Opportunities for enhancing solar energy harvesting using photon upconversion are
reviewed. The increasing prominence of bifacial solar cells is an enabling factor for the …

All photovoltaic solar cells transmit photons with energies below the absorption threshold
(bandgap) of the absorber material, which are therefore usually lost for the purpose of solar …

Upconversion of low‐energy photons into high‐energy photons increases the efficiency of
photovoltaic devices by converting photons with energies below the absorption threshold of …

Upconverting nanoparticles (UCNPs) are well-known for their capacity to convert near-
infrared light into UV/visible light, benefitting various applications where light triggering is …

Up-conversion (UC) of near-infrared radiation to visible light has received much attention
because of its use in the conversion of solar radiation, luminescence thermometry …

The nitrogen‐deficient graphitic carbon nitride (g‐C3N4) has been prepared, a new excited
state absorption (ESA) up‐conversion mode is discovered, which is directly induced by …

Advancing the upconversion materials field relies on accurate and contrastable
photoluminescence efficiency measurements, which are characterised by the absolute …

The demand for more efficient and complete sorting techniques for plastic waste is growing,
and one possible solution isbased on fluorescent labeling. Novel fluorescent labels based …

Abstract Er 3+/Yb 3+ codoped zincate BaGd 2 ZnO 5 phosphors were synthesized via a
traditional solid state reaction. The crystal structure and phase purity were checked by …

Efficient single-band NIR-to-NIR upconversion (UC) emission is strongly desired for many
applications such as fluorescent markers, plastic recycling, and biological imaging. Herein …