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.

中文翻译：

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用于量子点发光二极管应用的纯红光CsPbI3常温合成方法

钙钛矿量子点（PeQD）由于其优异的光学性能，有望应用于超高清电视（UHDTV）。然而，纯红色发射（λ _EL：620–650 nm) UHDTV 需要基于 PeQD 的 LED (PeLED)，在环境条件下合成单卤素 PeQD，这对于实际应用很重要。因此，我们建立了一种新的合成方法，通过与传统方法不同的反应在环境条件下制备PeQD。我们成功制备了具有纯红色发射率的PeQDλ _PL：631 nm 和接近一致的光致发光量子产率。带有 PeQD 的 PeLED 显示出 647 nm 的纯红色发射。