Efficient and Spectrally Stable Blue Perovskite Light-Emitting Diodes Employing a Cationic π-Conjugated Polymer

Shuai Yuan; Lin-Song Cui; Linjie Dai; Yun Liu; Qing-Wei Liu; Yu-Qi Sun; Florian Auras; Miguel Anaya; Xiaopeng Zheng; Edoardo Ruggeri; You-Jun Yu; Yang-Kun Qu; Mojtaba Abdi-Jalebi; Osman Bakr; Zhao-Kui Wang; Samuel D. Stranks; Neil C. Greenham; Liang-Sheng Liao; Richard H. Friend

doi:10.1002/adma.202103640

Efficient and Spectrally Stable Blue Perovskite Light-Emitting Diodes Employing a Cationic π-Conjugated Polymer

Shuai Yuan, Lin-Song Cui, Linjie Dai, Yun Liu, Qing-Wei Liu, Yu-Qi Sun, Florian Auras, Miguel Anaya, Xiaopeng Zheng, Edoardo Ruggeri, You-Jun Yu, Yang-Kun Qu, Mojtaba Abdi-Jalebi, Osman Bakr, Zhao-Kui Wang, Samuel D. Stranks, Neil C. Greenham, Liang-Sheng Liao, Richard H. Friend

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

96 Scopus citations

Abstract

Metal halide perovskite semiconductors have demonstrated remarkable potentials in solution-processed blue light-emitting diodes (LEDs). However, the unsatisfied efficiency and spectral stability responsible for trap-mediated non-radiative losses and halide phase segregation remain the primary unsolved challenges for blue perovskite LEDs. In this study, it is reported that a fluorene-based π-conjugated cationic polymer can be blended with the perovskite semiconductor to control film formation and optoelectronic properties. As a result, sky-blue and true-blue perovskite LEDs with Commission Internationale de l'Eclairage coordinates of (0.08, 0.22) and (0.12, 0.13) at the record external quantum efficiencies of 11.2% and 8.0% were achieved. In addition, the mixed halide perovskites with the conjugated cationic polymer exhibit excellent spectral stability under external bias. This result illustrates that π-conjugated cationic polymers have a great potential to realize efficient blue mixed-halide perovskite LEDs with stable electroluminescence.

Original language	English (US)
Pages (from-to)	2103640
Journal	Advanced Materials
DOIs	https://doi.org/10.1002/adma.202103640
State	Published - Sep 24 2021

Bibliographical note

KAUST Repository Item: Exported on 2021-09-27
Acknowledgements: This work was supported by the 100 Talent Program of Chinese Academy of Sciences (grant no. KY2060000185) and the National Natural Science Foundation of China (NSFC) (grant no. 52103242). S.Y., Q.-W.L., Y.-J.Y., Y.-K.Q., Z.-K.W., and L.-S.L. acknowledge financial support from the Natural Science Foundation of China (nos. 91733301, 61674109, 11675252, 11605278) and the National Key R&D Program of China (no. 2016YFA0202400). L.-S.C. and R.H.F. acknowledge the Engineering and Physical Sciences Research Council (EPSRC) for funding (EP/M01083X/1, EP/M005143/1). Y.L. and R.H.F. acknowledge support from the Simons Foundation (grant 601946). The authors are grateful for computational support from the UK national high performance computing service, ARCHER, for which access was obtained via the UKCP consortium and funded by EPSRC grant ref. EP/P022561/1. L.-J.D. thanks the Cambridge Trust and China Scholarship Council (CSC) for financial support. M.A. acknowledges funding from the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement no. 841386. F.A. acknowledges funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement no. 670405). S.D.S. and E.R. acknowledge funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement no. 756962 [HYPERION]). This project was also funded by the Collaborative Innovation Center of Suzhou Nano Science and Technology, and by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), and by the “111” Project of The State Administration of Foreign Experts Affairs of China.

