of 1.7–1.85 eV with a maximum quantum yield of 60 %. It is found that only a broad band due to the transition from the low state of the conduction band and the shallow donor trap states to the deep accepter trap levels is observed. This broad emission band is observed at any selenium cadmium ratio and zinc introduction.",

keywords = "CdSe, Fluorine-phosphate glass, Luminescence, Quantum dot",

author = "Елена Колобкова and Николай Никоноров and Кузнецова, {Мария Сергеевна} and Батаев, {Матвей Николаевич}",

year = "2024",

month = dec,

day = "1",

doi = "10.1016/j.jnoncrysol.2024.123248",

language = "English",

volume = "646",

journal = "Journal of Non-Crystalline Solids",

issn = "0022-3093",

publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Controlling the luminescence of CdSe quantum dots in the fluorinephosphate glass

AU - Колобкова, Елена

AU - Никоноров, Николай

AU - Кузнецова, Мария Сергеевна

AU - Батаев, Матвей Николаевич

PY - 2024/12/1

Y1 - 2024/12/1

N2 - A series of fluorophosphate glasses with CdSe and CdSe+ZnSe are successfully synthesized. After heat treatment above the glass transition temperature, CdSe quantum dots with sizes 1.5–5.5 nm are formed. The luminescence spectra of CdSe quantum dots are analyzed at various temperatures, excitation energies and chemical composition of glass. The influence of selenium content on the growth features of quantum dots is shown. The size dependence of luminescence quantum yield on the QDs size is found. The 2.0–2.5 nm-sized QDs demonstrate trap emission in the region of 1.7–1.85 eV with a maximum quantum yield of 60 %. It is found that only a broad band due to the transition from the low state of the conduction band and the shallow donor trap states to the deep accepter trap levels is observed. This broad emission band is observed at any selenium cadmium ratio and zinc introduction.

AB - A series of fluorophosphate glasses with CdSe and CdSe+ZnSe are successfully synthesized. After heat treatment above the glass transition temperature, CdSe quantum dots with sizes 1.5–5.5 nm are formed. The luminescence spectra of CdSe quantum dots are analyzed at various temperatures, excitation energies and chemical composition of glass. The influence of selenium content on the growth features of quantum dots is shown. The size dependence of luminescence quantum yield on the QDs size is found. The 2.0–2.5 nm-sized QDs demonstrate trap emission in the region of 1.7–1.85 eV with a maximum quantum yield of 60 %. It is found that only a broad band due to the transition from the low state of the conduction band and the shallow donor trap states to the deep accepter trap levels is observed. This broad emission band is observed at any selenium cadmium ratio and zinc introduction.

KW - CdSe

KW - Fluorine-phosphate glass

KW - Luminescence

KW - Quantum dot

UR - https://www.mendeley.com/catalogue/89138e06-1c74-3621-93a5-270b76da3ed5/

U2 - 10.1016/j.jnoncrysol.2024.123248

DO - 10.1016/j.jnoncrysol.2024.123248

M3 - Article

VL - 646

JO - Journal of Non-Crystalline Solids

JF - Journal of Non-Crystalline Solids

SN - 0022-3093

M1 - 123248

ER -

ID: 125343879