Opportunity of lead-free metal halide perovskites for electroluminescence
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GRAPHICAL ABSTRACT
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PUBLIC SUMMARY
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Lead-free metal halide perovskites (LFMHPs) are promising for electroluminescence.
Synthesis methods, crystal structure, optical properties of LFMHPs are introduced.
The research progress of LFMHP-based electroluminescent devices are discussed.
Key challenges and potential prospects of LFMHPs are proposed.
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ABSTRACT
Lead halide perovskites (LHPs), which have demonstrated exceptional optical and electrical properties are promising candidates for electroluminescent light-emitting diodes (LEDs). However, concerns about the toxicity and stability have hindered their commercialization. In recent years, lead-free metal halide perovskites (LFMHPs) have emerged as promising alternatives, and significant progress has already been made in developing LFMHP-based LEDs. Nevertheless, their device performance is still inferior to that of well-developed LHP-based counterparts. To fully exploit LED applications and boost device performance, in this review, we provide a comprehensive overview of the currently explored different metal-based LFMHPs. We mainly focus on the preparation methods, crystal structure, optical properties, and LED applications of these materials. Furthermore, we conclude with a discussion regarding the key challenges and potential prospects in this field. We hope that this review will inspire more extensive research on LFMHPs from a new perspective and promote practical applications of LFMHP-based LEDs in multiple directions of current and future research. -
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REFERENCES
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Wang Z., Zheng S., Teng Q., et al., (2023). Opportunity of lead-free metal halide perovskites for electroluminescence. The Innovation Materials 1(1), 100015. https://doi.org/10.59717/j.xinn-mater.2023.100015
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Wang Z., Zheng S., Teng Q., et al., (2023). Opportunity of lead-free metal halide perovskites for electroluminescence. The Innovation Materials 1(1), 100015. https://doi.org/10.59717/j.xinn-mater.2023.100015
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Figure 1.
Current status of perovskite light-emitting diodes (PeLEDs) based on lead-free metal halide perovskite (LFMHP) emitters.
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Figure 2.
Crystal structures and optical properties of 3D and 2D Sn-based LFMHPs.
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Figure 3.
Crystal structures and optical properties of 0D Sn-based LFMHPs.
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Figure 4.
Crystal structures and optical properties of Cn-based LFMHPs.
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Figure 5.
Crystal structures and optical properties of Mn-based and Sb-based LFMHPs.
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Figure 6.
Crystal structures and optical properties of other LFMHPs.
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Figure 7.
Electroluminescence (EL) performance of Sn-based PeLEDs.
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Figure 8.
EL performance of Cu-based PeLEDs.
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Figure 9.
EL performance of Mn-based and Sb-based PeLEDs.
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Figure 10.
EL performance of other PeLEDs.
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