ArticleJournal of the American Chemical Society2021
Toward Bright Mid-Infrared Emitters: Thick-Shell n-Type HgSe/CdS Nanocrystals.
Article in Journal of the American Chemical Society, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Engineering Polarons for Circumventing Energy Gap Law: Nd-doped CdTe Quantum Dots With High-efficiency Emission at 1730 nm for NIR-IIb/c Bioimaging.Advanced materials (Deerfield Beach, Fla.) · 2026Article
- Nanoscale greenhouse effect for promoting solar-driven CONature communications · 2026Article
- Interfacial engineering with chemical bath deposition for high-performance HgTe quantum dot-based short-wave infrared photodetectors.Nano convergence · 2025Article
- Intraband Exciton Dynamics of n-Doped Silver Selenide Quantum Dots.Nano letters · 2024Article
- Interdiffusion-enhanced cation exchange for HgSe and HgCdSe nanocrystals with infrared bandgaps.Nature synthesis · 2024Article
- Multinary light absorbing semiconductor nanocrystals with diversified electronic and optical properties.Nanoscale advances · 2024Article
- Dual-plasmonic Au@CuNature communications · 2024Article
- Mercury Chalcogenide Colloidal Quantum Dots for Infrared Photodetectors.Materials (Basel, Switzerland) · 2023Review
- The Historical Development of Infrared Photodetection Based on Intraband Transitions.Materials (Basel, Switzerland) · 2023Review
Corrections and comments
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
A procedure is developed for the growth of thick, conformal CdS shells that preserve the optical properties of 5 nm HgSe cores. The n-doping of the HgSe/CdS core/shell particles is quantitatively tuned through a simple postsynthetic Cd treatment, while the doping is monitored via the intraband optical absorption at 5 μm wavelength. Photoluminescence lifetime and quantum yield measurements show that the CdS shell greatly increases the intraband emission intensity. This indicates that decoupling the excitation from the environment reduces the nonradiative recombination. We find that weakly n-type HgSe/CdS are the brightest solution-phase mid-infrared chromophores reported to date at room temperature, achieving intraband photoluminescence quantum yields of 2%. Such photoluminescence corresponds to intraband lifetimes in excess of 10 ns, raising important questions about the fundamental limits to achievable slow intraband relaxation in quantum dots.
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Registered trials
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