Self-assembled hierarchical nanostructured perovskites enable highly efficient LEDs: Via an energy cascade

Xin Yu Chin; Ajay Perumal; Annalisa Bruno; Natalia Yantara; Sjoerd A. Veldhuis; Laura Martínez-Sarti; Bevita Chandran; Vladimir Chirvony; Alencious Shu Zee Lo; Jinkyu So; Cesare Soci; Michael Grätzel; Henk J. Bolink; Nripan Mathews; Subodh G. Mhaisalkar

doi:10.1039/c8ee00293b

Self-assembled hierarchical nanostructured perovskites enable highly efficient LEDs: Via an energy cascade

Xin Yu Chin, Ajay Perumal, Annalisa Bruno, Natalia Yantara, Sjoerd A. Veldhuis, Laura Martínez-Sarti, Bevita Chandran, Vladimir Chirvony, Alencious Shu Zee Lo, Jinkyu So, Cesare Soci, Michael Grätzel, Henk J. Bolink, Nripan Mathews^*, Subodh G. Mhaisalkar

^*Corresponding author for this work

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

141 Citations (Scopus)

Abstract

Metal halide perovskites have established themselves as extraordinary optoelectronic materials, exhibiting promise for applications in large area illumination and displays. However, low luminescence, low efficiencies of the light-emitting diodes (LEDs), and complex preparation methods currently limit further progress towards applications. Here, we report on a new and unique mesoscopic film architecture featuring the self-assembly of 3D formamidinium lead bromide (FAPbBr₃) nanocrystals of graded size, coupled with microplatelets of octylammonium lead bromide perovskites, which enables an energy cascade, yielding very high-performance light-emitting diodes with emission in the green spectral region. These hierarchically structured perovskite films exhibit photoluminescence quantum yields of over 80% and LEDs associated with record high efficiencies in excess of 57.6 cd A^-1 with an external quantum efficiency above 13%. Additionally, due to low turn-on voltages (∼2.2 V) the LEDs have power efficiencies exceeding 58 lumens per watt, obtained without any light-outcoupling structures.

Original language	English
Pages (from-to)	1770-1778
Number of pages	9
Journal	Energy and Environmental Science
Volume	11
Issue number	7
DOIs	https://doi.org/10.1039/c8ee00293b
Publication status	Published - Jul 2018
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2018 The Royal Society of Chemistry.

ASJC Scopus Subject Areas

Environmental Chemistry
Renewable Energy, Sustainability and the Environment
Nuclear Energy and Engineering
Pollution

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1039/c8ee00293b

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Chin, X. Y., Perumal, A., Bruno, A., Yantara, N., Veldhuis, S. A., Martínez-Sarti, L., Chandran, B., Chirvony, V., Lo, A. S. Z., So, J., Soci, C., Grätzel, M., Bolink, H. J., Mathews, N., & Mhaisalkar, S. G. (2018). Self-assembled hierarchical nanostructured perovskites enable highly efficient LEDs: Via an energy cascade. Energy and Environmental Science, 11(7), 1770-1778. https://doi.org/10.1039/c8ee00293b

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abstract = "Metal halide perovskites have established themselves as extraordinary optoelectronic materials, exhibiting promise for applications in large area illumination and displays. However, low luminescence, low efficiencies of the light-emitting diodes (LEDs), and complex preparation methods currently limit further progress towards applications. Here, we report on a new and unique mesoscopic film architecture featuring the self-assembly of 3D formamidinium lead bromide (FAPbBr3) nanocrystals of graded size, coupled with microplatelets of octylammonium lead bromide perovskites, which enables an energy cascade, yielding very high-performance light-emitting diodes with emission in the green spectral region. These hierarchically structured perovskite films exhibit photoluminescence quantum yields of over 80% and LEDs associated with record high efficiencies in excess of 57.6 cd A-1 with an external quantum efficiency above 13%. Additionally, due to low turn-on voltages (∼2.2 V) the LEDs have power efficiencies exceeding 58 lumens per watt, obtained without any light-outcoupling structures.",

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Chin, XY, Perumal, A, Bruno, A, Yantara, N, Veldhuis, SA, Martínez-Sarti, L, Chandran, B, Chirvony, V, Lo, ASZ, So, J, Soci, C, Grätzel, M, Bolink, HJ, Mathews, N & Mhaisalkar, SG 2018, 'Self-assembled hierarchical nanostructured perovskites enable highly efficient LEDs: Via an energy cascade', Energy and Environmental Science, vol. 11, no. 7, pp. 1770-1778. https://doi.org/10.1039/c8ee00293b

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AU - Chin, Xin Yu

AU - Perumal, Ajay

AU - Bruno, Annalisa

AU - Yantara, Natalia

AU - Veldhuis, Sjoerd A.

AU - Martínez-Sarti, Laura

AU - Chandran, Bevita

AU - Chirvony, Vladimir

AU - Lo, Alencious Shu Zee

AU - So, Jinkyu

AU - Soci, Cesare

AU - Grätzel, Michael

AU - Bolink, Henk J.

AU - Mathews, Nripan

AU - Mhaisalkar, Subodh G.

PY - 2018/7

Y1 - 2018/7

N2 - Metal halide perovskites have established themselves as extraordinary optoelectronic materials, exhibiting promise for applications in large area illumination and displays. However, low luminescence, low efficiencies of the light-emitting diodes (LEDs), and complex preparation methods currently limit further progress towards applications. Here, we report on a new and unique mesoscopic film architecture featuring the self-assembly of 3D formamidinium lead bromide (FAPbBr3) nanocrystals of graded size, coupled with microplatelets of octylammonium lead bromide perovskites, which enables an energy cascade, yielding very high-performance light-emitting diodes with emission in the green spectral region. These hierarchically structured perovskite films exhibit photoluminescence quantum yields of over 80% and LEDs associated with record high efficiencies in excess of 57.6 cd A-1 with an external quantum efficiency above 13%. Additionally, due to low turn-on voltages (∼2.2 V) the LEDs have power efficiencies exceeding 58 lumens per watt, obtained without any light-outcoupling structures.

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Self-assembled hierarchical nanostructured perovskites enable highly efficient LEDs: Via an energy cascade

Abstract

Bibliographical note

ASJC Scopus Subject Areas

UN SDGs

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