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Updated: Jan 29, 2026

Production and Targeting of Monovalent Quantum Dots
Published on: October 23, 2014
Functionalized SBA-15 as a protective template for CsPbBr3 perovskite quantum dots
M P Athira1, Suja Haridas1,2
1Department of Applied Chemistry, Cochin University of Science and Technology Kochi Kerala India sujaharidas@cusat.ac.in.
Abstract:
All-metal halide perovskite quantum dots (QDs), such as CsPbBr3 (CPB), exhibit outstanding optoelectronic properties, but their poor thermal stability limits practical applications. In this work, CPB QDs were embedded into mesoporous SBA-15 silica matrices functionalized with amino (NH2) and sulfonic acid (SO3H) groups to enhance stability. The SBA-15 host, synthesized hydrothermally and post-functionalized, offers high thermal and chemical resilience. CPB QDs prepared via hot-injection retained their optical features upon incorporation, with consistent photoluminescence and absorption spectra. Structural analysis confirmed uniform QD loading (∼17 nm) within the pores. Among all supports, SO3H-functionalized SBA-15 provided the greatest stability improvement, attributed to strong interactions with surface ligands. This approach presents a viable pathway for stabilizing perovskite QDs in optoelectronic applications.
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