Impurity doping is a promising method to impart new properties to various materials. Due to
their unique optical, magnetic, and electrical properties, rare-earth ions have been …

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

Lanthanide-based upconversion nanomaterials have recently attracted considerable
attention in both fundamental research and various frontier applications owing to their …

Smart control of photon upconversion is a key strategy for lanthanide-based materials used
in biological and photonic applications. However, this has remained a challenge for the …

Luminescence-based techniques continue to attract considerable attention due not only to
their current range of applications but also to their wide potential in the fields of optical …

Presently, phosphors and luminescent materials for lighting, telecommunications, displays,
security inks and marking, as well as for probes in biosciences represent one third of the …

Lanthanide-doped upconversion (UC) phosphors absorb low-energy infrared light and
convert it into higher-energy visible light. Despite over 10 years of development, it has not …

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 …

The spectral mismatch between solar cells and incident radiation is a fundamental factor
limiting their efficiencies. There exist materials and luminescent processes which can modify …

The ability to upconvert two low energy photons into one high energy photon has potential
applications in solar energy, biological imaging, and data storage. In this Letter, CdSe and …