Simultaneous enhancement of luminescence and stability of CsPbBr3 perovskite nanocrystals via formation of perhydropolysilazane-derived nanopatterned film

Shulgi Park; Junhee Cho; Dawoon Jeong; Jiyeon Jo; Minwoo Nam; Hanju Rhee; Joon Soo Han; Yong Jae Cho; Byeong Kwon Ju; Doo Hyun Ko; Ho Seong Jang

doi:10.1016/j.cej.2020.124767

Simultaneous enhancement of luminescence and stability of CsPbBr₃ perovskite nanocrystals via formation of perhydropolysilazane-derived nanopatterned film

Shulgi Park, Junhee Cho, Dawoon Jeong, Jiyeon Jo, Minwoo Nam, Hanju Rhee, Joon Soo Han, Yong Jae Cho, Byeong Kwon Ju, Doo Hyun Ko, Ho Seong Jang

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

18 Citations (Scopus)

Abstract

In this paper, we report the creation of robust and bright visible light-emitting perhydropolysilazane (PHPS)-derived nanopatterned CsPbBr₃ perovskite nanocrystal (PNC)-SiO₂ films. The CsPbBr₃-SiO₂ films exhibit improved stability against heat exhibiting 35.4% of the initial photoluminescence (PL) intensity after 160 °C heat-treatment and improved stability against water showing 92.6% of the initial PL intensity even after 30 days’ water immersion. In addition, the introduction of nanocylinder and nanocone patterns to the PHPS-derived CsPbBr₃-SiO₂ film resulted in 3.71 and 4.62-fold PL enhancement compared with the planar counterpart. The time resolved PL analysis and finite-difference time domain calculations indicate that the improvement of optical performance of the nanopatterned CsPbBr₃-SiO₂ films could be attributed to the enhanced absorption and emission via Mie resonance excitation. When the nanopatterned CsPbBr₃-SiO₂ film was combined with a blue light-emitting diode (LED), some of the blue light from the LED was converted into green light with high light conversion efficiency (72.3%). Along with the improved stability, the enhanced luminescence of the nanopatterned CsPbBr₃-SiO₂ films further extends their applicability for use in display devices with wide color gamut.

Original language	English
Article number	124767
Journal	Chemical Engineering Journal
Volume	393
DOIs	https://doi.org/10.1016/j.cej.2020.124767
Publication status	Published - 2020 Aug 1

Bibliographical note

Funding Information:
This research was supported by a National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) ( NRF-2018R1A2B5A03023239 , NRF-2020R1A2C2005844 ) and by the Future Key Technology Program (project No. 2E29250) by the Korea Institute of Science and Technology.

Publisher Copyright:
© 2020

Keywords

Nanopattern
Perhydropolysilazane
Perovskite nanocrystal film
Perovskite nanocrystals

ASJC Scopus subject areas

General Chemistry
Environmental Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

Access to Document

10.1016/j.cej.2020.124767

Cite this

Park, S., Cho, J., Jeong, D., Jo, J., Nam, M., Rhee, H., Han, J. S., Cho, Y. J., Ju, B. K., Ko, D. H., & Jang, H. S. (2020). Simultaneous enhancement of luminescence and stability of CsPbBr₃ perovskite nanocrystals via formation of perhydropolysilazane-derived nanopatterned film. Chemical Engineering Journal, 393, Article 124767. https://doi.org/10.1016/j.cej.2020.124767

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title = "Simultaneous enhancement of luminescence and stability of CsPbBr3 perovskite nanocrystals via formation of perhydropolysilazane-derived nanopatterned film",

abstract = "In this paper, we report the creation of robust and bright visible light-emitting perhydropolysilazane (PHPS)-derived nanopatterned CsPbBr3 perovskite nanocrystal (PNC)-SiO2 films. The CsPbBr3-SiO2 films exhibit improved stability against heat exhibiting 35.4% of the initial photoluminescence (PL) intensity after 160 °C heat-treatment and improved stability against water showing 92.6% of the initial PL intensity even after 30 days{\textquoteright} water immersion. In addition, the introduction of nanocylinder and nanocone patterns to the PHPS-derived CsPbBr3-SiO2 film resulted in 3.71 and 4.62-fold PL enhancement compared with the planar counterpart. The time resolved PL analysis and finite-difference time domain calculations indicate that the improvement of optical performance of the nanopatterned CsPbBr3-SiO2 films could be attributed to the enhanced absorption and emission via Mie resonance excitation. When the nanopatterned CsPbBr3-SiO2 film was combined with a blue light-emitting diode (LED), some of the blue light from the LED was converted into green light with high light conversion efficiency (72.3%). Along with the improved stability, the enhanced luminescence of the nanopatterned CsPbBr3-SiO2 films further extends their applicability for use in display devices with wide color gamut.",

