The importance of transport phenomena on the flow synthesis of monodispersed sharp blue-emitting perovskite CsPbBr3 nanoplatelets

The importance of transport phenomena on the flow synthesis of monodispersed sharp blue-emitting perovskite CsPbBr3 nanoplatelets
复制标题

输运现象对单分散锐蓝光钙钛矿 CsPbBr3 纳米片流动合成的重要性

DOI:
10.1016/j.cej.2022.138752
复制
发表时间:
2023
影响因子:
15.1
通讯作者:
Zhang K
Zhang K
中科院分区:
工程技术1区
文献类型:
--
作者:
Zhang K

文献摘要

参考文献

相似文献

这项工作证明了传输现象对卤化物钙钛矿纳米片合成的重要性。本文所示的CsPbBr 3,我们证明了需要快速和均匀的混合,以实现单分散晶体,在这种情况下,尖锐的蓝色发射。我们的合成方法的模块化,结合流体动力学模拟,定制的3D流动反应器和在线测量(紫外-可见吸收和光致发光)揭示了对这些钙钛矿纳米材料生长的基本理解,这反过来又导致了最大的尺寸减小(2.2 ± 0.3 nm)和性质(在472 nm波长处的尖锐蓝色发射,和PLQY 24.5 ± 0.4%)。采用相同前体、条件和反应温度的对应常规热注射分批合成产生在501 nm处具有PL的产物,其中批次间变化较大。理解在非常早期阶段(在最初的100-300 ms内)的合成的动力学表明,前体的混合不仅在成核步骤期间(如先前所认为的)而且在生长阶段期间起关键作用。这种流体性质可以在有目的设计的3D微反应器中容易地预测,以提供能够满足各种应用对蓝光发射器的大量需求的一致且稳定的输出。
This work demonstrates the importance of transport phenomena on the synthesis of halide perovskite nanoplatelets. Illustrated herein for CsPbBr3, we demonstrate the need for fast and homogeneous mixing to achieve monodispered crystals, in this case with sharp blue emission. The modularity of our synthesis method, combining fluid dynamic simulations, bespoke 3D flow reactors and on-line measurements (UV–vis absorbance and photoluminescence) reveals fundamental understanding about the growth of these perovskite nano-materials, which in turn leads to superlative size reducibility (2.2 ± 0.3 nm) and properties (sharp blue emission at 472 nm wavelength, and PLQY 24.5 ± 0.4 %). The counterpart conventional hot injection batch synthesis with the same precursors, conditions and reaction temperature yields a product with PL at 501 nm with large batch to batch variations. Understanding the dynamics of the synthesis in the very early stages (within the first 100–300 ms) shows that mixing of the precursors plays a key role not only during the nucleation step, as previously believed, but also during the growth stage. Such fluid properties can be easily predicted in purposefully designed 3D microreactors to provide a consistent and steady output capable of fulfilling the large demand of blue light emitters for a variety of applications.
批次间差异:化学制造过程建模的关键组成部分
DOI: --
发表时间: 2015
期刊:
影响因子: --
作者:
L. Mockus;John J. Peterson;J. Laínez;G. Reklaitis
通讯作者: G. Reklaitis
DOI: 10.1021/acsnano.0c08903
发表时间: 2021-07-27
期刊: ACS nano
影响因子: 17.1
作者:
Dey A;Ye J;De A;Debroye E;Ha SK;Bladt E;Kshirsagar AS;Wang Z;Yin J;Wang Y;Quan LN;Yan F;Gao M;Li X;Shamsi J;Debnath T;Cao M;Scheel MA;Kumar S;Steele JA;Gerhard M;Chouhan L;Xu K;Wu XG;Li Y;Zhang Y;Dutta A;Han C;Vincon I;Rogach AL;Nag A;Samanta A;Korgel BA;Shih CJ;Gamelin DR;Son DH;Zeng H;Zhong H;Sun H;Demir HV;Scheblykin IG;Mora-Seró I;Stolarczyk JK;Zhang JZ;Feldmann J;Hofkens J;Luther JM;Pérez-Prieto J;Li L;Manna L;Bodnarchuk MI;Kovalenko MV;Roeffaers MBJ;Pradhan N;Mohammed OF;Bakr OM;Yang P;Müller-Buschbaum P;Kamat PV;Bao Q;Zhang Q;Krahne R;Galian RE;Stranks SD;Bals S;Biju V;Tisdale WA;Yan Y;Hoye RLZ;Polavarapu L
通讯作者: Polavarapu L
DOI: 10.1038/s41467-019-13580-w
发表时间: 2019-12-10
影响因子: 16.6
作者:
Wang, Qi;Wang, Xiaoming;Huang, Jinsong
通讯作者: Huang, Jinsong
DOI: --
发表时间: 1970
期刊:
影响因子: --
作者:
O. Levenspiel;J. Turner
通讯作者: J. Turner
DOI: 10.1039/d0re00129e
发表时间: 2020-07-01
影响因子: 3.9
作者:
Epps, Robert W.;Volk, Amanda A.;Abolhasani, Milad
通讯作者: Abolhasani, Milad