Role of precursor concentrations on the formation of ternary Pb1−Sr Se QDs in silicate glasses

Liu, Yingrui; Li, Xiaochun; Su, Yong; Wang, Jing; Shao, Xin; Zhang, Wei; Han, Jianjun; Liu, Chao; Ruan, Jian; Kong, Xianghang

doi:10.1016/j.mseb.2021.115066

Cited by 1 publication

(1 citation statement)

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“…For a long time, the incorporation of semiconductor nanocrystals into various types of glass was performed through the thermal development from precursors added to the matrix 43 – 45 . However, this resulted in the generation of QDs with an inhomogeneous size distribution, which impeded their utility in the fabrication of high-performance optical components.…”

Section: Introductionmentioning

confidence: 99%

Ultrafast photoluminescence and multiscale light amplification in nanoplasmonic cavity glass

Piotrowski,

Buza,

Nowaczyński

et al. 2024

Nat Commun

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Interactions between plasmons and exciton nanoemitters in plexcitonic systems lead to fast and intense luminescence, desirable in optoelectonic devices, ultrafast optical switches and quantum information science. While luminescence enhancement through exciton-plasmon coupling has thus far been mostly demonstrated in micro- and nanoscale structures, analogous demonstrations in bulk materials have been largely neglected. Here we present a bulk nanocomposite glass doped with cadmium telluride quantum dots (CdTe QDs) and silver nanoparticles, nAg, which act as exciton and plasmon sources, respectively. This glass exhibits ultranarrow, FWHM = 13 nm, and ultrafast, 90 ps, amplified photoluminescence (PL), λem≅503 nm, at room temperature under continuous-wave excitation, λexc = 405 nm. Numerical simulations confirm that the observed improvement in emission is a result of a multiscale light enhancement owing to the ensemble of QD-populated plasmonic nanocavities in the material. Power-dependent measurements indicate that >100 mW coherent light amplification occurs. These types of bulk plasmon-exciton composites could be designed comprising a plethora of components/functionalities, including emitters (QDs, rare earth and transition metal ions) and nanoplasmonic elements (Ag/Au/TCO, spherical/anisotropic/miscellaneous), to achieve targeted applications.

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Section: Introductionmentioning

confidence: 99%