Europium Doping Effects on the Properties of CsPbBr3 Nanocrystals: In-situ vs. Ex-situ Synthetic Path Analysis DOI Creative Commons
Hila Shalom,

Raanan Carmieli,

Pini Shekhter

et al.

Published: Aug. 16, 2024

Metal halide perovskites (MHPs), particularly CsPbBr3 nanocrystals (NCs), attract significant interest due to their remarkable optoelectronic properties. These properties make them ideally suited for applications such as photovoltaics and ionizing radiation detectors. However, NCs suffer from poor luminescence efficiency short service life. Doping with rare earth (RE) elements, especially europium (Eu), has emerged a viable method solving these problems because of unique electronic structure. RE improves extends the life MHPs, enhancing catalytic capabilities. This study examines effects in-situ ex-situ doping on structural, optical, photocatalytic NCs. In-situ was achieved by introducing dopant during NC synthesis, while involved adding pre-prepared via sonochemical synthesis an ultrasonic bath. The doped exhibit enhanced emission boosted activity, showcasing multifaceted benefits Eu ions doping. concludes that doping, at 5 wt%, significantly enhances structural functional characteristics NCs, offering promising approach improving performance in applications.

Language: Английский

An appraisal of the role of lanthanide doping in stabilization and performance improvement of [Sm3+-Eu3+-Tm3+]:CsPbI2.2Br0.8 for high-performance energy systems DOI
Shaan Bibi Jaffri, Khuram Shahzad Ahmad, Isaac Abrahams

et al.

Electrochimica Acta, Journal Year: 2024, Volume and Issue: 487, P. 144186 - 144186

Published: March 28, 2024

Language: Английский

Citations

5
Unveiling the Mysterious Structure Growth of 2D and 3D All‐Inorganic Perovskite Nanocrystals in Solution Phase Dynamically by Using Small‐Wide Angle X‐Ray Scattering Spectroscopy DOI

Kuan‐Chang Wu,

Je‐Wei Chang, Yi‐Chia Chen

et al.

Small Methods, Journal Year: 2025, Volume and Issue: unknown

Published: May 3, 2025

Abstract Real‐time analysis of the structural formation 2D and 3D perovskites in solution is challenging due to sensitivity perovskite intermediates environmental conditions their rapid growth. Conventional techniques often require stringent sample preparation, limiting ability study dynamic behaviors solution. In this study, small‐ wide‐angle X‐ray scattering (SWAXS) employed analyze morphology dynamics nanostructures native colloidal state. Unlike previous studies that attribute CsPbI 3 degradation delta‐phase formation, SWAXS revealed preexisting Cs 7 Pb 6 I 19 nanosheets pristine solutions. situ tracked transformation these structures during recrystallization diluted Adding bis(trimethylsilyl)sulfide (TMS) disassembled nanosheets, while subsequent a poor solvent formed highly crystalline nanosheets. The aligned with crystal growth theory, TMS concentration playing critical role. Higher concentrations slowed recrystallization, promoting stable lattice enhanced crystallinity, resulting bright yellow emission. Conversely, lower accelerated causing damage high‐crystallinity This highlights importance controlling rates through optimize crystallinity optoelectronic properties perovskites, offering insights into improving performance.

Language: Английский

Citations

0
Europium Doping Effects on the Properties of CsPbBr3 Nanocrystals: In-situ vs. Ex-situ Synthetic Path Analysis DOI Creative Commons
Hila Shalom,

Raanan Carmieli,

Pini Shekhter

et al.

Published: Aug. 16, 2024

Metal halide perovskites (MHPs), particularly CsPbBr3 nanocrystals (NCs), attract significant interest due to their remarkable optoelectronic properties. These properties make them ideally suited for applications such as photovoltaics and ionizing radiation detectors. However, NCs suffer from poor luminescence efficiency short service life. Doping with rare earth (RE) elements, especially europium (Eu), has emerged a viable method solving these problems because of unique electronic structure. RE improves extends the life MHPs, enhancing catalytic capabilities. This study examines effects in-situ ex-situ doping on structural, optical, photocatalytic NCs. In-situ was achieved by introducing dopant during NC synthesis, while involved adding pre-prepared via sonochemical synthesis an ultrasonic bath. The doped exhibit enhanced emission boosted activity, showcasing multifaceted benefits Eu ions doping. concludes that doping, at 5 wt%, significantly enhances structural functional characteristics NCs, offering promising approach improving performance in applications.

Language: Английский

Citations

1