Highly Efficient Three Primary Color Organic Single‐Crystal Light‐Emitting Devices with Balanced Carrier Injection and Transport |
| |
| Authors: | Ran Ding Jing Feng Feng‐Xi Dong Wei Zhou Yang Liu Xu‐Lin Zhang Xue‐Peng Wang Hong‐Hua Fang Bin Xu Xian‐Bin Li Hai‐Yu Wang Shu Hotta Hong‐Bo Sun |
| |
| Affiliation: | 1. State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, China;2. International Research Centre for Nano Handling and Manufacturing of China (CNM), Changchun University of Science and Technology, Changchun, China;3. State Key Laboratory of Supermolecular Structures and Materials, Jilin University, Changchun, China;4. Department of Macromolecular Science and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Matsugasaki, Sakyo‐ku, Kyoto, Japan;5. College of Physics, Jilin University, Changchun, China |
| |
| Abstract: | Organic single crystals have a great potential in the field of organic optoelectronics because of their advantages of high carrier mobility and high thermal stability. However, the application of the organic single crystals in light‐emitting devices (OLEDs) has been limited by single‐layered structure with unbalanced carrier injection and transport. Here, fabrication of a multilayered‐structure crystal‐based OLED constitutes a major step toward balanced carrier injection and transport by introducing an anodic buffer layer and electron transport layer into the device structure. Three primary color single‐crystal‐based OLEDs based on the multilayered structure and molecular doping exhibit a maximum luminance and current efficiency of 820 cd cm?2 and 0.9 cd A?1, respectively, which are the highest performance to date for organic single‐crystal‐based OLEDs. This work paves the way toward high‐performance organic optoelectronic devices based on the organic single crystals. |
| |
| Keywords: | molecular doping multilayered structures organic single‐crystal‐based OLEDs three primary colors |
|
|
