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Phase stabilization of cesium lead iodide perovskites for use in efficient optoelectronic devices.
NPG Asia Mater
May 2024
Department of Chemistry, KU Leuven, Leuven, Belgium.
All-inorganic lead halide perovskites (LHPs) and their use in optoelectronic devices have been widely explored because they are more thermally stable than their hybrid organic‒inorganic counterparts. However, the active perovskite phases of some inorganic LHPs are metastable at room temperature due to the critical structural tolerance factor. For example, black phase CsPbI is easily transformed back to the nonperovskite yellow phase at ambient temperature.
View Article and Find Full Text PDFPost-Degradation Recovery of CsPbI Quantum Dot Solar Cells.
Small
January 2025
Chair for Emerging Electronic Technologies, TUD Dresden University of Technology, Nöthnitzer Straße 61, 01187, Dresden, Germany.
The stability of perovskite quantum dot solar cells is one of the key challenges of this technology. This study reveals the unique degradation behavior of cesium lead triiodide (CsPbI) quantum dot solar cells. For the first time, it is shown that the oxygen-induced degradation and performance loss of CsPbI quantum dot photovoltaic devices can be reversed by exposing the degraded samples to humidity, allowing the performance to recover and even surpass the initial performance.
View Article and Find Full Text PDFEffects of Polymer Matrix and Atmospheric Conditions on Photophysical Properties of a Cesium Lead Bromide (CsPbBr) Perovskite Quantum Dot.
J Phys Chem Lett
January 2025
Department of Chemistry, Yonsei University, Wonju, Gangwon 26493, Korea.
Understanding the environment-dependent stability and photoluminescence (PL) properties of advanced perovskite materials remains a challenge with conflicting views. Herein, we investigated the influence of the host matrix (poly(methyl methacrylate) (PMMA) and polystyrene (PS)) and atmospheric conditions (ambient and N) on the PL properties of a CsPbBr perovskite quantum dot (PQD) using single-particle spectroscopy. Despite the same PL blinking mechanism, the PL properties of the PQD were considerably affected by the environmental conditions.
View Article and Find Full Text PDFDisentangling the Relationship Between Urinary Metal Exposure and Osteoporosis Risk Across a Broad Population: A Comprehensive Supervised and Unsupervised Analysis.
Toxics
November 2024
Medical School, Southeast University, Nanjing 210096, China.
: Limited evidence links urinary metal exposure to osteoporosis in broad populations, prompting this study to cover this knowledge gap using supervised and unsupervised approaches. : This study included 15,923 participants from the National Health and Nutrition Examination Survey (NHANES) spanning from 1999 to 2020. Urinary concentrations of nine metals-barium (Ba), cadmium (Cd), cobalt (Co), cesium (Cs), molybdenum (Mo), lead (Pb), antimony (Sb), thallium (Tl), and tungsten (Tu)-were measured using inductively coupled plasma mass spectrometry (ICP-MS).
View Article and Find Full Text PDFAssociations between heavy metal exposure and vascular age: a large cross-sectional study.
J Transl Med
January 2025
Department of Cardiology, Tongji Hospital, School of Medicine, Tongji University, No. 389 Xincun Road, Shanghai, 200065, China.
Background: Heavy metal exposure is an emerging environmental risk factor linked to cardiovascular disease (CVD) through its effects on vascular ageing. However, the relationship between heavy metal exposure and vascular age have not been fully elucidated.
Methods: This cross-sectional study analyzed data from 3,772 participants in the National Health and Nutrition Examination Survey (NHANES) from 2005 to 2016.
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