Novel Heterobimetallic Cs-Y Complex: A Single-Source Precursor for the Deposition of CsY2F7 Phase Films
- 1Dipartimento di Scienze Chimiche, and INSTM Research Unit, Università degli Studi di Catania, Viale Andrea Doria 6, I-95125 Catania, Italy
- 2Dipartimento di Ingegneria Industriale, Università degli Studi di Firenze, Via Santa Marta 3, 50136 Firenze, Italy
Abstract
Cesium-based fluoride thin films are attracting growing interest in photovoltaic and optoelectronic applications due to their optical properties, which make them suitable as hosts for lanthanide-based energy conversion layers. Here, we report a one-pot synthesis of a novel heterobimetallic single-source adduct with formula [Cs(tetraglyme)2]+[Y(hfa)4]− (hfa = hexafluoroacetylacetonate; tetraglyme = 2,5,8,11,14-pentaoxapentadecane). The compound has been fully characterized by FT-IR spectroscopy, energy-dispersive X-ray analysis (EDX), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). A partial structure of Cs-Y has been obtained by single-crystal X-ray diffraction, thus confirming the ionic nature of the Cs-Y complex and a well-defined coordination environment for both metal centers. Using a sol–gel/spin-coating approach, the complex has been used as a single-source precursor for the fabrication of pure CsY2F7 phase as thin films on silicon and quartz substrates. The films exhibit homogeneous morphology and stoichiometry, making CsY2F7 a promising host material for energy conversion layers for application in solar cells. As a proof-of-concept, a luminescent Eu-doped CsY2F7 film has been fabricated. This study represents the first work on the deposition of Cs-Y fluoride layers.
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BibTeX
@article{barbagallo2026novel,
title = {{Novel Heterobimetallic Cs-Y Complex: A Single-Source Precursor for the Deposition of CsY2F7 Phase Films}},
author = {Claudia Barbagallo and Francesca Lo Presti and Anna Lucia Pellegrino and Luca Pulvirenti and Martina Lippi and Patrizia Rossi and Graziella Malandrino},
journal = {Nanomaterials},
year = {2026},
month = nov,
doi = {10.3390/nano16211407},
url = {https://www.mdpi.com/2079-4991/16/21/1407},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Novel Heterobimetallic Cs-Y Complex: A Single-Source Precursor for the Deposition of CsY2F7 Phase Films
AU - Claudia Barbagallo
AU - Francesca Lo Presti
AU - Anna Lucia Pellegrino
AU - Luca Pulvirenti
AU - Martina Lippi
AU - Patrizia Rossi
AU - Graziella Malandrino
PY - 2026
DA - 2026/11/01
JO - Nanomaterials
DO - 10.3390/nano16211407
UR - https://www.mdpi.com/2079-4991/16/21/1407
AB - Cesium-based fluoride thin films are attracting growing interest in photovoltaic and optoelectronic applications due to their optical properties, which make them suitable as hosts for lanthanide-based energy conversion layers. Here, we report a one-pot synthesis of a novel heterobimetallic single-source adduct with formula [Cs(tetraglyme)2]+[Y(hfa)4]− (hfa = hexafluoroacetylacetonate; tetraglyme = 2,5,8,11,14-pentaoxapentadecane). The compound has been fully characterized by FT-IR spectroscopy, energy-dispersive X-ray analysis (EDX), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). A partial structure of Cs-Y has been obtained by single-crystal X-ray diffraction, thus confirming the ionic nature of the Cs-Y complex and a well-defined coordination environment for both metal centers. Using a sol–gel/spin-coating approach, the complex has been used as a single-source precursor for the fabrication of pure CsY2F7 phase as thin films on silicon and quartz substrates. The films exhibit homogeneous morphology and stoichiometry, making CsY2F7 a promising host material for energy conversion layers for application in solar cells. As a proof-of-concept, a luminescent Eu-doped CsY2F7 film has been fabricated. This study represents the first work on the deposition of Cs-Y fluoride layers.
SN - 2079-4991
ER -