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Sokolova, Anastasiia
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Topics
Publications (6/6 displayed)
- 2024Red-Emitting CsPbI3 /ZnSe Colloidal Nanoheterostructures with Enhanced Optical Properties and Stabilitycitations
- 2024Near-infrared two-photon excited photoluminescence from Yb3+-doped CsPbClxBr3−x perovskite nanocrystals embedded into amphiphilic silica microspherescitations
- 2023Anion-assisted Yb3+ and Mn2+ doping of 0D and 2D lead halide perovskite nanostructurescitations
- 2021Interface Chemical Modification between All-Inorganic Perovskite Nanocrystals and Porous Silica Microspheres for Composite Materials with Improved Emissioncitations
- 2019EFFECT OF LIQUID NITROGEN TREATMENT ON LEAD-FREE (CH3NH3)3BI2I9 PEROVSKITES FILMS
- 2019OPTICAL PROPERTIES STABILITY OF CSPBX3 NANOCRYSTALS EMBEDDED IN POROUS GLASS MATRIX
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article
Red-Emitting CsPbI3 /ZnSe Colloidal Nanoheterostructures with Enhanced Optical Properties and Stability
Abstract
Producing heterostructures of cesium lead halide perovskites and metal-chalcogenides in the form of colloidal nanocrystals can improve their optical features and stability, and also govern the recombination of charge carriers. Herein, the synthesis of red-emitting CsPbI<sub>3</sub>/ZnSe nanoheterostructures is reported via an in situ hot injection method, which provides the crystallization conditions for both components, subsequently leading to heteroepitaxial growth. Steady-state absorption and photoluminescence studies alongside X-ray photoelectron spectroscopy and ultraviolet photoelectron spectroscopy analysis evidence on a type-I band alignment for CsPbI<sub>3</sub>/ZnSe nanoheterostructures, which exhibit photoluminescence quantum yield of 96% due to the effective passivation of surface defects, and an enhancement in carrier lifetime. Furthermore, the heterostructure growth of ZnSe domains leads to significant improvement in the stability of the CsPbI<sub>3</sub> nanocrystals under ambient conditions and against thermal and UV irradiation stress. © 2024 The Author(s). Small published by Wiley-VCH GmbH.