Microcarrier-Assisted Inorganic Shelling of Lead Halide Perovskite Nanocrystals

被引:56
作者
Dirin, Dmitry N. [1 ,2 ]
Benin, Bogdan M. [1 ,2 ]
Yakunin, Sergii [1 ,2 ]
Krumeich, Frank [1 ]
Raino, Gabriele [1 ,2 ]
Frison, Ruggero [3 ,4 ]
Kovalenko, Maksym V. [1 ,2 ]
机构
[1] Swiss Fed Inst Technol, Dept Chem & Appl Biosci, Inst Inorgan Chem, CH-8093 Zurich, Switzerland
[2] Empa Swiss Fed Labs Mat Sci & Technol, Lab Thin Films & Photovolta, CH-8600 Dubendorf, Switzerland
[3] Univ Zurich, Dept Chem, CH-8057 Zurich, Switzerland
[4] Empa Swiss Fed Labs Mat Sci & Technol, Ctr Xray Analyt, CH-8600 Dubendorf, Switzerland
基金
欧盟地平线“2020”;
关键词
lead halide perovskite; luminescence; nanocrystals; stability; core/shell; POLYHEDRAL OLIGOMERIC SILSESQUIOXANE; ANION-EXCHANGE REACTIONS; HIGHLY LUMINESCENT; QUANTUM DOTS; COLLOIDAL SYNTHESIS; ENHANCED STABILITY; OPTICAL-PROPERTIES; CSPBX3; X; BR; EMISSION;
D O I
10.1021/acsnano.9b05481
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The conventional strategy of synthetic colloidal chemistry for bright and stable quantum dots has been the production of epitaxially matched core/shell heterostructures to mitigate the presence of deep trap states. This mindset has been shown to be incompatible with lead halide perovskite nanocrystals (LHP NCs) due to their dynamic surface and low melting point. Nevertheless, enhancements to their chemical stability are still in great demand for the deployment of LHP NCs in light-emitting devices. Rather than contend with their attributes, we propose a method in which we can utilize their dynamic, ionic lattice and uniquely defect-tolerant band structure to prepare non-epitaxial salt-shelled heterostructures that are able to stabilize these materials against their environment, while maintaining their excellent optical properties and increasing scattering to improve out-coupling efficiency. To do so, anchored LHP NCs are first synthesized through the heterogeneous nucleation of LHPs onto the surface of microcrystalline carriers, such as alkali halides. This first step stabilizes the LHP NCs against further merging, and this allows them to be coated with an additional inorganic shell through the surface-mediated reaction of amphiphilic Na and Br precursors in apolar media. These inorganically shelled NC@carrier composites offer significantly improved chemical stability toward polar organic solvents, such as gamma-butyrolactone, acetonitrile, N-methylpyrrolidone, and trimethylamine, demonstrate high thermal stability with photoluminescence intensity reversibly dropping by no more than 40% at temperatures up to 120 degrees C, and improve compatibility with various UV-curable resins. This mindset for LHP NCs creates opportunities for their successful integration into next-generation light-emitting devices.
引用
收藏
页码:11642 / 11652
页数:11
相关论文
共 98 条
[1]   Hybrid remote quantum dot/powder phosphor designs for display backlights [J].
Abe, Sofie ;
Joos, Jonas J. ;
Martin, Lisa I. D. J. ;
Hens, Zeger ;
Smet, Philippe F. .
LIGHT-SCIENCE & APPLICATIONS, 2017, 6 :e16271-e16271
[2]   Two Dimensional Organometal Halide Perovskite Nanorods with Tunable Optical Properties [J].
Aharon, Sigalit ;
Etgar, Lioz .
NANO LETTERS, 2016, 16 (05) :3230-3235
[3]   Precipitation and Optical Properties of CsPbBr3 Quantum Dots in Phosphate Glasses [J].
Ai, Bing ;
Liu, Chao ;
Wang, Jing ;
Xie, Jun ;
Han, Jianjun ;
Zhao, Xiujian .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2016, 99 (09) :2875-2877
[4]   Genesis, challenges and opportunities for colloidal lead halide perovskite nanocrystals [J].
Akkerman, Quinten A. ;
Raino, Gabriele ;
Kovalenko, Maksym V. ;
Manna, Liberato .
NATURE MATERIALS, 2018, 17 (05) :394-405
[5]   Solution Synthesis Approach to Colloidal Cesium Lead Halide Perovskite Nanoplatelets with Monolayer-Level Thickness Control [J].
Akkerman, Quinten A. ;
Motti, Silvia Genaro ;
Kandada, Ajay Ram Srimath ;
Mosconi, Edoardo ;
D'Innocenzo, Valerio ;
Bertoni, Giovanni ;
Marras, Sergio ;
Kamino, Brett A. ;
Miranda, Laura ;
De Angelis, Filippo ;
Petrozza, Annamaria ;
Prato, Mirko ;
Manna, Liberato .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2016, 138 (03) :1010-1016
[6]   Tuning the Optical Properties of Cesium Lead Halide Perovskite Nanocrystals by Anion Exchange Reactions [J].
Akkerman, Quinten A. ;
D'Innocenzo, Valerio ;
Accornero, Sara ;
Scarpellini, Alice ;
Petrozza, Annamaria ;
Prato, Mirko ;
Manna, Liberato .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2015, 137 (32) :10276-10281
[7]  
[Anonymous], 2019, APPL QUANTUM DOTS DI
[8]  
[Anonymous], 2019, CADMIUM FREE QUANTUM
[9]   Templated Synthesis of Uniform Perovskite Nanowire Arrays [J].
Ashley, Michael J. ;
O'Brien, Matthew N. ;
Hedderick, Konrad R. ;
Mason, Jarad A. ;
Ross, Michael B. ;
Mirkin, Chad A. .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2016, 138 (32) :10096-10099
[10]   Bright triplet excitons in caesium lead halide perovskites [J].
Becker, Michael A. ;
Vaxenburg, Roman ;
Nedelcu, Georgian ;
Sercel, Peter C. ;
Shabaev, Andrew ;
Mehl, Michael J. ;
Michopoulos, John G. ;
Lambrakos, Samuel G. ;
Bernstein, Noam ;
Lyons, John L. ;
Stoferle, Thilo ;
Mahrt, Rainer F. ;
Kovalenko, Maksym V. ;
Norris, David J. ;
Raino, Gabriele ;
Efros, Alexander L. .
NATURE, 2018, 553 (7687) :189-+