keywords = "Nanopattern, Perhydropolysilazane, Perovskite nanocrystal film, Perovskite nanocrystals",

author = "Shulgi Park and Junhee Cho and Dawoon Jeong and Jiyeon Jo and Minwoo Nam and Hanju Rhee and Han, {Joon Soo} and Cho, {Yong Jae} and Ju, {Byeong Kwon} and Ko, {Doo Hyun} and Jang, {Ho Seong}",

note = "Funding Information: This research was supported by a National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) ( NRF-2018R1A2B5A03023239 , NRF-2020R1A2C2005844 ) and by the Future Key Technology Program (project No. 2E29250) by the Korea Institute of Science and Technology. Publisher Copyright: {\textcopyright} 2020",

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month = aug,

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doi = "10.1016/j.cej.2020.124767",

language = "English",

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T1 - Simultaneous enhancement of luminescence and stability of CsPbBr3 perovskite nanocrystals via formation of perhydropolysilazane-derived nanopatterned film

AU - Park, Shulgi

AU - Cho, Junhee

AU - Jeong, Dawoon

AU - Jo, Jiyeon

AU - Nam, Minwoo

AU - Rhee, Hanju

AU - Han, Joon Soo

AU - Cho, Yong Jae

AU - Ju, Byeong Kwon

AU - Ko, Doo Hyun

AU - Jang, Ho Seong

N1 - Funding Information: This research was supported by a National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) ( NRF-2018R1A2B5A03023239 , NRF-2020R1A2C2005844 ) and by the Future Key Technology Program (project No. 2E29250) by the Korea Institute of Science and Technology. Publisher Copyright: © 2020

PY - 2020/8/1

Y1 - 2020/8/1

N2 - In this paper, we report the creation of robust and bright visible light-emitting perhydropolysilazane (PHPS)-derived nanopatterned CsPbBr3 perovskite nanocrystal (PNC)-SiO2 films. The CsPbBr3-SiO2 films exhibit improved stability against heat exhibiting 35.4% of the initial photoluminescence (PL) intensity after 160 °C heat-treatment and improved stability against water showing 92.6% of the initial PL intensity even after 30 days’ water immersion. In addition, the introduction of nanocylinder and nanocone patterns to the PHPS-derived CsPbBr3-SiO2 film resulted in 3.71 and 4.62-fold PL enhancement compared with the planar counterpart. The time resolved PL analysis and finite-difference time domain calculations indicate that the improvement of optical performance of the nanopatterned CsPbBr3-SiO2 films could be attributed to the enhanced absorption and emission via Mie resonance excitation. When the nanopatterned CsPbBr3-SiO2 film was combined with a blue light-emitting diode (LED), some of the blue light from the LED was converted into green light with high light conversion efficiency (72.3%). Along with the improved stability, the enhanced luminescence of the nanopatterned CsPbBr3-SiO2 films further extends their applicability for use in display devices with wide color gamut.

AB - In this paper, we report the creation of robust and bright visible light-emitting perhydropolysilazane (PHPS)-derived nanopatterned CsPbBr3 perovskite nanocrystal (PNC)-SiO2 films. The CsPbBr3-SiO2 films exhibit improved stability against heat exhibiting 35.4% of the initial photoluminescence (PL) intensity after 160 °C heat-treatment and improved stability against water showing 92.6% of the initial PL intensity even after 30 days’ water immersion. In addition, the introduction of nanocylinder and nanocone patterns to the PHPS-derived CsPbBr3-SiO2 film resulted in 3.71 and 4.62-fold PL enhancement compared with the planar counterpart. The time resolved PL analysis and finite-difference time domain calculations indicate that the improvement of optical performance of the nanopatterned CsPbBr3-SiO2 films could be attributed to the enhanced absorption and emission via Mie resonance excitation. When the nanopatterned CsPbBr3-SiO2 film was combined with a blue light-emitting diode (LED), some of the blue light from the LED was converted into green light with high light conversion efficiency (72.3%). Along with the improved stability, the enhanced luminescence of the nanopatterned CsPbBr3-SiO2 films further extends their applicability for use in display devices with wide color gamut.

KW - Nanopattern

KW - Perhydropolysilazane

KW - Perovskite nanocrystal film

KW - Perovskite nanocrystals

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