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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Engineering the Exciton Dissociation in Quantum‐Confined 2D CsPbBr3 Nanosheet Films
Zhi Yang,Minqiang Wang,Hengwei Qiu,Xi Yao,Xiangzhou Lao,Shijie Xu,Zhonghai Lin,Luyi Sun,Jinyou Shao +8 more
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A General Strategy for In Situ Growth of All-Inorganic CsPbX3 (X = Br, I, and Cl) Perovskite Nanocrystals in Polymer Fibers toward Significantly Enhanced Water/Thermal Stabilities
Hao Liao,Hao Liao,Shibo Guo,Sheng Cao,Lin Wang,Fengmei Gao,Zuobao Yang,Jinju Zheng,Weiyou Yang +8 more
Journal ArticleDOI
In situ ligand bonding management of CsPbI 3 perovskite quantum dots enables high-performance photovoltaics and red light-emitting diodes
Junwei Shi,Fangchao Li,Yan Jin,Cheng Liu,Ben Cohen-Kleinstein,Shuai Yuan,Youyong Li,Zhao-Kui Wang,Jianyu Yuan,Wanli Ma +9 more
TL;DR: The L-PHE passivated CsPbI 3 QDs enabled us to realize QD solar cells with an optimal efficiency of 14.62% and red light-emitting diodes (LEDs) with a highest external quantum efficiency (EQE) of 10.21%, respectively, demonstrating the great potential of ligand bonding management in improving the optoelectronic properties of solution-processed perovskite QDs.
Journal ArticleDOI
A “Tips and Tricks” Practical Guide to the Synthesis of Metal Halide Perovskite Nanocrystals
Yangning Zhang,Timothy D. Siegler,Cherrelle J. Thomas,Michael K. Abney,Tushti Shah,Anastacia De Gorostiza,Randalynn M. Greene,Brian A. Korgel +7 more
TL;DR: The metal halide perovskite nanocrystals offer a range of interesting properties and are being studied extensively for applications in solar cells, photodetectors and light-emitting devices as discussed by the authors.
Journal ArticleDOI
Energy Transfer between Inorganic Perovskite Nanocrystals
Chris de Weerd,Leyre Gomez,Hong Zhang,Wybren Jan Buma,Georgian Nedelcu,Georgian Nedelcu,Maksym V. Kovalenko,Maksym V. Kovalenko,Tom Gregorkiewicz +8 more
TL;DR: In this article, the authors demonstrate nonradiative energy transfer for colloidal CsPbBr3 nanocrystals using time-resolved optical characterization of purposefully prepared batches of nanocrystal with different sizes.
References
More filters
Journal ArticleDOI
From ultrasoft pseudopotentials to the projector augmented-wave method
Georg Kresse,Daniel P. Joubert +1 more
TL;DR: In this paper, the formal relationship between US Vanderbilt-type pseudopotentials and Blochl's projector augmented wave (PAW) method is derived and the Hamilton operator, the forces, and the stress tensor are derived for this modified PAW functional.
Journal ArticleDOI
Synthesis and characterization of nearly monodisperse CdE (E = sulfur, selenium, tellurium) semiconductor nanocrystallites
TL;DR: In this paper, a simple route to the production of high-quality CdE (E=S, Se, Te) semiconductor nanocrystallites is presented, based on pyrolysis of organometallic reagents by injection into a hot coordinating solvent.
Journal ArticleDOI
Phonons and related crystal properties from density-functional perturbation theory
TL;DR: In this paper, the current status of lattice-dynamical calculations in crystals, using density-functional perturbation theory, with emphasis on the plane-wave pseudopotential method, is reviewed.
Journal ArticleDOI
Interface engineering of highly efficient perovskite solar cells
Huanping Zhou,Qi Chen,Gang Li,Song Luo,Tze Bing Song,Hsin Sheng Duan,Ziruo Hong,Jingbi You,Yongsheng Liu,Yang Yang +9 more
TL;DR: Perovskite films received a boost in photovoltaic efficiency through controlled formation of charge-generating films and improved current transfer to the electrodes and low-temperature processing steps allowed the use of materials that draw current out of the perovskites layer more efficiently.
Journal ArticleDOI
The emergence of perovskite solar cells
TL;DR: In this article, a review describes the rapid progress that has been made in hybrid organic-inorganic perovskite solar cells and their applications in the photovoltaic sector.