CAS: 100587-92-6; Terbium(Iii) Acetate Xhydrate

专利信息

专利号:US-2025122424-A1
优先权日:2023-10-13
标 题 :Low phonon energy nanoparticles based on alkali lead halides and methods of synthesis and use
发明人：ZHANG ZHUOLEI; SKRIPKA ARTIOM; SCHUCK P JAMES; COHEN BRUCE; CHAN EMORY
权利人:UNIV CALIFORNIA; UNIV COLUMBIA; UNIV MADRID AUTONOMA
摘要:Phonon engineered, lanthanide doped upconverting nanoparticles with very low phonon energies and tunable methods of synthesis that adjust OA:OM ratio and reaction temperature are provided. Low phonon energy KPb2X5 (X=Cl, Br) upconverting nanoparticles, both doped and undoped, exhibit dramatically suppressed multiphonon relaxation, enhancing upconversion emission from higher lanthanide excited states and enabling room temperature observation of avalanche like upconversion by Nd3+ ions. Intrinsic optical bistability (IOB) of the materials can provide bit level functionality to all optical computing. The IOB of Nd3+ doped nanocrystals, which are either bright or dark at the same excitation power based on power history, illustrate the functionality. High contrast switching and IOB are enabled via the photon avalanche process, which sustains population inversion between the ground and the first excited 4fN states of Nd3+ ions. The IOB of these nanocrystals can be controlled by temporal pump modulation and can store information.