| Presentation | 2024-01-25 Luminescence and electrical properties of far-red ZnGa2O4:Cr3+ posphor thin films Ryota Hourai, Akihisa Yamasaki, Koutoku Ohmi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The luminescent properties of ZnGa2O4:Cr3+ far-red phosphors were investigated by In addition. In the phosphor powder samples prepared by the solid-phase reaction method, the X-ray diffraction peak shifted to lower angle with increasing the amount of In, confirming the formation of Zn(Ga,In)2O4:Cr3+ mixed crystal. The photoluminescence (PL) intensity also increased by about 1.5 times. Since the intensities of both the Cr3+ direct PL excitation band and the Cr3+ absorption band of the diffuse reflection spectrum increase with In addition, the mixed crystal formation promotes the incorporation of Cr3+ ions into the host crystal lattice, resulting in the improvement in the PL characteristics. On the other hand, in the thin film samples prepared by an electron beam evaporation and annealed at 700℃ for 30 min, the effects of the In addition such as the mixed crystal formation, the improvement in luminescent properties and electrical conductivity were hardly observed. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Far-red phosphor / ZnGa2O4:Cr3+ / indium addition / mixed crystal / plant growth lighting |
| Paper # | EID2023-7 |
| Date of Issue | 2024-01-18 (EID) |
| Conference Information | |
| Committee | EID / ITE-IDY / IEE-EDD / SID-JC / IEIJ-SSL |
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| Conference Date | 2024/1/25(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Masayuki Kanbara(NAIST) |
| Vice Chair | Mitsuhiro Akimoto(Sanyo-Onoda City Univ) / Masanobu Mizusaki(SHARP) |
| Secretary | Mitsuhiro Akimoto(NHK) / Masanobu Mizusaki(Japan Display) |
| Assistant | Munekazu Date(NTT) / Mutsumi Kimura(Ryukoku Univ.) / Tomokazu Shiga(Univ. of Electro-Comm.) / Hiroko Kominami(Shizuoka Univ.) / Rumiko Yamaguchi(Akita Univ.) / Masahiro Yamaguchi(Tokyo Inst. of Tec.) |
| Paper Information | |
| Registration To | Technical Committee on Electronic Information Displays / Technical Group on Information Display / Technical Meeting on Electron Devices / Society for Information Display Japan Chapter / Division of Solid State Light Sources |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Luminescence and electrical properties of far-red ZnGa2O4:Cr3+ posphor thin films |
| Sub Title (in English) | Improvement in luminescent characteristics by In addition |
| Keyword(1) | Far-red phosphor |
| Keyword(2) | ZnGa2O4:Cr3+ |
| Keyword(3) | indium addition |
| Keyword(4) | mixed crystal |
| Keyword(5) | plant growth lighting |
| 1st Author's Name | Ryota Hourai |
| 1st Author's Affiliation | Tottori University(Tottori Univ.) |
| 2nd Author's Name | Akihisa Yamasaki |
| 2nd Author's Affiliation | Tottori University(Tottori Univ.) |
| 3rd Author's Name | Koutoku Ohmi |
| 3rd Author's Affiliation | Tottori University(Tottori Univ.) |
| Date | 2024-01-25 |
| Paper # | EID2023-7 |
| Volume (vol) | vol.123 |
| Number (no) | EID-360 |
| Page | pp.pp.21-24(EID), |
| #Pages | 4 |
| Date of Issue | 2024-01-18 (EID) |