https://scholars.lib.ntu.edu.tw/handle/123456789/408141
Title: | New bioinspired hole injection/transport materials for highly efficient solution-processed phosphorescent organic light-emitting diodes | Authors: | Cheng C.-C. Chu Y.-L. Chang F.-C. Lee D.-J. Yen Y.-C. Chen J.-K. Chu C.-W. Xin Z. |
Keywords: | Conducting polymers;Electro-optical materials;Hole injection/transport layer;Organic light-emitting diodes;Supramolecular assembly | Issue Date: | 2015 | Journal Volume: | 13 | Start page/Pages: | 1-8 | Source: | Nano Energy | Abstract: | A new concept to supramolecular assembly of existed functional polymers, capable of forming network-like organizational clusters through multiple hydrogen-bonding interactions has been exploited. In this paper, a new adenine-based poly(triphenylamine-carbazole) (PTC-A) has been prepared which exhibits a high self-complementary ability in solution and solid states owing to the formation of adenine-adenine (A-A) pairs by induced hierarchical self-assembly. Comparing with uracil-substituted PTC sample (PTC-U), PTC-A presents a much higher thermal stability, electrochemical stability and solvent-resistance ability due to the formation of the more stable physically cross-linking structure. When the PTC-A is utilized as a hole injection/transport layer in a trilayer OLED device, a remarkable improvement in performance relative to the control PTC and PTC-U under similar experimental conditions has been achieved. Further comparison with a control device using a conventional PEDOT:PSS, the efficiency of the solution-processed phosphorescent PLED device with PTC-A is significantly higher than those of PTC-U and PEDOT:PSS-based devices. Thus, PTC-A represents the next-generation hole injection/transport material for high efficiency LED device and low-cost fabrication process. ? 2015 Elsevier Ltd. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/408141 | ISSN: | 22112855 | DOI: | 10.1016/j.nanoen.2015.02.010 |
Appears in Collections: | 化學工程學系 |
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