Cd3P2/Zn3P2 Core-Shell Nanocrystals: Synthesis and Optical Properties

Benjamin F P Mcvey (1) , Robert A Swain (1) , Delphine Lagarde (1) , Wilfried-Solo Ojo (1) , Kaltoum Bakkouche , Cécile Marcelot (2) , Bénédicte Warot-Fonrose (2) , Yann Tison (3) , Hervé Martinez (3) , Bruno Chaudret (1) , Céline Nayral (1) , Fabien Delpech (1)

1 LPCNO - Laboratoire de physique et chimie des nano-objets
2 CEMES - Centre d'élaboration de matériaux et d'études structurales
3 IPREM - Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux

II–V semiconductor nanocrystals such as Cd3P2 and Zn3P2 have enormous potential as materials in next-generation optoelectronic devices requiring active optical properties across the visible and infrared range. To date, this potential has been unfulfilled due to their inherent instability with respect to air and moisture. Core-shell system Cd3P2/Zn3P2 is synthesized and studied from structural (morphology, crystallinity, shell diameter), chemical (composition of core, shell, and ligand sphere), and optical perspectives (absorbance, emission-steady state and time resolved, quantum yield, and air stability). The improvements achieved by coating with Zn3P2 are likely due to its identical crystal structure to Cd3P2 (tetragonal), highlighting the key role crystallographic concerns play in creating cutting edge core-shell NCs

Mots clés: nanocrystal; core-shell nanostructure; cadmium phosphide; zinc phosphide; synthesis; shelling; quantum dots

Domaines: Chimie analytique; Matériaux

Benjamin F P Mcvey, Robert A Swain, Delphine Lagarde, Wilfried-Solo Ojo, Kaltoum Bakkouche, et al.. Cd3P2/Zn3P2 Core-Shell Nanocrystals: Synthesis and Optical Properties. Nanomaterials, 2022, 12, ⟨10.3390/nano12193364⟩. ⟨hal-03836208⟩