Synthetic method of pure-red emissive CsPbI3 under ambient conditions for quantum-dot light-emitting diode application

Perovskite quantum dots (PeQDs) are expected to be used in ultra-high-definition television (UHDTV) due to their excellent optical properties. However, pure-red emissive ( λ _EL : 620–650 nm) PeQD-based LEDs (PeLEDs) are required for UHDTV with single-halogen PeQDs synthesized under ambient conditio...

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Bibliographic Details
Published in:Applied physics express 2024-02, Vol.17 (2), p.025002
Main Authors: Yoshida, Kenshin, Oshita, Naoaki, Kimura, Taisei, Goto, Mao, Oikawa, Ryosuke, Uwano, Mizuho, Asakura, Satoshi, Chiba, Takayuki, Masuhara, Akito
Format: Article
Language:English
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Summary:Perovskite quantum dots (PeQDs) are expected to be used in ultra-high-definition television (UHDTV) due to their excellent optical properties. However, pure-red emissive ( λ _EL : 620–650 nm) PeQD-based LEDs (PeLEDs) are required for UHDTV with single-halogen PeQDs synthesized under ambient conditions, which is important for practical use. Hence, we established a novel synthetic method to prepare PeQDs under ambient conditions via a different reaction from conventional methods. We successfully prepared PeQDs with pure-red emissivity λ _PL : 631 nm and near-unity photoluminescence quantum yield. The PeLEDs with the PeQDs showed pure-red emission of 647 nm.
ISSN:1882-0778
1882-0786
DOI:10.35848/1882-0786/ad2025