Bidentate Ligand-Passivated CsPbI                         3                          Perovskite Nanocrystals for Stable Near-Unity Photoluminescence Quantum Yield and Efficient Red Light-Emitting Diodes

Jun Pan; Yuequn Shang; Jun Yin; Michele De Bastiani; Wei Peng; Ibrahim Dursun; Lutfan Sinatra; Ahmed M. El-Zohry; Mohamed N. Hedhili; Abdul Hamid Emwas; Omar F. Mohammed; Zhijun Ning; Osman M. Bakr

doi:10.1021/jacs.7b10647

Bidentate Ligand-Passivated CsPbI ₃ Perovskite Nanocrystals for Stable Near-Unity Photoluminescence Quantum Yield and Efficient Red Light-Emitting Diodes

Jun Pan, Yuequn Shang, Jun Yin, Michele De Bastiani, Wei Peng, Ibrahim Dursun, Lutfan Sinatra, Ahmed M. El-Zohry, Mohamed N. Hedhili, Abdul Hamid Emwas, Omar F. Mohammed, Zhijun Ning^*, Osman M. Bakr

^*Corresponding author for this work

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

804 Scopus citations

Abstract

Although halide perovskite nanocrystals (NCs) are promising materials for optoelectronic devices, they suffer severely from chemical and phase instabilities. Moreover, the common capping ligands like oleic acid and oleylamine that encapsulate the NCs will form an insulating layer, precluding their utility in optoelectronic devices. To overcome these limitations, we develop a postsynthesis passivation process for CsPbI ₃ NCs by using a bidentate ligand, namely 2,2′-iminodibenzoic acid. Our passivated NCs exhibit narrow red photoluminescence with exceptional quantum yield (close to unity) and substantially improved stability. The passivated NCs enabled us to realize red light-emitting diodes (LEDs) with 5.02% external quantum efficiency and 748 cd/m ² luminance, surpassing by far LEDs made from the nonpassivated NCs.

Original language	English (US)
Pages (from-to)	562-565
Number of pages	4
Journal	Journal of the American Chemical Society
Volume	140
Issue number	2
DOIs	https://doi.org/10.1021/jacs.7b10647
State	Published - Jan 17 2018

Bibliographical note

Publisher Copyright:
© 2017 American Chemical Society.

ASJC Scopus subject areas

Catalysis
General Chemistry
Biochemistry
Colloid and Surface Chemistry

Access to Document

10.1021/jacs.7b10647

Cite this

Pan, J., Shang, Y., Yin, J., De Bastiani, M., Peng, W., Dursun, I., Sinatra, L., El-Zohry, A. M., Hedhili, M. N., Emwas, A. H., Mohammed, O. F., Ning, Z., & Bakr, O. M. (2018). Bidentate Ligand-Passivated CsPbI ₃ Perovskite Nanocrystals for Stable Near-Unity Photoluminescence Quantum Yield and Efficient Red Light-Emitting Diodes Journal of the American Chemical Society, 140(2), 562-565. https://doi.org/10.1021/jacs.7b10647

Pan, Jun ; Shang, Yuequn ; Yin, Jun et al. / Bidentate Ligand-Passivated CsPbI ₃ Perovskite Nanocrystals for Stable Near-Unity Photoluminescence Quantum Yield and Efficient Red Light-Emitting Diodes In: Journal of the American Chemical Society. 2018 ; Vol. 140, No. 2. pp. 562-565.

