Facile synthesis of thermally stable CsPbBr3 perovskite quantum dot-inorganic SiO2 composites and their application to white light-emitting diodes with wide color gamut

Da Hye Park; Joon Soo Han; Woong Kim; Ho Seong Jang

doi:10.1016/j.dyepig.2017.10.003

Facile synthesis of thermally stable CsPbBr₃ perovskite quantum dot-inorganic SiO₂ composites and their application to white light-emitting diodes with wide color gamut

Da Hye Park, Joon Soo Han, Woong Kim, Ho Seong Jang

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

101 Citations (Scopus)

Abstract

In this study, highly efficient green-to-red-emitting CsPbBr_3-zI_z perovskite quantum dots (PQDs) with high color purity are synthesized and a facile route for the formation of PQD-inorganic SiO₂ composites is proposed. To improve thermal and water stability of the PQDs, perhydropolysilazane (PHPS)-derived SiO₂ composites are prepared. The CsPbBr₃-SiO₂ composites exhibit highly enhanced thermal stability and water stability. The green-emitting CsPbBr₃-SiO₂ composites and red-emitting CsPbBr_1·2I_1.8 PQDs are coated on blue light-emitting diodes (LEDs) and the fabricated green and red LEDs show high color purities of 95.1 and 99.5%, respectively. Finally, the white LED is fabricated by combining a blue LED with CsPbBr₃-SiO₂ composites and CsPbBr_1·2I_1.8 PQDs. The fabricated white LED shows bright natural white light (luminous efficacy = 35.4 lmW⁻¹, correlated color temperature = 5623 K) with excellent color reproducibility due to wide color gamut (127% National Television System Committee color space).

Original language	English
Pages (from-to)	246-252
Number of pages	7
Journal	Dyes and Pigments
Volume	149
DOIs	https://doi.org/10.1016/j.dyepig.2017.10.003
Publication status	Published - 2018 Feb

Bibliographical note

Funding Information:
This research was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) ( NRF-2016R1A2B2013629 ) and Future Key Technology Program (project No. 2E26960 ) by Korea Institute of Science and Technology . We thank Dr. Gumin Kang for technical help for lifetime measurement.

Publisher Copyright:
© 2017 Elsevier Ltd

Keywords

Perhydropolysilazane
Perovskite quantum dots
Silica composites
White light-emitting diodes
Wide color gamut

ASJC Scopus subject areas

General Chemical Engineering
Process Chemistry and Technology

Access to Document

10.1016/j.dyepig.2017.10.003

Cite this

@article{bd98518ff6e74c30beedb94703050eac,

title = "Facile synthesis of thermally stable CsPbBr3 perovskite quantum dot-inorganic SiO2 composites and their application to white light-emitting diodes with wide color gamut",

abstract = "In this study, highly efficient green-to-red-emitting CsPbBr3-zIz perovskite quantum dots (PQDs) with high color purity are synthesized and a facile route for the formation of PQD-inorganic SiO2 composites is proposed. To improve thermal and water stability of the PQDs, perhydropolysilazane (PHPS)-derived SiO2 composites are prepared. The CsPbBr3-SiO2 composites exhibit highly enhanced thermal stability and water stability. The green-emitting CsPbBr3-SiO2 composites and red-emitting CsPbBr1·2I1.8 PQDs are coated on blue light-emitting diodes (LEDs) and the fabricated green and red LEDs show high color purities of 95.1 and 99.5%, respectively. Finally, the white LED is fabricated by combining a blue LED with CsPbBr3-SiO2 composites and CsPbBr1·2I1.8 PQDs. The fabricated white LED shows bright natural white light (luminous efficacy = 35.4 lmW−1, correlated color temperature = 5623 K) with excellent color reproducibility due to wide color gamut (127% National Television System Committee color space).",

keywords = "Perhydropolysilazane, Perovskite quantum dots, Silica composites, White light-emitting diodes, Wide color gamut",

author = "Park, {Da Hye} and Han, {Joon Soo} and Woong Kim and Jang, {Ho Seong}",

note = "Funding Information: This research was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) ( NRF-2016R1A2B2013629 ) and Future Key Technology Program (project No. 2E26960 ) by Korea Institute of Science and Technology . We thank Dr. Gumin Kang for technical help for lifetime measurement. Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2018",

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doi = "10.1016/j.dyepig.2017.10.003",

language = "English",

volume = "149",

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T1 - Facile synthesis of thermally stable CsPbBr3 perovskite quantum dot-inorganic SiO2 composites and their application to white light-emitting diodes with wide color gamut

AU - Park, Da Hye

AU - Han, Joon Soo

AU - Kim, Woong

AU - Jang, Ho Seong

N1 - Funding Information: This research was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) ( NRF-2016R1A2B2013629 ) and Future Key Technology Program (project No. 2E26960 ) by Korea Institute of Science and Technology . We thank Dr. Gumin Kang for technical help for lifetime measurement. Publisher Copyright: © 2017 Elsevier Ltd

PY - 2018/2

Y1 - 2018/2

N2 - In this study, highly efficient green-to-red-emitting CsPbBr3-zIz perovskite quantum dots (PQDs) with high color purity are synthesized and a facile route for the formation of PQD-inorganic SiO2 composites is proposed. To improve thermal and water stability of the PQDs, perhydropolysilazane (PHPS)-derived SiO2 composites are prepared. The CsPbBr3-SiO2 composites exhibit highly enhanced thermal stability and water stability. The green-emitting CsPbBr3-SiO2 composites and red-emitting CsPbBr1·2I1.8 PQDs are coated on blue light-emitting diodes (LEDs) and the fabricated green and red LEDs show high color purities of 95.1 and 99.5%, respectively. Finally, the white LED is fabricated by combining a blue LED with CsPbBr3-SiO2 composites and CsPbBr1·2I1.8 PQDs. The fabricated white LED shows bright natural white light (luminous efficacy = 35.4 lmW−1, correlated color temperature = 5623 K) with excellent color reproducibility due to wide color gamut (127% National Television System Committee color space).

AB - In this study, highly efficient green-to-red-emitting CsPbBr3-zIz perovskite quantum dots (PQDs) with high color purity are synthesized and a facile route for the formation of PQD-inorganic SiO2 composites is proposed. To improve thermal and water stability of the PQDs, perhydropolysilazane (PHPS)-derived SiO2 composites are prepared. The CsPbBr3-SiO2 composites exhibit highly enhanced thermal stability and water stability. The green-emitting CsPbBr3-SiO2 composites and red-emitting CsPbBr1·2I1.8 PQDs are coated on blue light-emitting diodes (LEDs) and the fabricated green and red LEDs show high color purities of 95.1 and 99.5%, respectively. Finally, the white LED is fabricated by combining a blue LED with CsPbBr3-SiO2 composites and CsPbBr1·2I1.8 PQDs. The fabricated white LED shows bright natural white light (luminous efficacy = 35.4 lmW−1, correlated color temperature = 5623 K) with excellent color reproducibility due to wide color gamut (127% National Television System Committee color space).

KW - Perhydropolysilazane

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KW - Silica composites

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