2017年10月
A new electrode design for ambipolar injection in organic semiconductors
NATURE COMMUNICATIONS
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- 巻
- 8
- 号
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1038/s41467-017-01047-9
- 出版者・発行元
- NATURE PUBLISHING GROUP
Organic semiconductors have attracted much attention for low-cost, flexible and human-friendly optoelectronics. However, achieving high electron-injection efficiency is difficult from air-stable electrodes and cannot be equivalent to that of holes. Here, we present a novel concept of electrode composed of a bilayer of tetratetracontane (TTC) and polycrystalline organic semiconductors (pc-OSC) covered by a metal layer. Field-effect transistors of single-crystal organic semiconductors with the new electrodes of M/pc-OSC/TTC (M: Ca or Au) show both highly efficient electron and hole injection. Contact resistance for electron injection from Au/pc-OSC/TTC and hole injection from Ca/pc-OSC/TTC are comparable to those for electron injection from Ca and hole injection from Au, respectively. Furthermore, the highest field-effect mobilities of holes (22 cm(2) V-1 s(-1)) and electrons (5.0 cm(2) V-1 s(-1)) are observed in rubrene among field-effect transistors with electrodes so far proposed by employing Ca/pc-OSC/TTC and Au/pc-OSC/TTC electrodes for electron and hole injection, respectively.
- リンク情報
- ID情報
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- DOI : 10.1038/s41467-017-01047-9
- ISSN : 2041-1723
- Web of Science ID : WOS:000413118900002