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title = " Bidentate Ligand-Passivated CsPbI 3 Perovskite Nanocrystals for Stable Near-Unity Photoluminescence Quantum Yield and Efficient Red Light-Emitting Diodes ",

abstract = " Although halide perovskite nanocrystals (NCs) are promising materials for optoelectronic devices, they suffer severely from chemical and phase instabilities. Moreover, the common capping ligands like oleic acid and oleylamine that encapsulate the NCs will form an insulating layer, precluding their utility in optoelectronic devices. To overcome these limitations, we develop a postsynthesis passivation process for CsPbI 3 NCs by using a bidentate ligand, namely 2,2′-iminodibenzoic acid. Our passivated NCs exhibit narrow red photoluminescence with exceptional quantum yield (close to unity) and substantially improved stability. The passivated NCs enabled us to realize red light-emitting diodes (LEDs) with 5.02% external quantum efficiency and 748 cd/m 2 luminance, surpassing by far LEDs made from the nonpassivated NCs.",

author = "Jun Pan and Yuequn Shang and Jun Yin and {De Bastiani}, Michele and Wei Peng and Ibrahim Dursun and Lutfan Sinatra and El-Zohry, {Ahmed M.} and Hedhili, {Mohamed N.} and Emwas, {Abdul Hamid} and Mohammed, {Omar F.} and Zhijun Ning and Bakr, {Osman M.}",

note = "Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",

year = "2018",

month = jan,

day = "17",

doi = "10.1021/jacs.7b10647",

language = "English (US)",

volume = "140",

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Pan, J, Shang, Y, Yin, J, De Bastiani, M, Peng, W, Dursun, I, Sinatra, L, El-Zohry, AM, Hedhili, MN , Emwas, AH , Mohammed, OF, Ning, Z & Bakr, OM 2018, ' Bidentate Ligand-Passivated CsPbI ₃ Perovskite Nanocrystals for Stable Near-Unity Photoluminescence Quantum Yield and Efficient Red Light-Emitting Diodes ', Journal of the American Chemical Society, vol. 140, no. 2, pp. 562-565. https://doi.org/10.1021/jacs.7b10647

Bidentate Ligand-Passivated CsPbI ₃ Perovskite Nanocrystals for Stable Near-Unity Photoluminescence Quantum Yield and Efficient Red Light-Emitting Diodes . / Pan, Jun; Shang, Yuequn; Yin, Jun et al.
In: Journal of the American Chemical Society, Vol. 140, No. 2, 17.01.2018, p. 562-565.

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

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T1 - Bidentate Ligand-Passivated CsPbI 3 Perovskite Nanocrystals for Stable Near-Unity Photoluminescence Quantum Yield and Efficient Red Light-Emitting Diodes

AU - Pan, Jun

AU - Shang, Yuequn

AU - Yin, Jun

AU - De Bastiani, Michele

AU - Peng, Wei

AU - Dursun, Ibrahim

AU - Sinatra, Lutfan

AU - El-Zohry, Ahmed M.

AU - Hedhili, Mohamed N.

AU - Emwas, Abdul Hamid

AU - Mohammed, Omar F.

AU - Ning, Zhijun

AU - Bakr, Osman M.

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AB - Although halide perovskite nanocrystals (NCs) are promising materials for optoelectronic devices, they suffer severely from chemical and phase instabilities. Moreover, the common capping ligands like oleic acid and oleylamine that encapsulate the NCs will form an insulating layer, precluding their utility in optoelectronic devices. To overcome these limitations, we develop a postsynthesis passivation process for CsPbI 3 NCs by using a bidentate ligand, namely 2,2′-iminodibenzoic acid. Our passivated NCs exhibit narrow red photoluminescence with exceptional quantum yield (close to unity) and substantially improved stability. The passivated NCs enabled us to realize red light-emitting diodes (LEDs) with 5.02% external quantum efficiency and 748 cd/m 2 luminance, surpassing by far LEDs made from the nonpassivated NCs.

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Pan J, Shang Y, Yin J, De Bastiani M, Peng W, Dursun I et al. Bidentate Ligand-Passivated CsPbI ₃ Perovskite Nanocrystals for Stable Near-Unity Photoluminescence Quantum Yield and Efficient Red Light-Emitting Diodes Journal of the American Chemical Society. 2018 Jan 17;140(2):562-565. doi: 10.1021/jacs.7b10647