Synthesis of Nanosized Luminescent Materials and Their Photoluminescence under VUV Excitation

Abstract

Photoluminescence (PL) phosphor can be divided into different types according to the different excitation wavelengths, and they have different applications. The region from 100 to 200 nm is the vacuum ultraviolet (VUV) region and the phosphors excited by VUV light are usually used for plasma display panels (PDPs) and Hg-free lamps.1 Nowadays, the PDP and liquid-crystal displays (LCDs) are the two most widely used techniques in flat panel display technology. Comparing with LCD, PDP display technique could provide rapider response of pictures, higher contrast and larger viewing angle.2 Hence, PDP is a promising candidate for the large flat-display industry, especially in 3D displays. Although PDP are currently available commercially, there are several disadvantages which limited its further application. First of all, PDP has lower luminescent efficiency (Tab. 1). Comparing with several common luminescence techniques, the luminescent efficiency of PDP is lowest.3