B-site substitution perovskite quantum dots (PQDs) with amended stability and less toxicity have been acquainted in recent years. However, the PQDs comprising various B-site cations display low photoluminescence quantum yields (PLQYs), instability, and require skimpy synthesis procedure. Herein, we have endeavored to introduce ultrasonication synthesis of MAPb1_-xZn_xBr₃ PQDs as an auspicious route to stable PQDs with enhanced PLQY. The successful synthesis of PQDs resulted in a high PLQY (>93%), which is supposed to be owing to the decrease in non-radiative recombination centers. Furthermore, we have found that the structure, morphology, and emission properties are secured with the substitution of Zn²⁺. The PQDs have been integrated as color converting layers coated on blue light emitting diode (LED) chips, which exhibit white light with the wide color gamut of National Television Standards Committee (NTSC) 124%. The present research reveals a new synthesis route to obtain stable and efficient PQDs without negotiating color quality for display application.

近年来，人们已经认识到具有改进的稳定性和较低毒性的B位取代钙钛矿量子点（PQD）。但是，包含各种B位阳离子的PQD显示出低的光致发光量子产率（PLQY），不稳定性，并且需要简略的合成程序。在本文中，我们已尝试引入超声合成MAPb1 _-x Zn _x Br ₃ PQD的方法，以此作为获得具有增强PLQY的稳定PQD的吉祥途径。PQD的成功合成导致了较高的PLQY（> 93％），这可能是由于非辐射重组中心的减少所致。此外，我们发现通过取代Zn ²⁺可以确保结构，形态和发射性能。。PQD已集成为涂在蓝色发光二极管（LED）芯片上的色彩转换层，该芯片显示的白光色域为美国国家电视标准委员会（ NTSC）的124％。本研究揭示了一种新的合成途径，可在不协商用于显示应用的颜色质量的情况下获得稳定和有效的PQD。