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One-Pot Synthesis of CsPbX3 (X = Cl, Br, I)@Zeolite: A Potential Material for Wide-Color-Gamut Backlit Displays and Upconversion Emission
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2021-03-14 , DOI: 10.1002/adom.202100012 Yao Tong 1 , Qin Wang 2 , Enrou Mei 1 , Xiaojuan Liang 1 , Wei Gao 3 , Weidong Xiang 1
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2021-03-14 , DOI: 10.1002/adom.202100012 Yao Tong 1 , Qin Wang 2 , Enrou Mei 1 , Xiaojuan Liang 1 , Wei Gao 3 , Weidong Xiang 1
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All-inorganic perovskite (CsPbX3, X = Cl, Br, I) nanocrystals (NCs) with promising optical properties are recognized as a rising star among photoelectric materials, but their inevitable instabilities limit extensive application. Herein, a new one-step strategy for encapsulating CsPbX3 NCs with porous zeolite via the hot injection method is explored. By altering the mole ratio of PbX2, the emission wavelength of CsPbX3@zeolite is found to be regularly modulated from blue-emission (CsPbCl2Br@zeolite, 436 nm) to red-emission (CsPbBrI2@zeolite, 648 nm), thus enabling full spectrum adjustment. Due to the surface passivation of zeolite to CsPbX3 NCs, CsPbX3@zeolite possess an outstanding quantum yield and display excellent thermal/photo/air stability. Subsequently, white light-emitting diodes based on green-CsPbBr3@zeolite and red-CsPbBrI2@zeolite are constructed and applied to the backlit display, achieving a wide color gamut of 134.2% for NTSC 1953 and 99.8% for Rec. 2020. The CsPbX3@zeolite implanted with a polymethyl methacrylate film is used to realize upconversion emission under an 800 nm laser at room temperature. Furthermore, amplified spontaneous radiation based on CsPbBr3@zeolite films is achieved. These results convincingly indicate broad application prospects for CsPbX3@zeolite prepared via this simple method.
中文翻译：
CsPbX3 (X = Cl, Br, I)@沸石的一锅法合成：一种用于广色域背光显示器和上转换发射的潜在材料
具有良好光学性能的全无机钙钛矿（CsPbX 3，X = Cl，Br，I）纳米晶体（NCs）被认为是光电材料中的后起之秀，但其不可避免的不稳定性限制了其广泛应用。在此，探索了一种通过热注射法用多孔沸石封装 CsPbX 3 NCs的新一步策略。通过改变 PbX 2的摩尔比，发现CsPbX 3 @沸石的发射波长从蓝色发射（CsPbCl 2 Br@沸石，436 nm）到红色发射（CsPbBrI 2 @沸石，648 nm）有规律地调制，从而实现全频谱调整。由于沸石表面钝化为 CsPbX 3 NCs，CsPbX3 @zeolite 具有出色的量子产率和出色的热/光/空气稳定性。随后，基于绿色-CsPbBr 3 @沸石和红色-CsPbBrI 2 @沸石的白色发光二极管被构建并应用于背光显示器，实现了 NTSC 1953 的 134.2% 和 Rec. 99.8% 的宽色域。2020.植入聚甲基丙烯酸甲酯薄膜的CsPbX 3 @沸石用于在室温下800 nm激光下实现上转换发射。此外，实现了基于 CsPbBr 3 @沸石薄膜的放大自发辐射。这些结果令人信服地表明通过这种简单方法制备的CsPbX 3 @沸石具有广阔的应用前景。
更新日期：2021-03-14
中文翻译：
CsPbX3 (X = Cl, Br, I)@沸石的一锅法合成：一种用于广色域背光显示器和上转换发射的潜在材料
具有良好光学性能的全无机钙钛矿（CsPbX 3，X = Cl，Br，I）纳米晶体（NCs）被认为是光电材料中的后起之秀，但其不可避免的不稳定性限制了其广泛应用。在此，探索了一种通过热注射法用多孔沸石封装 CsPbX 3 NCs的新一步策略。通过改变 PbX 2的摩尔比，发现CsPbX 3 @沸石的发射波长从蓝色发射（CsPbCl 2 Br@沸石，436 nm）到红色发射（CsPbBrI 2 @沸石，648 nm）有规律地调制，从而实现全频谱调整。由于沸石表面钝化为 CsPbX 3 NCs，CsPbX3 @zeolite 具有出色的量子产率和出色的热/光/空气稳定性。随后，基于绿色-CsPbBr 3 @沸石和红色-CsPbBrI 2 @沸石的白色发光二极管被构建并应用于背光显示器，实现了 NTSC 1953 的 134.2% 和 Rec. 99.8% 的宽色域。2020.植入聚甲基丙烯酸甲酯薄膜的CsPbX 3 @沸石用于在室温下800 nm激光下实现上转换发射。此外，实现了基于 CsPbBr 3 @沸石薄膜的放大自发辐射。这些结果令人信服地表明通过这种简单方法制备的CsPbX 3 @沸石具有广阔的应用前景。
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