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
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Highly Luminescent Lead Halide Perovskite Quantum Dots in Hierarchical CaF2 Matrices with Enhanced Stability as Phosphors for White Light‐Emitting Diodes
Yi Wei,Yi Wei,Hui Xiao,Hui Xiao,Zhongxi Xie,Zhongxi Xie,Shuang Liang,Sisi Liang,Sisi Liang,Xuechao Cai,Shanshan Huang,Abdulaziz A. Al Kheraif,Ho Seong Jang,Ziyong Cheng,Jun Lin,Jun Lin +15 more
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Efficient and stable CsPbI3 perovskite quantum dots enabled by in situ ytterbium doping for photovoltaic applications
TL;DR: In this article, an in situ ytterbium (Yb) doping strategy was used to improve the performance of perovskite quantum dots (QDs) in photovoltaic cells.
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The Effect of Stoichiometry on the Stability of Inorganic Cesium Lead Mixed-Halide Perovskites Solar Cells
Qingshan Ma,Shujuan Huang,Sheng Chen,Meng Zhang,Cho Fai Jonathan Lau,Mark Lockrey,Hemant Kumar Mulmudi,Yuchao Shan,Jizhong Yao,Jianghui Zheng,Xiaofan Deng,Kylie R. Catchpole,Martin A. Green,Anita Ho-Baillie +13 more
TL;DR: In this article, the effect of varying stoichiometry of CsPbI2Br perovskite on film quality such as the grain size, presence of impurities and nature of impurity grains, photoluminescence, morphology, and elemental distribution are studied.
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Novel Fluorescence Sensor Based on All-Inorganic Perovskite Quantum Dots Coated with Molecularly Imprinted Polymers for Highly Selective and Sensitive Detection of Omethoate
Shuyi Huang,Manli Guo,Jiean Tan,Yuanyuan Geng,Jinyi Wu,Youwen Tang,Chaochin Su,Chun Che Lin,Yong Liang +8 more
TL;DR: A selective and simple FL sensor for direct and fast detection of organophosphorus pesticide in vegetable and soil samples was developed here.
Journal ArticleDOI
Quasi-2D Inorganic CsPbBr3 Perovskite for Efficient and Stable Light-Emitting Diodes
TL;DR: In this article, quasi-2D CsPbBr3 quantum wells homogeneously surrounded by inorganic crystalline Cs4pbBr6 of large bandgap are grown.
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