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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 35  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
IEICE-EID, IDY, IEE-EDD, SID-JC, IEIJ-SSL [detail] 2024-01-25
13:35
Kyoto
(Primary: On-site, Secondary: Online)
Luminescence and electrical properties of far-red ZnGa2O4:Cr3+ posphor thin films -- Improvement in luminescent characteristics by In addition --
Ryota Hourai, Akihisa Yamasaki, Koutoku Ohmi (Tottori Univ.)
The luminescent properties of ZnGa2O4:Cr3+ far-red phosphors were investigated by In addition. In the phosphor powder sa... [more]
IDY, SID-JC 2023-03-17
16:00
Online online [Invited Talk] Development of Phosphor film for Ultra-thin High-brightness LCDs
Takehiro Yamasuge, Yasushi Ito, Tomomitsu Hori (Dexerials)
In recent years, mini-LEDs and local dimming have been used in direct-type backlight units (BLUs) in LCDs to realize thi... [more] IDY2023-22
pp.39-43
IDY, IEIJ-SSL, IEICE-EID, SID-JC, IEE-EDD [detail] 2023-01-27
14:25
Online   Improvement of Photoluminescent Characteristics by Post Annealing in O3 atmosphere for Y4Si2O7N2:Eu3+ Red Phosphors
Rentaro Furuie, Hiroki Shinoda (TU), Takashi Kunimoto (Tokushima Bunri), Koutoku Ohmi (TU)
A low-temperature post-annealing in O3 atmosphere has been attempted to enhance the Eu3+ activation for Y4Si2O7N2:Eu3+ r... [more] IDY2023-9
pp.33-36
IDY, IEIJ-SSL, IEICE-EID, SID-JC, IEE-EDD [detail] 2023-01-27
14:35
Online   Study of dispersed inorganic EL devices using ZnS:Cu nanophosphors -- Improvement of PL and EL characteristics by liquid-phase mixing ZnS:Cu and CuS particles --
Rei Matsukuma, Ryousuke Nagai, Koutoku Ohmi (Tottori Univ.)
For the dispersed inorganic electroluminescence (EL) devices using ZnS:Cu phosphor, improvements of luminance and lumino... [more] IDY2023-10
pp.37-40
IDY, IEICE-EID, IEE-EDD, SID-JC, IEIJ-SSL [detail] 2022-01-28
11:30
Online   Liquid phase synthesis of near-infrared phosphor Ca2GeO4: Mn5+ for in vivo bioimaging
Yudai Nitta, Hiroto Sanzen, Koutoku Ohmi (Tottori Univ.)
In our previous studies, Ca2GeO4:Mn5+ has been synthesized as a near-infrared (NIR) phosphor for bioimaging by the solid... [more]
IEICE-EID, IDY, IEIJ-SSL, SID-JC, IEE-EDD [detail] 2021-01-29
10:00
Kyoto   Red luminescence excited by blue light in (Ca,Sr)5(PO4)3F:Eu2+
Kai Shimura, Hiroki Kushima, Yuki Tamura, Tsuyoshi Okuno (UEC Tokyo)
The red phosphor (Ca,Sr)5(PO4)3F:Eu2+ is reported. Under visible light excitation at 400–600 nm, broad red luminescence ... [more] IDY2021-1
pp.33-36
IDY, IEICE-EID, IEIJ-SSL, SID-JC, IEE-EDD [detail] 2020-01-23
13:45
Tottori Tottori Univ [Poster Presentation] New sulfide phosphors able to be grown on silicon wafer
Hiroki Nakamura, Mizuki Aono, Tsuyoshi Okuno (UEC Tokyo), Yasushi Nanai (Aoyama Gakuin Univ.)
