Photovoltaic (PV) technologies for solar energy conversion represent promising routes to
green and renewable energy generation. Despite relevant PV technologies being available …

Before the 1960s, all anti-Stokes emissions, which were known to exist, involved emission
energies in excess of excitation energies by only a few kT. They were linked to thermal …

The use of lanthanide ions to convert photons to different, more useful, wavelengths is well-
known from a wide range of applications (eg fluorescent tubes, lasers, white light LEDs) …

Luminescent materials with the quantum efficiency (QE) higher than unity could be playing a
significant role in the progress of lighting industry and certain electronic display systems …

Exploring highly efficient near-infrared (NIR) emitting materials is desirable for the
advancement of next-generation smart NIR light sources. Different from most reported Cr3+ …

A down-converting (DC) layer placed on the front side of a silicon solar cell has the potential
to generate more than one low-energy photon for every incident high-energy photon. Recent …

This paper discusses ways of reducing the two major losses encountered in a single-
junction photovoltaic (PV) device—that of sub-band gap transmission and lattice …

We present experimental evidence for cooperative energy transfer from Tb 3+ to two Yb 3+
ions and a determination of the energy-transfer rate. Energy transfer from Tb 3+ to Yb 3+ …

This paper discusses lanthanide doped luminescent materials which can modify the solar
spectrum to reduce the spectral losses encountered by PV (photovoltaic) devices and …

In Ce 3+–Yb 3+ co-doped Y 3 Al 5 O 12 (YAG) ceramics, possibility of quantum cutting
mechanism converting one visible photon into two NIR photons with optimum quantum …