Silica-Coated Mn-Doped CsPb(Cl/Br)3 Inorganic Perovskite Quantum Dots: Exciton-to-Mn Energy Transfer and Blue-Excitable Solid-State Lighting

ACS Applied Materials & Interfaces
Daqin ChenXiao Chen

Abstract

Tunability of emitting colors of perovskite quantum dots (PQDs) was generally realized via composition/size modulation. Due to their bandgap absorption and ionic crystal features, the mixing of multiple PQDs inevitably suffers from reabsorption and anion-exchange effects. Herein, we address these issues with high-content Mn2+-doped CsPbCl3 PQDs that can yield blue-excitable orange Mn2+ emission benefited from exciton-to-Mn energy transfer and Cl-to-Br anion exchange. Silica-coating was applied to improve air stability of PQDs, suppress the loss of Mn2+, and avoid anion-exchange between different PQDs. As a direct benefit of intense multicolor emissions from Mn2+-doped PQD@SiO2 solid phosphors, a prototype white light-emitting diode with excellent optical performance and superior light stability was constructed using green CsPbBr3@SiO2 and orange Mn: CsPb(Cl/Br)3@SiO2 composites as color converters, verifying their potential applications in the field of optoelectronics.

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Citations

Jun 2, 2018·Chemical Communications : Chem Comm·Chao JiaHongbo Li
Nov 16, 2019·Materials·Maning LiuPaola Vivo
Jun 17, 2020·Chemical Society Reviews·Cheng-Hsin LuZhiqun Lin
Feb 4, 2021·The Journal of Physical Chemistry Letters·Shiping WangShengye Jin
Dec 4, 2019·Journal of the American Chemical Society·Qi SunShengye Jin
Apr 26, 2018·ACS Applied Materials & Interfaces·Xinyu ShenWilliam W Yu
Nov 27, 2018·ACS Applied Materials & Interfaces·Weiwei ChenXiaosheng Tang
Feb 23, 2019·ACS Applied Materials & Interfaces·Daqin ChenJiasong Zhong
Oct 3, 2018·Chemistry of Materials : a Publication of the American Chemical Society·Kunyuan Xu, Andries Meijerink
Nov 25, 2020·The Journal of Physical Chemistry Letters·Brenda VargasDiego Solis-Ibarra
Jul 11, 2019·The Journal of Physical Chemistry Letters·Ke XingJialong Zhao
Aug 20, 2019·ACS Applied Materials & Interfaces·Jiajun LuoJiang Tang
Mar 20, 2020·The Journal of Physical Chemistry Letters·Rebecca B WaiNaomi S Ginsberg
Apr 16, 2019·ACS Applied Materials & Interfaces·Na ChenOu Chen
Mar 16, 2019·The Journal of Physical Chemistry. C, Nanomaterials and Interfaces·Kunyuan XuAndries Meijerink

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