CsPbI3 Perovskite Nanorods: Enhancing Fluorescence Efficiency and Environmental Stability via Trioctylphosphine Ligand Coordination DOI Open Access

Chengqi Liu,

Z.A.Y. Abdalla, Xiaoqian Wang

и другие.

Materials, Год журнала: 2025, Номер 18(7), С. 1518 - 1518

Опубликована: Март 28, 2025

Metal halide perovskite nanorods hold great promise for optoelectronic applications. However, they tend to undergo phase transitions due the instability of crystal under environmental conditions, leading a rapid decline in fluorescence efficiency. Here, we report method which trioctylphosphine (TOP) directly serves as both surface ligand and solvent synthesize highly stable α-CsPbI3 (NRs). This approach produces monodisperse α-phase NRs with controlled sizes (1 μm 150 nm length, an aspect ratio 10:1), confirmed by high-resolution transmission electron microscopy (TEM) X-ray diffraction. The optimized exhibit high photoluminescence quantum yield around 80%, well excellent stability; after 15 days storage, (PLQY) retention is 90%. Transient absorption spectroscopy shows that carrier lifetime extended 23.95 ns 27.86 ns, attributed dual role TOP defect passivation hydrolysis suppression. work provides scalable paradigm stabilizing metastable nanostructures through rational selection, paving way durable perovskite-based optoelectronics.

Язык: Английский

CsPbI3 Perovskite Nanorods: Enhancing Fluorescence Efficiency and Environmental Stability via Trioctylphosphine Ligand Coordination DOI Open Access

Chengqi Liu,

Z.A.Y. Abdalla, Xiaoqian Wang

и другие.

Materials, Год журнала: 2025, Номер 18(7), С. 1518 - 1518

Опубликована: Март 28, 2025

Metal halide perovskite nanorods hold great promise for optoelectronic applications. However, they tend to undergo phase transitions due the instability of crystal under environmental conditions, leading a rapid decline in fluorescence efficiency. Here, we report method which trioctylphosphine (TOP) directly serves as both surface ligand and solvent synthesize highly stable α-CsPbI3 (NRs). This approach produces monodisperse α-phase NRs with controlled sizes (1 μm 150 nm length, an aspect ratio 10:1), confirmed by high-resolution transmission electron microscopy (TEM) X-ray diffraction. The optimized exhibit high photoluminescence quantum yield around 80%, well excellent stability; after 15 days storage, (PLQY) retention is 90%. Transient absorption spectroscopy shows that carrier lifetime extended 23.95 ns 27.86 ns, attributed dual role TOP defect passivation hydrolysis suppression. work provides scalable paradigm stabilizing metastable nanostructures through rational selection, paving way durable perovskite-based optoelectronics.

Язык: Английский

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