Publications de Jean-Claude Bünzli

Phosphor-converted light-emitting diodes in the marine environment: current status and future trends

The exploitation and utilization of resources in marine environments have ignited a demand for advanced illumination and optical communication technologies. Light-emitting diodes (LEDs), heralded as "green lighting sources", offer a compelling solution to ...

ROYAL SOC CHEMISTRY2025

Valence and Site Engineering Enable Efficient Broadband Near‐Infrared Emission at 960 nm in Cr3+‐Activated Forsterite

Jean-Claude Bünzli

Near‐infrared (NIR) light sources hold great potential for applications in night vision illumination, bio‐imaging, and non‐destructive testing. However, radiationless de‐activation and low absorption restrict the development of high‐efficiency blue light e ...

Wiley2025

Single-Grain High-Efficiency Full-Visible-Spectrum White Emitters

Jean-Claude Bünzli

Full-visible-spectrum emission phosphors are promising candidates for next-generation white light-emitting diodes (WLEDs), overcoming the complex and high costs of traditional mixed phosphors. However, their practical application is hindered by low lumines ...

WILEY-V C H VERLAG GMBH2025

Achieving Ultra-Broadband Sunlight-Like Emission in Single-Phase Phosphors: The Interplay of Structure and Luminescence

Jean-Claude Bünzli

The quest for artificial light sources mimicking sunlight has been a long-standing endeavor, particularly for applications in anticounterfeiting, agriculture, and color hue detection. Conventional sunlight simulators are often cost-prohibitive and bulky. T ...

Wiley2024

High-brightness transition metal-sensitized lanthanide near-infrared luminescent nanoparticles

Jean-Claude Bünzli

The demand for near-infrared (700–1,700 nm) materials in optical communications, laser sources and biological imaging applications has led to extensive research on lanthanide-doped nanoparticles, owing to their nanostructure modulation and interface proper ...

Nature Publishing Group2024

Shedding Light on Luminescence Lifetime Measurement and Associated Data Treatment

Jean-Claude Bünzli

Luminescence lifetime is a crucial parameter in photophysical studies that bears essential physical and chemical information and that is used to quantify a variety of phenomena, from the determination of quenching mechanisms to temperature sensing and bioi ...

WILEY2024

Symmetry and Rigidity for Boosting Erbium-Based Molecular Light-Upconversion in Solution

Jean-Claude Bünzli, Alexandre Fürstenberg

Previously limited to highly symmetrical homoleptic triple-helical complexes [Er(Lk)3]3+, where Lk are polyaromatic tridentate ligands, single-center molecular-based upconversion using linear optics and exploiting the excited-state absorption mechanism (ES ...

Wiley-VCH Verlag GmbH2023

Vitamin needed: Lanthanides in optoelectronic applications of metal halide perovskites

Jean-Claude Bünzli

Metal-halide perovskites-based optoelectronic devices, such as solar cells and light-emitting diodes (LEDs), are transitioning from promising performers to direct competitors to well-established technologies due to the advantage of cost-effectiveness. Pero ...

ELSEVIER SCIENCE SA2023

Multimodal Visualization of Bioorthogonal Systems by Off-On Luminescence and Enhanced Magnetic Resonance Imaging

Jean-Claude Bünzli

Bioorthogonal chemistry is a rising field investigating chemical reactions in physiological environments with high specificity. However, only very few examples concern the real-time monitoring of bioorthogonal reactions by luminescence or magnetic relaxivi ...

WILEY-V C H VERLAG GMBH2023

Structure, reactivity and luminescence studies of triphenylsiloxide complexes of tetravalent lanthanides

Jean-Claude Bünzli, Marinella Mazzanti, Farzaneh Fadaei Tirani, Anne-Sophie Chauvin, Aurélien René Willauer

Among the 14 lanthanide elements (Ce-Lu), until recently, the tetravalent oxidation state was readily accessible in solution only for cerium while Pr(iv), Nd(iv), Dy(iv) and Tb(iv) had only been detected in the solid state. The triphenylsiloxide ligand rec ...

2022