ASJC Scopus subject areas

Mechanics of Materials
General Materials Science
Mechanical Engineering

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https://repository.kaust.edu.sa/bitstream/10754/671931/1/adma.202103640.pdf

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Yuan, S., Cui, L.-S., Dai, L., Liu, Y., Liu, Q.-W., Sun, Y.-Q., Auras, F., Anaya, M., Zheng, X., Ruggeri, E., Yu, Y.-J., Qu, Y.-K., Abdi-Jalebi, M., Bakr, O., Wang, Z.-K., Stranks, S. D., Greenham, N. C., Liao, L.-S., & Friend, R. H. (2021). Efficient and Spectrally Stable Blue Perovskite Light-Emitting Diodes Employing a Cationic π-Conjugated Polymer. Advanced Materials, 2103640. https://doi.org/10.1002/adma.202103640

@article{17349e4520114facbe300bf9ce12e618,

title = "Efficient and Spectrally Stable Blue Perovskite Light-Emitting Diodes Employing a Cationic π-Conjugated Polymer",

abstract = "Metal halide perovskite semiconductors have demonstrated remarkable potentials in solution-processed blue light-emitting diodes (LEDs). However, the unsatisfied efficiency and spectral stability responsible for trap-mediated non-radiative losses and halide phase segregation remain the primary unsolved challenges for blue perovskite LEDs. In this study, it is reported that a fluorene-based π-conjugated cationic polymer can be blended with the perovskite semiconductor to control film formation and optoelectronic properties. As a result, sky-blue and true-blue perovskite LEDs with Commission Internationale de l'Eclairage coordinates of (0.08, 0.22) and (0.12, 0.13) at the record external quantum efficiencies of 11.2% and 8.0% were achieved. In addition, the mixed halide perovskites with the conjugated cationic polymer exhibit excellent spectral stability under external bias. This result illustrates that π-conjugated cationic polymers have a great potential to realize efficient blue mixed-halide perovskite LEDs with stable electroluminescence.",

author = "Shuai Yuan and Lin-Song Cui and Linjie Dai and Yun Liu and Qing-Wei Liu and Yu-Qi Sun and Florian Auras and Miguel Anaya and Xiaopeng Zheng and Edoardo Ruggeri and You-Jun Yu and Yang-Kun Qu and Mojtaba Abdi-Jalebi and Osman Bakr and Zhao-Kui Wang and Stranks, {Samuel D.} and Greenham, {Neil C.} and Liang-Sheng Liao and Friend, {Richard H.}",

note = "KAUST Repository Item: Exported on 2021-09-27 Acknowledgements: This work was supported by the 100 Talent Program of Chinese Academy of Sciences (grant no. KY2060000185) and the National Natural Science Foundation of China (NSFC) (grant no. 52103242). S.Y., Q.-W.L., Y.-J.Y., Y.-K.Q., Z.-K.W., and L.-S.L. acknowledge financial support from the Natural Science Foundation of China (nos. 91733301, 61674109, 11675252, 11605278) and the National Key R&D Program of China (no. 2016YFA0202400). L.-S.C. and R.H.F. acknowledge the Engineering and Physical Sciences Research Council (EPSRC) for funding (EP/M01083X/1, EP/M005143/1). Y.L. and R.H.F. acknowledge support from the Simons Foundation (grant 601946). The authors are grateful for computational support from the UK national high performance computing service, ARCHER, for which access was obtained via the UKCP consortium and funded by EPSRC grant ref. EP/P022561/1. L.-J.D. thanks the Cambridge Trust and China Scholarship Council (CSC) for financial support. M.A. acknowledges funding from the European Union's Horizon 2020 research and innovation programme under the Marie Sk{\l}odowska-Curie grant agreement no. 841386. F.A. acknowledges funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement no. 670405). S.D.S. and E.R. acknowledge funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement no. 756962 [HYPERION]). This project was also funded by the Collaborative Innovation Center of Suzhou Nano Science and Technology, and by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), and by the “111” Project of The State Administration of Foreign Experts Affairs of China.",

year = "2021",

month = sep,

day = "24",

doi = "10.1002/adma.202103640",

language = "English (US)",

pages = "2103640",

journal = "Advanced Materials",

issn = "0935-9648",

publisher = "Wiley",

}

Yuan, S, Cui, L-S, Dai, L, Liu, Y, Liu, Q-W, Sun, Y-Q, Auras, F, Anaya, M, Zheng, X, Ruggeri, E, Yu, Y-J, Qu, Y-K, Abdi-Jalebi, M, Bakr, O, Wang, Z-K, Stranks, SD, Greenham, NC, Liao, L-S & Friend, RH 2021, 'Efficient and Spectrally Stable Blue Perovskite Light-Emitting Diodes Employing a Cationic π-Conjugated Polymer', Advanced Materials, pp. 2103640. https://doi.org/10.1002/adma.202103640

TY - JOUR

T1 - Efficient and Spectrally Stable Blue Perovskite Light-Emitting Diodes Employing a Cationic π-Conjugated Polymer

AU - Yuan, Shuai

AU - Cui, Lin-Song

AU - Dai, Linjie

AU - Liu, Yun

AU - Liu, Qing-Wei

AU - Sun, Yu-Qi

AU - Auras, Florian

AU - Anaya, Miguel

AU - Zheng, Xiaopeng

AU - Ruggeri, Edoardo

AU - Yu, You-Jun

AU - Qu, Yang-Kun

AU - Abdi-Jalebi, Mojtaba

AU - Bakr, Osman

AU - Wang, Zhao-Kui

AU - Stranks, Samuel D.

