High Green Purity and Narrow Emission Ceramic-Like Perovskite Nanocrystals Enabled by Solid-Phase Reaction Process

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High Green Purity and Narrow Emission Ceramic-Like Perovskite Nanocrystals Enabled by Solid-Phase Reaction Process. / Dong, Hongyuan ; Tian, Shuyu ; Sun, Xuejiao ; Mukhin, Ivan S. ; Islamova, Regina M. ; Li, Gang; Tian, Jianjun .

In: Advanced Optical Materials, Vol. 11, No. 17, 2300309, 04.09.2023.

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

BibTeX

@article{bdb753305a6d497583eefb9e2be44a38,

title = "High Green Purity and Narrow Emission Ceramic-Like Perovskite Nanocrystals Enabled by Solid-Phase Reaction Process",

abstract = "Here, ceramic-like CsPbBr3@SiO2 nanocrystals (NCs) with a high photoluminescence quantum yield of 98.7%, green purity of 90%, and narrow full width at half maximum of 22 nm are successfully achieved by a solid-phase reaction process. The SiO2 shell covers the surface of the NCs, providing long-term working and excellent thermal cycling stability. Ba2+ dopes the lattice of the perovskite structure under high-temperature sintering at 700 °C, resulting in the red-shift of the NCs emission due to the decrease of the bandgap caused by the lattice modulation with Ba2+. At the same time, the halogen vacancies are effectively passivated by a halogen-rich environment of dopants (BaBr2). The Commission Internationale de l'Eclairage of the doped ceramic-like NCs is (0.170, 0.760), which approaches the Rec.2020 standard. By means of this solid reaction process, red, green, and blue ceramic-like perovskite NCs are prepared to achieve white light-emitting diodes, covering 124% of the National Television Standards Committee.",

keywords = "ceramic-like nanocrystals, metal lead-halide perovskite nanocrystals, saturation of green emission, solid-phase reaction",

author = "Hongyuan Dong and Shuyu Tian and Xuejiao Sun and Mukhin, {Ivan S.} and Islamova, {Regina M.} and Gang Li and Jianjun Tian",

year = "2023",

month = sep,

day = "4",

doi = "10.1002/adom.202300309",

language = "English",

volume = "11",

journal = "Advanced Optical Materials",

issn = "2195-1071",

publisher = "Wiley-Blackwell",

number = "17",

}

RIS

TY - JOUR

T1 - High Green Purity and Narrow Emission Ceramic-Like Perovskite Nanocrystals Enabled by Solid-Phase Reaction Process

AU - Dong, Hongyuan

AU - Tian, Shuyu

AU - Sun, Xuejiao

AU - Mukhin, Ivan S.

AU - Islamova, Regina M.

AU - Li, Gang

AU - Tian, Jianjun

PY - 2023/9/4

Y1 - 2023/9/4

N2 - Here, ceramic-like CsPbBr3@SiO2 nanocrystals (NCs) with a high photoluminescence quantum yield of 98.7%, green purity of 90%, and narrow full width at half maximum of 22 nm are successfully achieved by a solid-phase reaction process. The SiO2 shell covers the surface of the NCs, providing long-term working and excellent thermal cycling stability. Ba2+ dopes the lattice of the perovskite structure under high-temperature sintering at 700 °C, resulting in the red-shift of the NCs emission due to the decrease of the bandgap caused by the lattice modulation with Ba2+. At the same time, the halogen vacancies are effectively passivated by a halogen-rich environment of dopants (BaBr2). The Commission Internationale de l'Eclairage of the doped ceramic-like NCs is (0.170, 0.760), which approaches the Rec.2020 standard. By means of this solid reaction process, red, green, and blue ceramic-like perovskite NCs are prepared to achieve white light-emitting diodes, covering 124% of the National Television Standards Committee.

AB - Here, ceramic-like CsPbBr3@SiO2 nanocrystals (NCs) with a high photoluminescence quantum yield of 98.7%, green purity of 90%, and narrow full width at half maximum of 22 nm are successfully achieved by a solid-phase reaction process. The SiO2 shell covers the surface of the NCs, providing long-term working and excellent thermal cycling stability. Ba2+ dopes the lattice of the perovskite structure under high-temperature sintering at 700 °C, resulting in the red-shift of the NCs emission due to the decrease of the bandgap caused by the lattice modulation with Ba2+. At the same time, the halogen vacancies are effectively passivated by a halogen-rich environment of dopants (BaBr2). The Commission Internationale de l'Eclairage of the doped ceramic-like NCs is (0.170, 0.760), which approaches the Rec.2020 standard. By means of this solid reaction process, red, green, and blue ceramic-like perovskite NCs are prepared to achieve white light-emitting diodes, covering 124% of the National Television Standards Committee.

KW - ceramic-like nanocrystals

KW - metal lead-halide perovskite nanocrystals

KW - saturation of green emission

KW - solid-phase reaction

UR - https://www.mendeley.com/catalogue/64cb3535-5742-3b33-865c-28fe9ed8a69b/

U2 - 10.1002/adom.202300309

DO - 10.1002/adom.202300309

M3 - Article

VL - 11

JO - Advanced Optical Materials

JF - Advanced Optical Materials

SN - 2195-1071

IS - 17

M1 - 2300309

ER -

ID: 106509771