Development of Mixed-Cation CsxRb1–                         xPbX3 Perovskite Quantum Dots and Their Full-Color Film with High Stability and Wide Color Gamut

Seungmin Baek; Sunghoon Kim; Jae Young Noh; Jin Hyuck Heo; Sang Hyuk Im; Ki Ha Hong; Sang Wook Kim

doi:10.1002/adom.201800295

Development of Mixed-Cation Cs_xRb_1– _xPbX₃ Perovskite Quantum Dots and Their Full-Color Film with High Stability and Wide Color Gamut

Seungmin Baek, Sunghoon Kim, Jae Young Noh, Jin Hyuck Heo, Sang Hyuk Im, Ki Ha Hong, Sang Wook Kim

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

38 Citations (Scopus)

Abstract

Mixed-cation Cs_xRb_1– _xPbX₃ (X = Cl, Br, I) perovskite quantum dots (PeQDs) are developed and show high quantum yields of 93% and 86% for green and blue wavelengths, respectively. The stability is significantly improved under heat, UV, and water aging conditions. These improved properties are explained by the increased defect formation resistance and exciton binding energy with Rb incorporation. Perovskite films are fabricated using Cs_xRb_1– _xPbX₃ PeQDs and cyclic olefin copolymer. The films have a wide color gamut covering up to 104.15% of the BT.2020-defined color space, with the white light color coordinates of (0.33, 0.32), luminance of 68.86 Cd m⁻², and correlated color temperature of 5299 K at 20 mA.

Original language	English
Article number	1800295
Journal	Advanced Optical Materials
Volume	6
Issue number	15
DOIs	https://doi.org/10.1002/adom.201800295
Publication status	Published - 2018 Aug 6

Keywords

CsRb PbX, perovskite quantum dots
QD films, cyclic olefin copolymer
improved stability
white light-emitting diodes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics

Access to Document

10.1002/adom.201800295

Cite this

@article{9853587f252d4f98bddaac63117c93fe,

title = "Development of Mixed-Cation CsxRb1– xPbX3 Perovskite Quantum Dots and Their Full-Color Film with High Stability and Wide Color Gamut",

abstract = "Mixed-cation CsxRb1– xPbX3 (X = Cl, Br, I) perovskite quantum dots (PeQDs) are developed and show high quantum yields of 93% and 86% for green and blue wavelengths, respectively. The stability is significantly improved under heat, UV, and water aging conditions. These improved properties are explained by the increased defect formation resistance and exciton binding energy with Rb incorporation. Perovskite films are fabricated using CsxRb1– xPbX3 PeQDs and cyclic olefin copolymer. The films have a wide color gamut covering up to 104.15% of the BT.2020-defined color space, with the white light color coordinates of (0.33, 0.32), luminance of 68.86 Cd m−2, and correlated color temperature of 5299 K at 20 mA.",

keywords = "CsRb PbX, perovskite quantum dots, QD films, cyclic olefin copolymer, improved stability, white light-emitting diodes",

author = "Seungmin Baek and Sunghoon Kim and Noh, {Jae Young} and Heo, {Jin Hyuck} and Im, {Sang Hyuk} and Hong, {Ki Ha} and Kim, {Sang Wook}",

note = "Funding Information: S.B. and S.K. contributed equally to this work. This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (No. 2014R1A5A1009799) and Nano-Material Technology Development Program (No. 2017M3A7B4041696), Republic of Korea. Publisher Copyright: {\textcopyright} 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

year = "2018",

month = aug,

day = "6",

doi = "10.1002/adom.201800295",

language = "English",

volume = "6",

journal = "Advanced Optical Materials",

issn = "2195-1071",

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AU - Baek, Seungmin

AU - Kim, Sunghoon

AU - Noh, Jae Young

AU - Heo, Jin Hyuck

AU - Im, Sang Hyuk

AU - Hong, Ki Ha

AU - Kim, Sang Wook

N1 - Funding Information: S.B. and S.K. contributed equally to this work. This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (No. 2014R1A5A1009799) and Nano-Material Technology Development Program (No. 2017M3A7B4041696), Republic of Korea. Publisher Copyright: © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

PY - 2018/8/6

Y1 - 2018/8/6

N2 - Mixed-cation CsxRb1– xPbX3 (X = Cl, Br, I) perovskite quantum dots (PeQDs) are developed and show high quantum yields of 93% and 86% for green and blue wavelengths, respectively. The stability is significantly improved under heat, UV, and water aging conditions. These improved properties are explained by the increased defect formation resistance and exciton binding energy with Rb incorporation. Perovskite films are fabricated using CsxRb1– xPbX3 PeQDs and cyclic olefin copolymer. The films have a wide color gamut covering up to 104.15% of the BT.2020-defined color space, with the white light color coordinates of (0.33, 0.32), luminance of 68.86 Cd m−2, and correlated color temperature of 5299 K at 20 mA.

AB - Mixed-cation CsxRb1– xPbX3 (X = Cl, Br, I) perovskite quantum dots (PeQDs) are developed and show high quantum yields of 93% and 86% for green and blue wavelengths, respectively. The stability is significantly improved under heat, UV, and water aging conditions. These improved properties are explained by the increased defect formation resistance and exciton binding energy with Rb incorporation. Perovskite films are fabricated using CsxRb1– xPbX3 PeQDs and cyclic olefin copolymer. The films have a wide color gamut covering up to 104.15% of the BT.2020-defined color space, with the white light color coordinates of (0.33, 0.32), luminance of 68.86 Cd m−2, and correlated color temperature of 5299 K at 20 mA.

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