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Themed collection Singlet fission and photon upconversion

20 items
Review Article

Lanthanide upconversion luminescence at the nanoscale: fundamentals and optical properties

Upconversion photoluminescence is a nonlinear effect where multiple lower energy excitation photons produce higher energy emission photons.

Graphical abstract: Lanthanide upconversion luminescence at the nanoscale: fundamentals and optical properties
From the themed collection: Singlet fission and photon upconversion
Communication

Video-rate upconversion display from optimized lanthanide ion doped upconversion nanoparticles

A method for video-rate display with optimized single UCNP brightness by integrating the full emission intensity over excitation time and lifetime.

Graphical abstract: Video-rate upconversion display from optimized lanthanide ion doped upconversion nanoparticles
From the themed collection: Singlet fission and photon upconversion
Communication

Optimising FRET-efficiency of Nd3+-sensitised upconversion nanocomposites by shortening the emitter–photosensitizer distance

Nanocomposite NaYF4:Nd,Yb@Yb@Yb,Er@Y with Nd3+ in the core and Er3+ in the shell to shorten the emitter (Er3+)–photosensitizer distance to achieve better Förster resonance energy transfer (FRET) for better-performing photo-nanotheranostic materials.

Graphical abstract: Optimising FRET-efficiency of Nd3+-sensitised upconversion nanocomposites by shortening the emitter–photosensitizer distance
From the themed collection: Singlet fission and photon upconversion
Communication

Single-photon upconversion in 6-pentaceneone crystal from bulk to ultrathin flakes

Phonon-assisted single-photon upconversion was first discovered in a new 6-pentaceneone crystal, which can be mechanically exfoliated layer by layer.

Graphical abstract: Single-photon upconversion in 6-pentaceneone crystal from bulk to ultrathin flakes
Open Access Paper

Controlling the non-linear emission of upconversion nanoparticles to enhance super-resolution imaging performance

Convenient design of fully Yb-based upconversion nanoparticles enables control of their luminescence characteristics and enhances super-resolution imaging performance.

Graphical abstract: Controlling the non-linear emission of upconversion nanoparticles to enhance super-resolution imaging performance
From the themed collection: Recent Open Access Articles
Paper

Excitation efficiency determines the upconversion luminescence intensity of β-NaYF4:Er3+,Yb3+ nanoparticles in magnetic fields up to 70 T

We resolve a long standing discrepancy between various reports on the effect of the magnetic field on up-converted luminescence.

Graphical abstract: Excitation efficiency determines the upconversion luminescence intensity of β-NaYF4:Er3+,Yb3+ nanoparticles in magnetic fields up to 70 T
From the themed collection: Singlet fission and photon upconversion
Paper

Spectral characterization of LiYbF4 upconverting nanoparticles

In light of recent developments on Yb3+-based upconverting rare-earth nanoparticles (RENPs), we have systematically explored the spectral features of LiYbF4:RE3+/LiYF4 core/shell RENPs doped with various amounts of Tm3+, Er3+, or Ho3+.

Graphical abstract: Spectral characterization of LiYbF4 upconverting nanoparticles
From the themed collection: Singlet fission and photon upconversion
Paper

Photon upconversion-assisted dual-band luminescence solar concentrators coupled with perovskite solar cells for highly efficient semi-transparent photovoltaic systems

A photovoltaic system that combines photon upconversion-assisted luminescence solar concentrators and perovskite solar cells is demonstrated.

Graphical abstract: Photon upconversion-assisted dual-band luminescence solar concentrators coupled with perovskite solar cells for highly efficient semi-transparent photovoltaic systems
From the themed collection: Singlet fission and photon upconversion
Paper

Surface design of photon-upconversion nanoparticles for high-contrast immunocytochemistry

Streptavidin-PEG-neridronate-UCNP nanoconjugates enable the specific detection of tumor markers on the surface of cancer cells with outstanding signal-to-background ratio.

Graphical abstract: Surface design of photon-upconversion nanoparticles for high-contrast immunocytochemistry
From the themed collection: Singlet fission and photon upconversion
Paper

Five-photon absorption upconversion lasing from on-chip whispering gallery mode

We demonstrated for the first time low-threshold whispering-gallery mode upconversion lasing through five-photon absorption enhanced by on-chip microcavities at room temperature.

Graphical abstract: Five-photon absorption upconversion lasing from on-chip whispering gallery mode
From the themed collection: Singlet fission and photon upconversion
Paper

Light-harvesting porphyrazines to enable intramolecular singlet fission

Quantitative intramolecular FRET from a porphyrazine to pentacene enhances singlet fission with triplet quantum yields up to 200% ± 20% in benzonitrile.

