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AssigneesGeorgia Tech Research Corporation, Samsung SDI Co., Ltd.
InventorsWoun-jhang Park, Christopher J. Summers, Young-rag Do, Do-hyung Park, Hong-geun Yang
Estimating the term…
A method of producing two visible light photons from an oxide-based phosphor doped with praseodymium (Pr) and including atoms of at least one activator in response to excitation with a single ultraviolet light photon. The method includes exciting the Pr of the oxide-based phosphor with a photon of ultraviolet light to excite an electron to an excited state, the excited electron falling to a lower energy state in a non-radiative transition and transferring energy to excite a first activator atom in the oxide-based phosphor, the first activator atom emitting a first photon of visible light, and the excited electron falling further to a lower energy state in a non-radiative transition, transferring energy to excite a second activator atom in the oxide-based phosphor, the second activator atom emitting a second photon of visible light. An oxide-based phosphor doped with praseodymium includes atoms of at least one activator and emitting two visible light photons in response to excitation by a single ultraviolet light photon.
A method of producing two visible light photons from an oxide-based phosphor comprising SrAl12O19 doped with praseodymium (Pr) and including atoms of at least one activator comprising at least one of terbium and europium in response to excitation with a single ultraviolet light photon, the method comprising exciting the Pr of the oxide-based phosphor with a photon of ultraviolet light to excite an electron to an excited state, the excited electron falling to a lower energy state in a non-radiative transition and transferring energy to excite a first activator atom in the oxide-based phosphor, the first activator atom emitting a first photon of visible light, and the excited electron falling further to a lower energy state in a non-radiative transition, transferring energy to excite a second activator atom in the oxide-based phosphor, the second activator atom emitting a second photon of visible light.
An oxide-based phosphor comprising SrAl12O19 doped with praseodymium (Pr) and including atoms of at least one activator comprising at least one of terbium and europium and emitting two visible light photons in response to excitation with a single ultraviolet light photon.
Dependencies are inferred from the claim text.