A solvent-free and vacuum-free melt-processing method to fabricate organic semiconducting layers with large crystal size for organic electronic applications
- 주제(기타) Materials Science, Multidisciplinary; Physics, Applied
- 설명문(일반) [Ribierre, Jean-Charles; Li, Zhao; Mathevet, Fabrice; Adachi, Chihaya] Kyushu Univ, Ctr Organ Photon & Elect Res OPERA, Nishi Ku, 744 Motooka, Fukuoka, Fukuoka 8190395, Japan; [Ribierre, Jean-Charles; Adachi, Chihaya] Kyushu Univ, Ctr Organ Photon & Elect Res OPERA, Japan Sci & Technol Agcy JST, ERATO,Adachi Mol Exciton Engn Project,Nishi Ku, 744 Motooka, Fukuoka, Fukuoka 8190395, Japan; [Liu, Xiao; Mathevet, Fabrice] Sorbonne Univ, Fac Sci, CNRS, IPCM,UMR 8232,Chim Polymeres, 4 Pl Jussieu, F-75005 Paris, France; [Liu, Xiao; Lacaze, Emmanuelle] Sorbonne Univ, Fac Sci, CNRS, Inst NanoSci Paris INSP, 4 Pl Jussieu, F-75252 Paris 05, France; [Heinrich, Benoit; Mery, Stephane] Univ Strasbourg, CNRS, UMR 7504, IPCMS, 23 Rue Loess, F-67034 Strasbourg 2, France; [Sleczkowski, Piotr; Xiao, Yiming; Wu, Jeong Weon; D'Aleo, Anthony] Ewha Womans Univ, Dept Phys, Seoul 03760, South Korea; [Lafolet, Frederic] Univ Grenoble Alpes, DCM UMR 5250, F-38000 Grenoble, France; [Lafolet, Frederic] Univ Paris Diderot, Sorbonne Paris Cite, ITODYS, UMR CNRS 7086, 15 Rue Jean Antoine de Baif, F-75205 Paris 13, France; [Hashizume, Daisuke] RIKEN, CEMS, 2-1 Hirosawa, Wako, Saitama, Japan; [Aoyama, Tetsuya; Uchiyama, Masanobu] RIKEN Cluster Pioneering Res CPR, Elements Chem Lab, 2-1 Hirosawa, Wako, Saitama, Japan; [Uchiyama, Masanobu] Univ Tokyo, Grad Sch Pharmaceut Sci, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan; [Wu, Jeong Weon; D'Aleo, Anthony] Joint CNRS Ewha Yonsei Lab, Bldg Blocks Future Elect Lab B FUEL 2, UMI 2002, Seoul, South Korea; [Zaborova, Elena; Fages, Frederic; D'Aleo, Anthony] Aix Marseille Univ, CNRS, CINaM UMR 7325, Campus Luminy,Case 913, F-13288 Marseille, France; [Adachi, Chihaya] Kyushu Univ, Int Inst Carbon Neutral Energy Res WPI I2CNER, Nishi Ku, 744 Motooka, Fukuoka, Fukuoka 8190395, Japan
- 발행기관 ROYAL SOC CHEMISTRY
- 발행년도 2019
- URI http://www.dcollection.net/handler/ewha/000000159677
- 본문언어 영어
- Published As http://dx.doi.org/10.1039/c8tc04834g
초록/요약
We report on an improved melt-processing method to prepare organic semiconducting layers with large crystal size and enhanced charge carrier mobilities. The organic compound used in this work is a solution-processable oligo(p-phenylene vinylene) derivative substituted at both ends with pyrene moieties. Accurate control of the temperature during the recrystallization of this compound from the melt enables the formation of large single crystal monodomains in thin films. The melt-processed organic layer shows higher mobilities in transistor configuration than in spin-coated films, which can be attributed to the presence of large-size crystalline monodomains as evidenced by X-ray diffraction measurements. We also investigated the photophysical properties of this material in spin-coated and melted films and found an increase of the photoluminescence quantum yield with the size of the crystals in the organic layer. The advantage of this method over the spin coating also allowed observation of amplified spontaneous emission that was only achieved in the melted film due to its improved luminescence efficiency. Overall, this study demonstrates a simple and versatile method, which does not require the use of any solvent and vacuum, to fabricate organic layers with large crystal size, suitable for the realization of organic electronic and light-emitting devices.
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