Graphical abstract: Light-harvesting porphyrazines to enable intramolecular singlet fission
From the themed collection: Singlet fission and photon upconversion
Open Access Paper

Microlens array enhanced upconversion luminescence at low excitation irradiance

Microlens arrays are applied as spatial light modulators to manipulate the distribution of excitation light fields in order to overcome the high excitation-intensity threshold of upconversion nanoparticles, taking advantage of their nonlinear response to excitation irradiance.

Graphical abstract: Microlens array enhanced upconversion luminescence at low excitation irradiance
From the themed collection: Recent Open Access Articles
Paper

Exceptional modulation of upconversion and downconversion near-infrared luminescence in Tm/Yb-codoped ferroelectric nanocomposite by nanoscale engineering

Exceptional enhancement in both upconversion and downconversion near-infrared emission has been realized in the developed ferroelectric photonic nanocomposite.

Graphical abstract: Exceptional modulation of upconversion and downconversion near-infrared luminescence in Tm/Yb-codoped ferroelectric nanocomposite by nanoscale engineering
From the themed collection: Singlet fission and photon upconversion
Paper

The role of an inert shell in improving energy utilization in lanthanide-doped upconversion nanoparticles

Coating with an inert shell is considered an efficient approach for enhancing the emission and improving the luminescence quantum yield of lanthanide-doped upconversion nanoparticles.

Graphical abstract: The role of an inert shell in improving energy utilization in lanthanide-doped upconversion nanoparticles
From the themed collection: Singlet fission and photon upconversion
Paper

Singlet fission in self-assembled PDI nanocrystals

Upon photoexcitation, self-assembled PDI nanocrystals (S1S0) in the form of rods of 70 nm width and 1 μm length are subject to a symmetry breaking charge separation (SBCS) as the first step in the singlet fission (SF) sequence.

Graphical abstract: Singlet fission in self-assembled PDI nanocrystals
From the themed collection: Singlet fission and photon upconversion
Paper

Thermoplasmonic enhancement of upconversion in small-size doped NaGd(Y)F4 nanoparticles coupled to gold nanostars

Feeling the plasmonic heat: the photothermal effect in gold nanostars enhances the emission intensity of small-size upconverting nanocrystals.

Graphical abstract: Thermoplasmonic enhancement of upconversion in small-size doped NaGd(Y)F4 nanoparticles coupled to gold nanostars
From the themed collection: Singlet fission and photon upconversion
Paper

Unravelling the energy transfer of Er3+-self-sensitized upconversion in Er3+–Yb3+–Er3+ clustered core@shell nanoparticles

The interplay on enhancing and quenching effects between Er3+ and Yb3+ dopant clusters in self-sensitized core@shell nanoparticles is studied.

Graphical abstract: Unravelling the energy transfer of Er3+-self-sensitized upconversion in Er3+–Yb3+–Er3+ clustered core@shell nanoparticles
From the themed collection: Singlet fission and photon upconversion
Paper

A core–multiple shell nanostructure enabling concurrent upconversion and quantum cutting for photon management

Photon management enables the manipulation of the number of input photons by conversion of two or more light quanta into one (upconversion) or vice versa (quantum cutting).

Graphical abstract: A core–multiple shell nanostructure enabling concurrent upconversion and quantum cutting for photon management
From the themed collection: Singlet fission and photon upconversion
Paper

Revisiting the optimized doping ratio in core/shell nanostructured upconversion particles

The development of rare-earth doped upconversion nanoparticles (RE-UCNPs) in various applications is fuelling the demand for nanoparticles with highly enhanced upconversion luminescence (UCL).

Graphical abstract: Revisiting the optimized doping ratio in core/shell nanostructured upconversion particles
From the themed collection: Singlet fission and photon upconversion
Open Access Paper

Nonlinear spectral and lifetime management in upconversion nanoparticles by controlling energy distribution

A method is delineated for the management of nonlinear spectral profile and luminescence lifetime in upconversion nanoparticles by manipulating the energy distributors.

Graphical abstract: Nonlinear spectral and lifetime management in upconversion nanoparticles by controlling energy distribution
From the themed collection: Singlet fission and photon upconversion
20 items

About this collection

Singlet fission and photon upconversion are two photochemical processes. Singlet fission is the process of splitting one excited state into two exited triplets and charge carrier states. Photon upconversion combines two low energy photons into one high energy photon.

This article collection highlights some of the most recent articles in Nanoscale on singlet fission and photon upconversion. In partnership with our sister journal, Journal of Materials Chemistry C, we will be running an RSC Desktop Seminar on this very topic. Learn more here.

Want to read more? Check out this Editor’s Choice collection with Professor Kasper Moth-Poulsen (Chalmers University of Technology, Sweden).

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