AU - Greenham, Neil C.

AU - Liao, Liang-Sheng

AU - Friend, Richard H.

N1 - KAUST Repository Item: Exported on 2021-09-27 Acknowledgements: This work was supported by the 100 Talent Program of Chinese Academy of Sciences (grant no. KY2060000185) and the National Natural Science Foundation of China (NSFC) (grant no. 52103242). S.Y., Q.-W.L., Y.-J.Y., Y.-K.Q., Z.-K.W., and L.-S.L. acknowledge financial support from the Natural Science Foundation of China (nos. 91733301, 61674109, 11675252, 11605278) and the National Key R&D Program of China (no. 2016YFA0202400). L.-S.C. and R.H.F. acknowledge the Engineering and Physical Sciences Research Council (EPSRC) for funding (EP/M01083X/1, EP/M005143/1). Y.L. and R.H.F. acknowledge support from the Simons Foundation (grant 601946). The authors are grateful for computational support from the UK national high performance computing service, ARCHER, for which access was obtained via the UKCP consortium and funded by EPSRC grant ref. EP/P022561/1. L.-J.D. thanks the Cambridge Trust and China Scholarship Council (CSC) for financial support. M.A. acknowledges funding from the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement no. 841386. F.A. acknowledges funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement no. 670405). S.D.S. and E.R. acknowledge funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement no. 756962 [HYPERION]). This project was also funded by the Collaborative Innovation Center of Suzhou Nano Science and Technology, and by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), and by the “111” Project of The State Administration of Foreign Experts Affairs of China.

PY - 2021/9/24

Y1 - 2021/9/24

N2 - Metal halide perovskite semiconductors have demonstrated remarkable potentials in solution-processed blue light-emitting diodes (LEDs). However, the unsatisfied efficiency and spectral stability responsible for trap-mediated non-radiative losses and halide phase segregation remain the primary unsolved challenges for blue perovskite LEDs. In this study, it is reported that a fluorene-based π-conjugated cationic polymer can be blended with the perovskite semiconductor to control film formation and optoelectronic properties. As a result, sky-blue and true-blue perovskite LEDs with Commission Internationale de l'Eclairage coordinates of (0.08, 0.22) and (0.12, 0.13) at the record external quantum efficiencies of 11.2% and 8.0% were achieved. In addition, the mixed halide perovskites with the conjugated cationic polymer exhibit excellent spectral stability under external bias. This result illustrates that π-conjugated cationic polymers have a great potential to realize efficient blue mixed-halide perovskite LEDs with stable electroluminescence.

AB - Metal halide perovskite semiconductors have demonstrated remarkable potentials in solution-processed blue light-emitting diodes (LEDs). However, the unsatisfied efficiency and spectral stability responsible for trap-mediated non-radiative losses and halide phase segregation remain the primary unsolved challenges for blue perovskite LEDs. In this study, it is reported that a fluorene-based π-conjugated cationic polymer can be blended with the perovskite semiconductor to control film formation and optoelectronic properties. As a result, sky-blue and true-blue perovskite LEDs with Commission Internationale de l'Eclairage coordinates of (0.08, 0.22) and (0.12, 0.13) at the record external quantum efficiencies of 11.2% and 8.0% were achieved. In addition, the mixed halide perovskites with the conjugated cationic polymer exhibit excellent spectral stability under external bias. This result illustrates that π-conjugated cationic polymers have a great potential to realize efficient blue mixed-halide perovskite LEDs with stable electroluminescence.

UR - http://hdl.handle.net/10754/671931

UR - https://onlinelibrary.wiley.com/doi/10.1002/adma.202103640

U2 - 10.1002/adma.202103640

DO - 10.1002/adma.202103640

M3 - Article

C2 - 34558117

SN - 0935-9648

SP - 2103640

JO - Advanced Materials

JF - Advanced Materials

ER -

Efficient and Spectrally Stable Blue Perovskite Light-Emitting Diodes Employing a Cationic π-Conjugated Polymer

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