Nanocrystals of Cesium Lead Halide Perovskites (CsPbX3, X = Cl, Br, and I): Novel Optoelectronic Materials Showing Bright Emission with Wide Color Gamut
Loredana Protesescu,Loredana Protesescu,Sergii Yakunin,Sergii Yakunin,Maryna I. Bodnarchuk,Maryna I. Bodnarchuk,Franziska Krieg,Franziska Krieg,Riccarda Caputo,Christopher H. Hendon,Ruo Xi Yang,Aron Walsh,Maksym V. Kovalenko,Maksym V. Kovalenko +13 more
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TLDR
The compelling combination of enhanced optical properties and chemical robustness makes CsPbX3 nanocrystals appealing for optoelectronic applications, particularly for blue and green spectral regions (410–530 nm), where typical metal chalcogenide-based quantum dots suffer from photodegradation.Abstract:
Metal halides perovskites, such as hybrid organic–inorganic CH3NH3PbI3, are newcomer optoelectronic materials that have attracted enormous attention as solution-deposited absorbing layers in solar cells with power conversion efficiencies reaching 20%. Herein we demonstrate a new avenue for halide perovskites by designing highly luminescent perovskite-based colloidal quantum dot materials. We have synthesized monodisperse colloidal nanocubes (4–15 nm edge lengths) of fully inorganic cesium lead halide perovskites (CsPbX3, X = Cl, Br, and I or mixed halide systems Cl/Br and Br/I) using inexpensive commercial precursors. Through compositional modulations and quantum size-effects, the bandgap energies and emission spectra are readily tunable over the entire visible spectral region of 410–700 nm. The photoluminescence of CsPbX3 nanocrystals is characterized by narrow emission line-widths of 12–42 nm, wide color gamut covering up to 140% of the NTSC color standard, high quantum yields of up to 90%, and radiativ...read more
Citations
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Rational Interface Engineering for Efficient Flexible Perovskite Light-Emitting Diodes
Yang Shen,Meng-Ni Li,Yan-Qing Li,Yan-Qing Li,Feng-Ming Xie,Hai-Yan Wu,Guang-Hui Zhang,Li Chen,Shuit-Tong Lee,Shuit-Tong Lee,Jian-Xin Tang,Jian-Xin Tang +11 more
TL;DR: An improved flexible Pe LED structure based on the rational interface engineering for energy-efficient photon generation and enhanced light outcoupling is presented, achieving a record external quantum efficiency of 24.5% for flexible PeLEDs based on green-emitting CsPbBr3 perovskite.
Journal ArticleDOI
Review on Sensing Applications of Perovskite Nanomaterials
Muthaiah Shellaiah,Kien-Wen Sun +1 more
TL;DR: In this paper, the sensing applications of those perovskite materials with diverse cations, dopants and composites are discussed, and the underlying mechanisms and electron transport properties are discussed.
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Ligand-Free, Quantum-Confined Cs2SnI6 Perovskite Nanocrystals
Dmitriy S. Dolzhnikov,Dmitriy S. Dolzhnikov,Chen Wang,Yadong Xu,Mercouri G. Kanatzidis,Mercouri G. Kanatzidis,Emily A. Weiss,Emily A. Weiss +7 more
TL;DR: In this paper, a new synthesis procedure for quantum-confined Cs2SnI6 nanocrystals with size-dependent band gaps in the long-visible to near-infrared (1.38-1.47 eV) was described.
Journal ArticleDOI
Perovskite Quantum Dots Encapsulated in a Mesoporous Metal-Organic Framework as Synergistic Photocathode Materials.
Guan-Yu Qiao,Dehui Guan,Shuai Yuan,Heng Rao,Xiao Chen,Jia-Ao Wang,Jun-Sheng Qin,Ji-Jing Xu,Jihong Yu +8 more
TL;DR: The CsPbBr3@PCN-333(Fe) composite exhibited excellent and stable oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) catalytic activities in aprotic systems and worked as the synergistic photocathode in the photoassisted Li-O2 battery.
Journal ArticleDOI
Solvothermal Synthesis of Ultrathin Cesium Lead Halide Perovskite Nanoplatelets with Tunable Lateral Sizes and Their Reversible Transformation into Cs4PbBr6 Nanocrystals
Wei Zhai,Jing Lin,Qiaoling Li,Kun Zheng,Yang Huang,Yuanzhao Yao,Xin He,Lanlan Li,Chao Yu,Chang Liu,Yi Fang,Zhenya Liu,Chengchun Tang +12 more
TL;DR: In this paper, an effective solvothermal method for the controllable synthesis of CsPbBr3 nanoplatelets (NPLs) and their transformation to Cs4PbBR6 NCs is presented.
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