Power-efficient and solution-processed red phosphorescent organic light-emitting diodes by choosing combinations of small molecular materials to form a well-dispersed exciplex co-host
文献类型：期刊论文
| 作者 | Yao, Bing1,2; Lin, Xingdong1,4; Zhang, Baohua1,3; Wang, Hailong1,2; Liu, Xuejing1; Xie, Zhiyuan1 |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY C
 |
| 出版日期 | 2018-04-28 |
| 卷号 | 6期号:16页码:4409-4417 |
| ISSN号 | 2050-7526 |
| DOI | 10.1039/c8tc00592c |
| 英文摘要 | Exciplexes consisting of a combination of hole-transporting and electron-transporting materials and exhibiting narrow HOMO-LUMO gaps and bipolar transport ability are promising host choices in solution-processed phosphorescent organic light-emitting diodes (s-PhOLEDs). However, till date, there have been just a few reports on power-efficient s-PhOLEDs that use such an exciplex host structure. Herein, we successfully fabricated ultralow driving-voltage and power-efficient red s-PhOLEDs with a common hole-transporting and electron-transporting material combination, i.e. m-MTDATA:OXD-7 as exciplex co-host and Ir(MDQ)(2)acac as red dopant. The resultant s-PhOLEDs achieve satisfactory overall electroluminescent (EL) performance, i.e., light turn-on voltage at 2.4 V, maximum luminance of 26 385 cd m(-2), peak external quantum efficiency (EQE) of 15.5% and peak power efficiency (PE) of 36.9 lm W-1, respectively. However, a s-PhOLED using an exciplex-forming co-host couple of m-MTDATA:TmPyPB displays high turn-on voltage of 4.4 V and low EQE and PE of 9.4% and 10.1 lm W-1, respectively. The mechanism accounting for such an EL difference of s-PhOLEDs using m-MTDATA:OXD-7 or m-MTDATA:TmPyPB exciplex host were explored. It is found that the intrinsic incompatibility between m-MTDATA and TmPyPB does play a key role, which significantly deteriorates the bipolar charge transport capability of the solution-processed exciplex co-host matrix and consequently the EL performance of the resultant s-PhOLEDs. |
| 语种 | 英语 |
| 出版者 | ROYAL SOC CHEMISTRY |
| WOS记录号 | WOS:000433512000007 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/42693]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zhang, Baohua; Xie, Zhiyuan |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Jilin, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Guangzhou Univ, Sch Chem & Chem Engn, Ctr Adv Analyt Sci, Guangzhou 510006, Guangdong, Peoples R China 4.Changchun Univ Sci & Technol, Sch Sci, Changchun 130022, Jilin, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yao, Bing,Lin, Xingdong,Zhang, Baohua,et al. Power-efficient and solution-processed red phosphorescent organic light-emitting diodes by choosing combinations of small molecular materials to form a well-dispersed exciplex co-host[J]. JOURNAL OF MATERIALS CHEMISTRY C,2018,6(16):4409-4417. |
| APA | Yao, Bing,Lin, Xingdong,Zhang, Baohua,Wang, Hailong,Liu, Xuejing,&Xie, Zhiyuan.(2018).Power-efficient and solution-processed red phosphorescent organic light-emitting diodes by choosing combinations of small molecular materials to form a well-dispersed exciplex co-host.JOURNAL OF MATERIALS CHEMISTRY C,6(16),4409-4417. |
| MLA | Yao, Bing,et al."Power-efficient and solution-processed red phosphorescent organic light-emitting diodes by choosing combinations of small molecular materials to form a well-dispersed exciplex co-host".JOURNAL OF MATERIALS CHEMISTRY C 6.16(2018):4409-4417. |
入库方式： OAI收割
来源：化学研究所
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