Deposition of CdSe Nanocrystals in Highly Porous SiO₂ Matrices-In Situ Growth vs. Infiltration Methods.

ABSTRACT: Embedding quantum dots into porous matrices is a very beneficial approach for generating hybrid nanostructures with unique properties. In this contribution we explore strategies to dope nanoporous SiO₂ thin films made by atomic layer deposition and selective wet chemical etching with precise control over pore size with CdSe quantum dots. Two distinct strategies were employed for quantum dot deposition: in situ growth of CdSe nanocrystals within the porous matrix via successive ionic layer adsorption reaction, and infiltration of pre-synthesized quantum dots. To address the impact of pore size, layers with 10 nm and 30 nm maximum pore diameter were used as the matrix. Our results show that though small pores are potentially accessible for the in situ approach, this strategy lacks

SUBMITTER: Baruah R 

PROVIDER: S-EPMC11396508 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature