Enhanced Performance of CsPbBr3 Nanocrystals via Dual Passivation DOI Creative Commons

Yujiao Sun,

Yongchao Cheng,

Zi‐Jiang Yang

et al.

Advanced Materials Interfaces, Journal Year: 2024, Volume and Issue: 11(32)

Published: Aug. 15, 2024

Abstract Perovskite CsPbBr 3 nanocrystals show excellent optical properties. However, the encounter a major challenge of poor stability. In this study, an effective approach is proposed for enhancing stability via dual passivation strategy, where layer composed alumina (Al 2 O ) and polymer ethylene‐vinyl acetate (EVA). The Al coating on surface realized by in situ oxidation trimethyl aluminum (TMA), which passivated defects while blocking intrusion water oxygen. EVA film formed solution method, can further block oxygen, form flexible composite with perovskite enhanced toward heat. After soaking 360 h heating 5 h, photoluminescence (PL) intensity higher than that without passivation. packaging strategy provided extensibility flexibility at 100% 200% tensile rates, PL remains 91% 88% initial intensity, returns to value after stretching. unique dual‐protection structure significantly improves thermal nanocrystals. might point out direction future application perovskites.

Language: Английский

Guest-Molecule-Induced Glass-Crystal Transition in Organic–Inorganic Hybrid Antimony Halides DOI

Xuexia Lu,

Yang‐Peng Lin, Zhen Liu

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 18, 2025

The glassy state of inorganic-organic hybrid metal halides combines their excellent optoelectronic properties with the outstanding processability glass, showcasing unique application potential in solar devices, display technologies, and plastic electronics. Herein, by tailoring organic cation from N-phenylpiperazine to dimethylamine gradually, four types zero-dimensional antimony are obtained various optical thermal properties. guest water molecules crystal (N-phenylpiperazine)2SbCl6·Cl·5H2O lead largest distortion Sb-halogen unit, resulting red emission different yellow other compounds. More importantly, molecule-induced hydrogen-bond network would prolong relaxation time into an equilibrium state, formation state. This is previous strategy adopting large cations for glass transition. Through rheological studies, we shape initial understanding underlying kinetics halide glass. work provides a simpler more convenient approach developing superior processing performance.

Language: Английский

Citations

0
Thermally Activated Delayed Fluorescence of Organic–Inorganic Hybrid Menshutkin-Type Cu–Sb Halides DOI

Yitong Lin,

Yang‐Peng Lin, Hao-Wei Lin

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 19, 2025

Organic-inorganic hybrid metal halides have attracted much attention due to their excellent optoelectronic properties. The heterometallic structure is expected achieve more complex luminescence centers, thereby improving the tunability of fluorescent materials. This paper reports synthesis crystals [Cu(2,2'-bpy)(PPh3)2][CuCl2(PPh3)2Sb2OCl4] (1, 2,2'-bpy = 2,2'-bipyridine, PPh3 triphenylphosphine) and (Mim)2[Sb2OCl6] (2, Mim 1-methylimidazole). Crystal 1 a new Menshutkin-type compound with double-layer hamburger-type structure, which characterized by main group (lone pair)···π (arene) supramolecular interactions. shows bright yellow light emission at room temperature has thermally activated delayed fluorescence (TADF) characteristic than twice increase PL intensity from 170 320 K. crystal arises charge transfer cation unit, as confirmed comparison study 2. Density functional theory (DFT) calculations further clarify that enhanced performance narrower bandgap are additional Cu(I) unit. good thermal stability air stability, ensuring its anti-counterfeiting application. work provides strategy for construction Cu-Sb compound.

Language: Английский

Citations

0
High Resistivity of Single Crystal CsPbBr3 Semiconductor for Radiation Detection via Proposed Temperature‐Concentration Balance Method DOI Creative Commons
X.D. Zhang,

Qingbo Wang,

Ying Gao

et al.

Advanced Electronic Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 16, 2025

Abstract Lead halide perovskites have shown high performance in radiation detection techniques owing to their excellent optoelectronic properties and stability. However, the resistivity of CsPbBr 3 detector is intensively dependent on growth quality single crystal, which closely related temperature gradients or introduction additives. Herein, a crystal with grown based proposed temperature‐concentration balance (TCB) method. The prepared perfect remains repeated experiments, belongs Pnma space group, benefiting from effective Based fabricated asymmetrical Au‐In electrodes demonstrates outstanding linearity under reverse bias. It exhibits lower dark current (2.66 × 10 −2 nA) resistivity, helps acquire broader measurement range. Moreover, emission spectrum crystals sharp peak at 527 nm narrower full width half maximum, making easily couple into detectors. These findings provide insight regulation for more extensive applications future.

Language: Английский

Citations

0
Constructing Pb-O bonds to trigger efficient cross-scale charge transfer for high-performance electromagnetic wave absorption and multicolor conversion DOI
Jie Huang,

Lingjie Hu,

Liuying Wang

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 159004 - 159004

Published: Dec. 1, 2024

Language: Английский

Citations

1
Large-area in situ growth of a flexible perovskite scintillator film for X-ray indirect detection applications DOI
Hongyu Lv,

Qun Hao,

Naiquan Yan

et al.

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: 12(24), P. 8970 - 8976

Published: Jan. 1, 2024

A large-area ultra-stable in situ grown vitamin-doped perovskite film and its application X-ray photodetection.

Language: Английский

Citations

1
Enhanced Performance of CsPbBr3 Nanocrystals via Dual Passivation DOI Creative Commons

Yujiao Sun,

Yongchao Cheng,

Zi‐Jiang Yang

et al.

Advanced Materials Interfaces, Journal Year: 2024, Volume and Issue: 11(32)

Published: Aug. 15, 2024

Abstract Perovskite CsPbBr 3 nanocrystals show excellent optical properties. However, the encounter a major challenge of poor stability. In this study, an effective approach is proposed for enhancing stability via dual passivation strategy, where layer composed alumina (Al 2 O ) and polymer ethylene‐vinyl acetate (EVA). The Al coating on surface realized by in situ oxidation trimethyl aluminum (TMA), which passivated defects while blocking intrusion water oxygen. EVA film formed solution method, can further block oxygen, form flexible composite with perovskite enhanced toward heat. After soaking 360 h heating 5 h, photoluminescence (PL) intensity higher than that without passivation. packaging strategy provided extensibility flexibility at 100% 200% tensile rates, PL remains 91% 88% initial intensity, returns to value after stretching. unique dual‐protection structure significantly improves thermal nanocrystals. might point out direction future application perovskites.

Language: Английский

Citations

0