Solid laser lighting with high photoelectric conversion efficiency and compact size has been increasingly vital in lighting applications. Extensive research has been conducted to obtain high-quality color converters for application to high-power and high-luminance laser lighting. Currently, Y3Al5O12:Ce3+ phosphor in glass (Ce:PiG) and Y3Al5O12:Ce3+ phosphor-in-glass film (Ce:PiF) possessing high efficiency, low cost, easy fabrication, and controllable chromaticity are becoming the most mainstream research directions. In this study, by modifying the glass particle size and sintering temperature, investigating the relevant host glass, and so forth, high-performance Ce:PiG was developed through a one-step co-sintering technology. It possesses a high internal quantum efficiency, approaching 100% of the original phosphors (92.5%). The luminous efficacy (LE) of the Ce:PiG was 240 lm/W at 2.18 W/mm2 under 450 nm blue laser diode (LD) excitation, which is the best result yet reported. Furthermore, to enhance the laser saturation threshold, the fabricated Ce:PiF relying on a sapphire substrate can withstand an 8 W/mm2 blue incident power density. The obtained sample can even reach an LE of 251.5 lm/W, which is an obvious improvement to Ce:PiG. In addition, the result, an LD module combined with the sample that meets the standard white light source, indicates that this work has good prospects for white laser lighting.

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The modular LD was packaged with a YAGG:Ce PiG prototype with bright green light observed, which provides a new possibility for long-term and stable LDs.

A highly sensitive and selective resonance scattering spectral assay was proposed for the determination of horseradish peroxidase (HRP), based on its catalytic effect on the H2O2 oxidation of KI to form I3(-). The I3(-) combined respectively with rhodamine (Rh) dye such as rhodamine S (RhS), rhodamine 6G (Rh6G), rhodamine B (RhB) and butyl-rhodamine B (b-RhB), to form association particles (Rh-I3(n). The four Rh systems all exhibit a stronger resonance scattering (RS) peak at 424 nm. For the RhS, Rh6G, RhB and b-RhB systems, HRP concentration in the range of 3.2 x 10(-12) to 4.8 x 10(-9), 2 x 10(-11) to 3.2 x 10(-9), 1.6 x 10(-11) to 3.2 x 10(-9) and 1.6 x 10(-11) to 4 x 10(-9) g/mL was linear to its RS intensity at 424 nm, with a detection limit of 2.2 x 10(-12), 2.5 x 10(-12), 4.4 x 10(-12) and 2.6 x 10(-12 )g/mL, respectively. This RhS system was most sensitive and stable, and was applied for the determination of HRP in the hepatitis B surface antibody labeling HRP and water samples, with satisfactory results.

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