New green phosphor SrZnSiS4:Eu2+ is reported. It has an orthorhombic structure with a space group of Fddd (no.70). Absor... [more] IDY2020-10
pp.33-36
IDY, IEICE-EID, IEIJ-SSL, SID-JC, IEE-EDD [detail] 2020-01-23
13:50
Tottori Tottori Univ [Poster Presentation] Investigation of correlation between PL temperature characteristics and charge transfer state (CTS) in Eu3+ activated red multi-anion compound phosphors
Misa Kawashima, Ken Kinoshita, Takuya Sohma, Kodai Nakamoto, Tadashi Ishigaki (Tottori Univ.), Takashi Kunimoto (Tokushima Bunri Univ.), Koutoku Ohmi (Tottori Univ.)
Eu3+ activated red multi-anion compound phosphors, such as Y4Si2O7N2:Eu3+ (YSON), La2O3:Eu3+ (LO) and LaOF:Eu3+ (LOF), h... [more]
IDY, IEICE-EID, IEIJ-SSL, SID-JC, IEE-EDD [detail] 2020-01-23
14:00
Tottori Tottori Univ [Poster Presentation] Excitation and luminescent characteristics LaSiO2N:Eu red phosphors synthesized in NH3
KenKinoshita, Misa Kawashima, Takuya Sohma, Tadashi Ishigaki (Tottori Univ.), Takashi Kunimoto (Tokusima Bunri Univ.), Koutoku Ohmi (Tottori Univ.)
Red Phosphor LaSiO2N:Eu has been synthesized in NH3 atmosphere. The synthesized sample shows a red emission due to Eu3+ ... [more]
IDY, IEICE-EID, IEIJ-SSL, SID-JC, IEE-EDD [detail] 2020-01-23
14:05
Tottori Tottori Univ [Poster Presentation] Dispersive type EL devices prepared using ZnS:Cu nanophosphor -- Improvement of PL and EL characteristics by adding several flux materials --
Koki Saruta, Shuma Bando, Tadashi Ishigaki, Koutoku Ohmi (Tottori Univ)
For dispersive inorganic electroluminescent (EL) devices using ZnS:Cu phosphor, improvement of luminance and efficiency ... [more]
IDY, IEICE-EID, IEIJ-SSL, SID-JC, IEE-EDD [detail] 2020-01-23
14:10
Tottori Tottori Univ [Poster Presentation] Mn5+ activated M2AO4 (M = Ca, Sr, Ba, A = Si, Ge) near-infrared phosphors
Shoto Tanaka, Tadashi Ishigaki, Yutaro Zaima, Kohei Matsubara, Yudai Nitta, Koutoku Ohmi (Tottori Univ.)
M2AO4:Mn5+ (M = Ca, Sr, Ba, A = Si, Ge) phosphors have been synthesized by solid-state reaction method. Their crystallog... [more]
IDY, IEICE-EID, IEIJ-SSL, SID-JC, IEE-EDD [detail] 2020-01-24
10:10
Tottori Tottori Univ [Poster Presentation] Quality of deep ultraviolet emitting ZnAl2O4 thin films prepared by thermal diffusion
Kaito Imagawa, Naoki Sonoda, Hiroko Kominami, Kazuhiko Hara (Shizuoka Univ.)
ZnAl2O4 thin films for deep UV emitting phosphor prepared by deposition of ZnO on sapphire substrates and thermal diffus... [more] IDY2020-16
pp.81-84
IDY, IEICE-EID, IEIJ-SSL, SID-JC, IEE-EDD [detail] 2020-01-24
10:55
Tottori Tottori Univ [Poster Presentation] Current injection type emission devices using conductive ternary sulfide/oxide phosphor thin films
Kazuki Tsujimori, Syunjo Koga, Tadashi Ishigki, Koutoku Ohmi (Tottori Univ.)
In this study, the fabrication of current-injection type light-emitting devices using CuAlS_2:Mn and ZnGa_2O_4:Cr polycr... [more]
IDY, IEICE-EID, IEIJ-SSL, SID-JC, IEE-EDD [detail] 2020-01-24
11:05
Tottori Tottori Univ [Poster Presentation] Influence of Bi codoping to excitation characteristics in tetragonal Mg2TiO4:Mn4+ deep red phosphors
Motoshi Suhama, Yusuke Ueno, Tadashi Ishigaki, Koutoku Ohmi (Tottori Univ.)
