RT journal article
T1 N-/Si-co-doped nanocrystalline diamonds as highly sensitive luminescent thermometers
A1 Rodríguez Fernández, María Isabel
A1 Gragera García, María
A1 Carrillo Berdugo, Iván
A1 Alcántara Puerto, Rodrigo
A1 Pobedinskas, Paulius
A1 Haenen, Ken
A1 Alba Muñoz, Gonzalo
A1 Zorrilla Cuenca, David
A1 Navas Pineda, Francisco Javier
A2 Ingeniería en AutomáticaElectrónica, Arquitectura y Redes de Computadores
A2 Química Física
K1 Nanocrystals
K1 Plasma CVD
K1 Thermography (temperature measurement)
K1 Luminescence of inorganic solids
AB Diamonds can host a variety of luminescent point defects, such as nitrogen vacancies and silicon vacancies, making them remarkably promising materials for luminescence nanothermometry. They also exhibit desirable characteristics, including low cytotoxicity, good biocompatibility and the benefits of carbon chemistry for tuneable surface functionalization with target molecules. In this work, N-/Si co-doped nanocrystalline diamonds were synthesized via microwave plasma-enhanced chemical vapor deposition under varying methane flow and temperature conditions, aiming for maximum photoluminescence intensity. In-depth analysis of the luminescence characteristics of NV− and SiV− emitting point defects with temperature, based on both experiments and ab initio calculations, suggested the existence of thermal coupling between their states. This coupling enabled ratiometric approaches to be exploited for more sensitive luminescent thermometry. A maximum thermal relative sensitivity of 5.5% K−1 was achieved. This is remarkable for in vitro temperature measurements of biological tissues.
PB Royal Society of Chemistry
SN 2040-3372
YR 2025
FD 2025
LK http://hdl.handle.net/10498/38006
UL http://hdl.handle.net/10498/38006
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 09-nov-2026