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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Polar-solvent-free colloidal synthesis of highly luminescent alkylammonium lead halide perovskite nanocrystals
Oleh Vybornyi,Oleh Vybornyi,Sergii Yakunin,Sergii Yakunin,Maksym V. Kovalenko,Maksym V. Kovalenko +5 more
TL;DR: A novel synthesis of hybrid organic-inorganic lead halide perovskite nanocrystals that does not involve the use of dimethylformamide or other polar solvents is presented and amplified spontaneous emission from thin films of green-emitting CH3NH3PbBr3 nanowires with low pumping thresholds is demonstrated.
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Tackling the Defects, Stability, and Photoluminescence of CsPbX3 Perovskite Nanocrystals
TL;DR: In this article, the authors describe defects have always been an integral part of semiconductor crystals, controlling their optical and electronic properties, even though growing popularity of the CsPbX3 (X = Cl, Br, I, and their mixt...
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Highly Air-Stable Carbon-Based α-CsPbI3 Perovskite Solar Cells with a Broadened Optical Spectrum
Sisi Xiang,Zhongheng Fu,Weiping Li,Ya Wei,Jiaming Liu,Huicong Liu,Liqun Zhu,Ruifeng Zhang,Haining Chen +8 more
TL;DR: In this paper, an α-Cesium lead halide perovskite (C-CsPbI3) was obtained in dry air (temperature: 20-30 °C; humidity: 10-20%).
Journal ArticleDOI
Synthesis, optoelectronic properties and applications of halide perovskites
Lata Chouhan,Sushant Ghimire,Challapalli Subrahmanyam,Tsutomu Miyasaka,Tsutomu Miyasaka,Vasudevanpillai Biju +5 more
TL;DR: This work comprehensively review recent advances in the synthesis and optoelectronic properties of films, microcrystals, nanocrystals and quantum dots of lead halide and lead-free halide perovskites and addresses the ensemble and single particle properties of perovkites from the viewpoints of the confinement and transport of charge carriers or excitons.
Journal ArticleDOI
Doped Halide Perovskite Nanocrystals for Reabsorption-Free Luminescent Solar Concentrators
Francesco Meinardi,Quinten A. Akkerman,Francesco Bruni,Sung Wook Park,Michele Mauri,Zhiya Dang,Liberato Manna,Sergio Brovelli +7 more
TL;DR: The suitability of manganese-doped CsPbCl3 NCs as reabsorption-free emitters for large-area LSCs is demonstrated and light propagation measurements and Monte Carlo simulations indicate that the dopant emission is unaffected by re absorption.
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