Abstract
Producing white light using near-UV LEDs requires the development of new phosphors, as well as the modification of certain existing ones. In this review, we discuss the luminescent properties of potential phosphors: oxides, silicates, phosphates and nitrides. We evaluate phosphors that employ 4f-5d transitions, line emission, the use of sensitizers and transition metal elements. We include information on the optical transitions and how these can limit the selection of a composition.
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