National Institute of Advanced Industrial Science and Technology

Hiroshi Takashima

Mitsuru Itoh

Takeo Ebina

Naoki Shirakawa

Hiroyuki Tetsuka

Akira Shoji

Ruiping Wang

Kazushige Ueda

Keiichi Ikegami

Yoshiyuki Inaguma

Noboru Miura

A perovskite phosphor film emitting red light from among the three primary colors (i.e., red, green and blue) underlying the construction of displays which is fabricated by adsorbing a nanosheet as a seed layer on a solid substrate and forming an oriented film of an oxide phosphor thereon, characterized in that the perovskite phosphor film comprises a film of an oxide phosphor () having a high transparency that is formed on a seed layer comprising a nanosheet () that is adsorbed on a solid substrate () such as a glass substrate or the like, and the oxide phosphor () is (SrCa)PrTiO: 0&#x2266;x&#x2266;0.8, 0.001&#x2266;y&#x2266;0.01.

Perovskite phosphor film

There are provided a perovskite oxide thin film EL element in which a hole transport layer/a light-emitting layer/an electron transport layer comprising a perovskite oxide thin film are formed on a lower electrode, and an upper electrode is formed thereon, and a perovskite oxide thin film EL element that provides red light emission in the vicinity of a wavelength of 610 nm, which is the basis of display making. A perovskite oxide thin film EL element comprising a lower electrodecomprising a polished single crystal substrate, an electron transport layercomprising a perovskite oxide thin film, which is a dielectric, formed on the lower electrode, a light-emitting layercomprising a perovskite oxide thin film formed on the electron transport layer, a hole transport layercomprising a perovskite oxide thin film, which is a dielectric, formed on the light-emitting layer, a buffer layerformed on the hole transport layer, and a transparent upper electrodeformed on the buffer layer

Perovskite oxide thin film EL element

A capacitance temperature sensor in which temperature is measured by detecting capacitance of a parallel plate condenser which comprises a dielectric material comprising strontium titanate single crystal in which (a) 30% by weight or less of oxygen-or (b) 30% by weight to 50% by weight of oxygen-is substituted with oxygen-isotope.

Capacitance temperature sensor and temperature measuring device

Growing community of inventors

Tsukuba, Japan

Hiroshi Takashima