In this study, the Bi3+ codoping to Mg2TiO4:Mn4+ has been attempted. In addition, a low temperature annealing at 625°C f... [more]
IDY, IEICE-EID, IEIJ-SSL, SID-JC, IEE-EDD [detail] 2020-01-24
11:20
Tottori Tottori Univ [Poster Presentation] Characteristics of luminescence and particle shape in M10(PO4)6(OH)2:Mn5+ (M=Ca,Sr,Ba) near-infrared nanophosphors
Yutaro Zaima, Tadashi Ishigaki, Kouhei Matsubara, Shoto Tanaka, Yudai Nitta, Koutoku Ohmi (tottori Univ)
Recently, we succeeded in synthesizing a near-infrared Ca10(PO4)6(OH)2:Mn5+ (HAp:Mn5+) nanophosphors by liquid phase rea... [more]
IDY, IEICE-EID, IEIJ-SSL, SID-JC, IEE-EDD [detail] 2019-01-25
09:55
Kagoshima   [Poster Presentation] Current injection type emission devices using CuAlS2:Mn phosphor thin films -- SiO2 barrier layer suppressing interfacial diffusion between phosphor/electrode layers --
Shogo Ueda, Kazuki Tujimori, Tadashi Ishigaki, Koutoku Ohmi (Tottori Univ.)
Red light-emitting devices consisting of CuAlS2:Mn polycrystalline phosphor thin films have been investigated. CuAlS2:Mn... [more] IDY2019-17
pp.81-84
IDY 2017-02-24
14:10
Tokyo Kikai-Shinko-Kaikan Bldg. [Invited Talk] Improvement of Photodegradation of (Ca, Sr)2(Al,Si)5(O,N)8:Eu Phosphors by Composition Change and Realization of High CRI White-LEDs
Tsuneo Kusunoki, Masaki Kanno, Moriaki Abe (Dexerials Corp.)
Nitridosilicates (Ca,Sr)2(1-x)(Aly,Si1-y)5(O,N)8:Eux are efficient and affordable red-emitting phosphors. In this study ... [more] IDY2017-20
pp.11-14
IEICE-EID, IDY, IEE-EDD, SID-JC, IEIJ-SSL [detail] 2016-01-28
13:54
Toyama Toyama Univ. Synthesis of YVO4:Bi,Eu nanoparticles and wavelength conversion films for solar panels -- In-situ pH monitor for highly activating Bi and Eu centers --
Ryosuke Sakata, Ryo Nagayama (Tottori Univ.), Tadashi Ishigaki (TiFREC), Hiroshi Okura (Merck Ltd.), Koutoku Ohmi (Tottori Univ.)
The strong light absorption and visible light scattering is required for wavelength conversion phosphors for solar batte... [more] IDY2016-1
pp.13-16
IEICE-EID, IDY, IEE-EDD, SID-JC, IEIJ-SSL [detail] 2016-01-28
14:40
Toyama Toyama Univ. TEEL devices coated with surfactant-free phosphor particles
Shinya Hatayama (Tottori Univ.), Shohei Ueda (Tottori Univ), Tadashi Ishigaki (TiFREC), Koutoku Ohmi (Tottori Univ.)
In this study, we have investigated a synthesis of surfactant-free ZnS:Mn phosphor precursor solution and a preparation ... [more] IDY2016-3
pp.29-32
IEICE-EID, IDY, IEE-EDD, SID-JC, IEIJ-SSL [detail] 2016-01-29
10:28
Toyama Toyama Univ. Synthesis and Luminescence Properties of Mn4+-activated Red-emitting Phosphor
Takuya Hasegawa, Tsubasa Yoshizawa, Hiromi Mizobuchi, Sun-Woog Kim, Kazuyoshi Uematsu, Kenji Toda, Mineo Sato (Niigata Univ.)
Red-emitting La2MgGeO6:Mn4+ and α-Al2O3:Mn4+ phosphors were synthesized by a polymerized complex method and a novel flux... [more]
 Results 1 - 20 of 35  /  [Next]  
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