Grain engineering for efficient near-infrared perovskite light-emitting diodes

Sung-Doo Baek; Wenhao Shao; Weijie Feng; Yuanhao Tang; Yoon Ho Lee; James Loy; William B Gunnarsson; Hanjun Yang; Yuchen Zhang; M Bilal Faheem; Poojan Indrajeet Kaswekar; Harindi R Atapattu; Jiajun Qin; Aidan H Coffey; Jee Yung Park; Seok Joo Yang; Yu-Ting Yang; Chenhui Zhu; Kang Wang; Kenneth R Graham; Feng Gao; Quinn Qiao; L Jay Guo; Barry P Rand; Letian Dou

doi:10.1038/s41467-024-55075-3

Grain engineering for efficient near-infrared perovskite light-emitting diodes

Nat Commun. 2024 Dec 30;15(1):10760. doi: 10.1038/s41467-024-55075-3.

Authors

Sung-Doo Baek^#¹, Wenhao Shao^#¹, Weijie Feng², Yuanhao Tang¹, Yoon Ho Lee¹, James Loy³, William B Gunnarsson⁴, Hanjun Yang^{1

5}, Yuchen Zhang⁶, M Bilal Faheem⁶, Poojan Indrajeet Kaswekar⁶, Harindi R Atapattu⁷, Jiajun Qin⁸, Aidan H Coffey⁹, Jee Yung Park^{1

10

11}, Seok Joo Yang¹, Yu-Ting Yang¹, Chenhui Zhu⁹, Kang Wang^{1

12}, Kenneth R Graham⁷, Feng Gao⁸, Quinn Qiao⁶, L Jay Guo^{2

13}, Barry P Rand^{4

14}, Letian Dou^{15

16

17}

Affiliations

¹ Davidson School of Chemical Engineering, Purdue University, West Lafayette, IN, USA.
² Macromolecular Science and Engineering, University of Michigan, Ann Arbor, MI, USA.
³ Department of Physics, Princeton University, Princeton, NJ, USA.
⁴ Department of Electrical and Computer Engineering, Princeton University, Princeton, NJ, USA.
⁵ Department of Chemistry, Purdue University, West Lafayette, IN, USA.
⁶ Department of Mechanical and Aerospace Engineering, Syracuse University, Syracuse, NY, USA.
⁷ Department of Chemistry, University of Kentucky, Lexington, KY, USA.
⁸ Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping, Sweden.
⁹ Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
¹⁰ Department of Chemical and Environmental Engineering, Yale University, New Haven, CT, USA.
¹¹ Energy Sciences Institute, Yale University, West Haven, CT, USA.
¹² Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China.
¹³ Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI, USA.
¹⁴ Andlinger Center for Energy and the Environment, Princeton University, Princeton, NJ, USA.
¹⁵ Davidson School of Chemical Engineering, Purdue University, West Lafayette, IN, USA. dou10@purdue.edu.
¹⁶ Department of Chemistry, Purdue University, West Lafayette, IN, USA. dou10@purdue.edu.
¹⁷ Birck Nanotechnology Center, Purdue University, West Lafayette, IN, USA. dou10@purdue.edu.

^# Contributed equally.

Abstract

Metal halide perovskites show promise for next-generation light-emitting diodes, particularly in the near-infrared range, where they outperform organic and quantum-dot counterparts. However, they still fall short of costly III-V semiconductor devices, which achieve external quantum efficiencies above 30% with high brightness. Among several factors, controlling grain growth and nanoscale morphology is crucial for further enhancing device performance. This study presents a grain engineering methodology that combines solvent engineering and heterostructure construction to improve light outcoupling efficiency and defect passivation. Solvent engineering enables precise control over grain size and distribution, increasing light outcoupling to ~40%. Constructing 2D/3D heterostructures with a conjugated cation reduces defect densities and accelerates radiative recombination. The resulting near-infrared perovskite light-emitting diodes achieve a peak external quantum efficiency of 31.4% and demonstrate a maximum brightness of 929 W sr^-1 m^-2. These findings indicate that perovskite light-emitting diodes have potential as cost-effective, high-performance near-infrared light sources for practical applications.

Abstract

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