Over a thousand-fold enhancement of the spontaneous emission rate for stable core-shell perovskite quantum dots through coupling with novel plasmonic nanogaps.

ABSTRACT: High Purcell enhancement structures and stable emitters are essential prerequisites for the successful development of novel fast-operating active devices. Furthermore, a uniform enhancement of the spontaneous emission rate is critical for practical applications. Despite considerable efforts being made to meet these requirements, achieving them still remains a challenging task. In this work, we demonstrate that placing stable core-shell perovskite quantum dots (PQDs) in the nanogap region of hole/sphere-based nanogap structures (HSNGs) can enhance the spontaneous emission rate by more than a thousand-fold (up to a factor of ∼1080) compared to PQDs in solution. This enhancement factor is the highest value reported using PQDs, exceeding previously reported values by two orders of magnitude. N

SUBMITTER: Silalahi VC 

PROVIDER: S-EPMC11501862 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature