Mitsubishi Chemical Corporation

University of California

Motoyuki Shigeiwa

Naoto Kijima

Hiromu Watanabe

Hiroshi Wada

Keiichi Seki

Kaoru Terada

Masumi Itou

Guillermo C Bazan

Janice W Hong

Takatoshi Seto

Masahiko Yoshino

Alexander Mikhailovsky

Masayoshi Mikami

Hiroyuki Imura

Hadjar Benmansour

Bernhard Koehler

Hideki Gorohmaru

Shuuichi Maeda

T Kojima

Han Young Woo

A nitride phosphor contains europium as an activating element and strontium, or strontium and calcium, as divalent metal elements. The phosphor further includes aluminum and silicon. Of the europium in the phosphor, at least 85% is in the form of Eu. The phosphor has a peak emission wavelength of from 590 nm to 650 nm. A phosphorescent body that includes the phosphor can be suitable for converting a wavelength of at least a portion of light emitted from an excitation light source in a light-emitting device.

Europium- and strontium-based phosphor

The present invention relates to a phosphor comprising a nitride or an oxynitride, comprising an X-ray powder diffraction pattern comprising at least one Region having at least one peak with an intensity ratio I of 8% or less, the X-ray powder diffraction pattern measured in the 2&#x3b8; range from 10&#xb0; to 60&#xb0; using a CuK&#x3b1; line (1.54184 {acute over (&#x212b;)}), wherein the Region is the 2&#x3b8; range from 41.5&#xb0; to 47&#xb0;, the intensity of each peak is a value obtained after background correction, and the intensity ratio I is defined by the formula (I&#xd7;100)/I(%), where Irepresents the height of the most intense peak present in the 2&#x3b8; range from 34&#xb0; to 37&#xb0; and Irepresents the height of each peak.

Alloy powder for raw material of inorganic functional material and phosphor

The present invention provides an alloy powder that is a material for producing inorganic functional materials such as phosphors, a phosphor with high brightness, and a method for producing the phosphor. An alloy powder for an inorganic functional material precursor contains at least one metal element and at least one activating element Mand has a weight-average median diameter Dof 5 &#x3bc;m to 40 &#x3bc;m. A method for producing a phosphor includes a step of heating an alloy, containing two or more metal elements for forming the phosphor, in a nitrogen-containing atmosphere.

Alloy powder for material of inorganic functional material precursor and phosphor

An object of the present invention is to provide a high-efficiency red light emitting phosphor and white light emitting phosphor for using in a display or lighting which high-efficiently emits light in combination with a light source which emits light in the region from near-ultraviolet light to visible light. The present invention relates to a phosphor having a crystal phase having a specified chemical composition.

Phosphor and including the same, light emitting apparatus, illuminating apparatus and image display

Chromophores having two-photon or other multi-photon absorptivity. The chromophores are based on a structure of four stilbenoid groups attached to a paracyclophane core, where each stilbenoid group comprises a nitrogen-containing organic group attached by its nitrogen atom to a stilbenoid arm. In particular embodiments, at least one of the stilbenoid groups includes a sulfonium, ammonium, selenium, iodonium or phosphonium moiety. The chromophores have utility as photo-polymerization initiators and two-photon fluorophores for biological imaging.

Paracyclophane molecules for two-photon absorption applications

Growing community of inventors

Yokohama, Japan

Motoyuki Shigeiwa