Recently, high-performance color converters excitable by blue laser diode (LD) have sprung up for projection displays. However, the thermal accumulation effect of the color converters is a non-negligible problem under high-power LD irradiation. Herein, we developed novel opto-functional composites (patterned CaAlSiN₃:Eu²⁺ phosphor-in-glass film–Y₃Al₅O₁₂:Ce³⁺ phosphor-in-glass film@Al₂O₃ plate with aluminum "heat sink" ) via a thermal management methodology of combining "phosphor wheel" and "heat sink" for a lighting source of highpower laser projection displays. This new composite design makes it effective to transport generated thermal phonons away to reduce the thermal ionization process, and to yield stable and high-quality white light with brightness of 4510 lm@43 W, luminous efficacy of 105 lm/W, correlated color temperature of 3541 K, and color rendering index of 80.0. Furthermore, the phosphor-in-glass film-converted laser projection system was also successfully designed, showing a more vivid color effect compared to a traditional LED-based projector. This work emphasizes the importance of the thermal management upon high-power laser irradiation, and hopefully facilitates the development of a new LD-driven lighting source for high-power laser projection displays.

This paper reports a multifunctional magnetic-photoelectric laminate device based on the integration of spintronic material (La_0.7Sr_0.3MnO₃) and multiferroic (Ni-doped BiFeO₃), in which the repeatable modulation effect on the photoelectric properties were achieved by applying external magnetic fields. More obviously, photocurrent density (J) of the laminate was largely enhanced, the change rate of J up to 287.6% is obtained. This sensing function effect should be attributed to the low-field magnetoresistance effect in perovskite manganite and the scattering of spin photoelectron in multiferroic material. The laminate perfectly combines the functions of sensor and controller, which can not only reflect the intensity of environmental magnetic field, but also modulate the photoelectric conversion performance. This work provides an alternative and facile way to realize multi-degree-of-freedom control for photoelectric conversion performances and lastly miniaturize multifunction device.