【摘要】 近年来，（MgCoNiCuZn）O高熵氧化物由于具有独特的结构和功能特性而引起极大关注。本研究通过高温固相法合成了等原子比的(Mg_0.2Co_0.2Ni_0.2Cu_0.2Zn_0.2)O高熵氧化物荧光粉，进而利用高熵陶瓷所特有的“鸡尾酒”效应设计出非等原子比的(Mg_0.2Co_0.35Ni_0.05Cu_0.05Zn_0.35)O高熵氧化物荧光粉。结果表明：等原子比的(Mg_0.2Co_0.2Ni_0.2Cu_0.2Zn_0.2)O高熵荧光粉在高温固相反应后为单相FCC结构，而非等原子比的(Mg_0.2Co_0.35Ni_0.05Cu_0.05Zn_0.35)高熵荧光粉为HCP和FCC双相结构。由于HCP相的出现使得(Mg_0.2Co_0.35Ni_0.05Cu_0.05Zn_0.35)O的发光强度相比于(Mg_0.2Co_0.2Ni_0.2Cu_0.2Zn_0.2)O的发光强度提高了约6倍，并且发射光波长发生红移至峰值发光强度为426 nm的波长处，为标准紫色光，表明利用高熵陶瓷所特有的“鸡尾酒”效应可以有效调控高熵氧化物荧光粉的发光强度及色域。更多还原

【Abstract】 Recently,（MgCoNiCuZn）O high-entropy oxides have attracted great attention due to their unique structural and functional properties. In this study,(Mg_0.2Co_0.2Ni_0.2Cu_0.2Zn_0.2)O high-entropy oxide phosphor with equal atomic ratio was synthesized by high-temperature solid-phase method, and then non equal atomic ratio(Mg_0.2Co_0.35Ni_0.05Cu_0.05Zn_0.35)O high-entropy oxide phosphor was designed by using the unique “cocktail” effect of high-entropy ceramics. The results show that the(Mg_0.2Co_0.2Ni_0.2Cu_0.2Zn_0.2)O high-entropy phosphor with equal atomic ratio has a single-phase FCC structure after the high-temperature solid-phase reaction, while the(Mg_0.2Co_0.35Ni_0.05Cu_0.05Zn_0.35)O high-entropy phosphor with non equal atomic ratio exhibits a dual-phase structure of HCP and FCC. Due to the existence of HCP phase, the luminescence intensity of the(Mg_0.2Co_0.35Ni_0.05Cu_0.05Zn_0.35)O high-entropy phosphor is about 6 times higher than that of the(Mg_0.2Co_0.2Ni_0.2Cu_0.2Zn_0.2)O high-entropy phosphor, and the wavelength of the emitted light is red-shifted to the peak luminous intensity of 426 nm, which is the standard violet light, indicating that the luminescence intensity and color gamut of high-entropy oxide phosphors can be effectively controlled by using the unique “cocktail” effect in high-entropy ceramics.更多还原