Near‐Unity PLQY of Cs₃Cu₂X₅ (X = Cl, Br) for High‐Efficiency White Light‐Emitting Diodes with Exceptional Color Quality Article Swipe
Yanmei Chen
,
Hongyang Zhu
,
Dallar Babaian
,
Christopher Dzorkpata
,
Alexei Grigoriev
,
Zhongwu Wang
,
Stephen Wheat
,
S. Guha
,
Peifen Zhu
·
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.1002/adma.202500083
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.1002/adma.202500083
Metal halide perovskites and their derivatives have emerged as highly promising materials for next‐generation optoelectronic devices, owing to their intrinsic defect tolerance and exceptional electrical and optical properties. Among these, lead‐free copper(I)‐based halide perovskite derivatives, Cs₃Cu₂X₅ (X = Cl, Br, I) (CHPs), have garnered significant attention as environmentally friendly and stable alternatives to lead‐based perovskites. In this study, a cost‐effective and sustainable synthesis route for Cs₃Cu₂Cl₅ and Cs₃Cu₂Br₅ powders is developed, which exhibit strong green (≈526 nm) and blue (≈458 nm) emissions, and achieve remarkable photoluminescence quantum yields (PLQYs) of 100% and 92%, respectively. Cs₃Cu₂X₅ (X = Cl, Br) powders are incorporated into 3D‐printed structures, exhibiting excellent transparency and color stability. Furthermore, white LEDs are fabricated by using the green‐emitting Cs₃Cu₂Cl₅ and blue‐emitting Cs₃Cu₂Br₅ and a yellow‐emitting double perovskite (PLQY≈ 73%), resulting in devices with an exceptionally high color rendering index (CRI) of up to 98 and tunable correlated color temperatures (CCTs) ranging from 3864 to 9677 K, closely mimicking natural white light. Beyond solid‐state lighting, the superior optical performance and stability of Cs₃Cu₂X₅ (X = Cl, Br) powders open new avenues for their application in photovoltaics and other optoelectronic devices.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1002/adma.202500083
- https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/adma.202500083
- OA Status
- bronze
- Cited By
- 32
- References
- 60
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4409118768
All OpenAlex metadata
Raw OpenAlex JSON
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https://openalex.org/W4409118768Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1002/adma.202500083Digital Object Identifier
- Title
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Near‐Unity PLQY of Cs₃Cu₂X₅ (X = Cl, Br) for High‐Efficiency White Light‐Emitting Diodes with Exceptional Color QualityWork title
- Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2025Year of publication
- Publication date
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2025-04-02Full publication date if available
- Authors
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Yanmei Chen, Hongyang Zhu, Dallar Babaian, Christopher Dzorkpata, Alexei Grigoriev, Zhongwu Wang, Stephen Wheat, S. Guha, Peifen ZhuList of authors in order
- Landing page
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https://doi.org/10.1002/adma.202500083Publisher landing page
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https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/adma.202500083Direct link to full text PDF
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YesWhether a free full text is available
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bronzeOpen access status per OpenAlex
- OA URL
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https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/adma.202500083Direct OA link when available
- Concepts
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Materials science, Halide, Photoluminescence, Color rendering index, Optoelectronics, Perovskite (structure), Diode, Light-emitting diode, Color temperature, Inorganic chemistry, Crystallography, ChemistryTop concepts (fields/topics) attached by OpenAlex
- Cited by
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32Total citation count in OpenAlex
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2025: 32Per-year citation counts (last 5 years)
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60Number of works referenced by this work
- Related works (count)
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10Other works algorithmically related by OpenAlex
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