Development and function of novel electron-transporters realizinghigher order organic nanostructure for next generation organic LED

新型电子传输剂的开发和功能实现下一代有机LED的高阶有机纳米结构

• 批准号: 23750204
• 负责人: SASABE Hisahiro
• 金额: $ 2.58万
• 依托单位: Yamagata University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23750204/
• 关键词: 有機ELデバイス; リン光材料; 電子輸送材料; フェニルピリジン誘導体; 三重項励起状態; 分子間相互作用; 水素結合; 分子配向; 有機EL

Phosphorescent organic light-emitting device (organic LED) can realize four times higher efficiency than that in fluorescent organic LED. So far, our group has already developed high-efficiency sky-blue, green, and white organic LEDs with external quantum efficiency of 30%. These remarkable advances have been achieved by use of novel phosphorescent materials, especially phenylpyridine-containing electron transport materials (ETMs). However, there is few papers dealing with an effective molecular design for such ETMs. Generally, DFT calculation has been recognized as a powerful tool to design a promising material, however, this calculation can give only limited structural and optical properties in vacuum. While in organic LEDs, amorphous molecular glasses are normally used and solid state properties are critical for realizing high-efficiency devices. From this perspective, we have investigated the relationships among (1) DFT calculation, (2) physical properties and (3) overall device performances of novel ETMs with emphasis on the single crystal XRD analyses. Based on these analyses, we have successfully proposed a promising design for an ETM that can be self-assembled by using CH/N hydrogen bonds between pyridines in the solid state.

磷光有机发光器件（有机LED）的发光效率是荧光有机LED的4倍。到目前为止，我们的团队已经开发出高效率的天蓝、绿色和白色有机led，外量子效率达到30%。这些显著的进步是由于使用了新型磷光材料，特别是含苯基吡啶的电子传输材料（ETMs）。然而，很少有论文涉及这种ETMs的有效分子设计。一般来说，DFT计算已被认为是设计有前途的材料的有力工具，然而，这种计算只能给出有限的真空结构和光学性质。而在有机led中，通常使用非晶分子玻璃，固态特性对于实现高效率器件至关重要。从这个角度来看，我们研究了新型etm的(1)DFT计算，(2)物理性质和(3)整体器件性能之间的关系，重点是单晶XRD分析。基于这些分析，我们成功地提出了一种有前途的设计，可以在固态中利用吡啶之间的CH/N氢键自组装ETM。

项目成果

Naoya Aizawa, Yong-Jin Pu, Takayuki Chiba, Hisahiro Sasabe, Junji Kido

相泽直哉、浦龙镇、千叶孝之、笹部久宏、城户淳二

• 发表时间: 2011
• 作者: M. Nakamoto;Y. Hoshino;Y. Miura;Cross-linkable host materials for solution-processed multilayer organic light-emitting devices
• 通讯作者: Cross-linkable host materials for solution-processed multilayer organic light-emitting devices

m-ターフェニル修飾スルホン誘導体の合成と高効率リン光有機 EL 素子の開発

间三联苯改性砜衍生物的合成及高效磷光有机EL器件的开发

• 作者: 清野雄基;笹部久宏;木村昌人;城戸淳二
• 通讯作者: 城戸淳二

ビピリジル配位子を持つイリジウム錯体を用いた青色リン光有機ELデバイス

使用具有联吡啶配体的铱络合物的蓝色磷光有机EL器件

• 作者: 渡邊雄一郎;笹部久宏;Florian Kessler;片桐洋史;Md. K. Nazeeruddin;Michael Grätzel;城戸淳二
• 通讯作者: 城戸淳二

Diphenylsulfone Containing Carbazole Derivatives as a Host Material for Phosphorescent OLEDs

含咔唑衍生物的二苯砜作为磷光 OLED 主体材料

• 作者: Yuki Seino;Hisahiro Sasabe;Masato Kimura;Junji Kido
• 通讯作者: Junji Kido

稲山智、夫勇進、千葉貴之、相澤直矢、笹部久宏、城戸淳二

稻山聪、付佑信、千叶孝之、相泽直也、笹部久宏、城户淳二

• 作者: Kazutaka Hirakawa;Hiroshi Segawa;Toru Hirano;Shigetoshi Okazaki;and Yoshio Nosaka et al. ed. by Norio Miyoshi and Roy H. Pottier;高効率マルチフォトンエミッション型ポリマーEL素子の作製;Kazutaka Hirakawa et al. ed. by James C. Taylor;マルチフォトン素子によるリン光・蛍光ハイブリッド型白色有機EL素子の高効率化;塗布-蒸着-塗布型マルチフォトンエミッション有機EL素子;単分子からエキシマー発光するπ共役スタック型化合物の有機EL素子への応用;高効率の低分子有機薄膜太陽電池;塗布型熱架橋性ホスト材料を用いた積層有機EL素子の作製;変換効率 6%を超える低分子共蒸着型有機薄膜太陽電池;熱架橋基を有するホール輸送材料の合成と塗布型有機EL素子への応用
• 通讯作者: 熱架橋基を有するホール輸送材料の合成と塗布型有機EL素子への応用