Journal ArticleDOI
Electronic Energy Transfer in CdSe Quantum Dot Solids
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TLDR
Electronic energy transfer between close packed quantum dots using cw and time resolved photoluminescence is demonstrated and is consistent with long-range resonance transfer of electronic excitations from the more electronically confined states of the small dots to the higher excitedStates of the large dots.Abstract:
We demonstrate electronic energy transfer between close packed quantum dots using cw and time resolved photoluminescence. Optically clear and thin, close packed quantum dot solids were prepared from mixtures of small and large CdSe quantum dots (38.5 and 62 \AA{}, $\ensuremath{\sigma}l4.5%$). Quenching of the luminescence (lifetime) of the small dots accompanied by enhancement of the luminescence (lifetime) of the large dots is consistent with long-range resonance transfer of electronic excitations from the more electronically confined states of the small dots to the higher excited states of the large dots.read more
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Journal ArticleDOI
Spectroscopy of GaSe Nanoparticle Aggregates
TL;DR: In this paper, the concentration-dependent spectroscopic characteristics of GaSe nanoparticles are interpreted in terms of the particles forming strongly interacting aggregates in high-concentration, room-temperature solutions.
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Pure white hybrid light-emitting device with color rendering index higher than 90.
TL;DR: A pure white hybrid light-emitting device combining a deep-blue emission from a polymer with blue, green, and red emissions from ternary CdSe/ZnS quantum dots is reported on.
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Suppressing Strong Exciton-Phonon Coupling in Blue Perovskite Nanoplatelet Solids by Binary Systems.
Shaomin Peng,Qi Wei,Bingzhe Wang,Zhipeng Zhang,Yang Hongcheng,Guotao Pang,Kai Wang,Guichuan Xing,Xiao Wei Sun,Zikang Tang +9 more
TL;DR: Top-up fabricated blue emissive perovskite nanoplatelets (NPLs) are adopted as model systems to elucidate and as well as tune the phonon interactions via engineering of binary NPL solids for high-performance excitonic optoelectronics.
Journal ArticleDOI
Semiconductor quantum dot mixture as a lossless negative dielectric constant optical material
Kevin J. Webb,Alon Ludwig +1 more
TL;DR: In this article, a mixture of two semiconductor quantum dots can produce an isotropic effective dielectric constant that is lossless and negative, which can be used to achieve lossless metal-insulator optical waveguides.
Journal ArticleDOI
Energy transfer and polarized emission in cadmium selenide nanocrystal solids with mixed dimensionality
TL;DR: In this paper, a simple rubbing technique was used to uniaxially align the quantum rods dispersed in thin films of quantum dots, which resulted in a predominant red fluorescence in mixed films.