Transition-metal activated phosphors are an important family of luminescent materials that
can produce white light with an outstanding color rendering index and correlated color …

Phosphor converted white light-emitting diodes (pc-WLEDs) are an alternative choice for
general lighting due to their superior features such as high efficiency, durability and …

New non-rare-earth-based oxide red phosphor discovery is of great interest in the field of
energy-efficient LED lighting. In this work, a novel blue-light activated CaMg2Al16O27 …

Owing to its low cost and admirable luminescent characteristics for use in warm white-light-
emitting diode (w-LED) applications, the non-rare-earth Mn4+-activated red phosphor has …

Red phosphors play an indispensable role in phosphor-based warm white light-emitting
diodes (WLEDs). We demonstrated recently that the non-rare-earth phosphor Sr4Al14O25 …

The exploration of new red phosphor based on rare-earth free ion activated oxide is of great
practical value in the field of phosphors converted white light-emitting diode (w-LED) …

In this paper we review the spectroscopic properties of the Mn 4+ ion (3d 3 electronic
configuration) and establish a relationship between the energy of the 2 E g→ 4 A 2g …

Currently, the major commercial white light-emitting diodes consist of a blue-emitting chip
and Y3Al5O12: Ce3+ yellow phosphor. However, the shortage of a red emitting component …

In this paper we review the spectroscopic properties of three transition metal ions-Mn 4+, Cr
3+ and Ni 2+-in crystals and establish a relationship between the energies of the lowest in …

A review of the optical properties of Mn4+ ions in a number of host lattices is presented. As
an example, detailed crystal field calculations of the Mn4+ energy levels in Na2SiF6 and …