Fabrication of organic electro-luminescence thin films using low temperature electron ablation method

2012 Fiscal Year Final Research Report

• Project/Area Number: 22540510
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Plasma science
• Research Institution: Sasebo National College of Technology
• Principal Investigator: SUDA Yoshiaki 佐世保工業高等専門学校, 電気電子工学科, 教授 (20124141)
• Co-Investigator(Renkei-kenkyūsha): KAWASAKI Hiroharu 佐世保工業高等専門学校, 電気電子工学科, 教授 (10253494) ; OHSHIMA Tamiko 佐世保工業高等専門学校, 電気電子工学科, 准教授 (00370049) ; YAGYU Yoshihito 佐世保工業高等専門学校, 電気電子工学科, 准教授 (40435483) ; SHIGEMATSU Toshinobu 佐世保工業高等専門学校, 電子制御工学科, 教授 (10390535)
• Project Period (FY): 2010 – 2012
• Keywords: パルスレーザ堆積 / 有機EL / 極低温プロセス / 粉体ターゲット

Research Abstract

We have prepared Alq3 thin films for organic electroluminescence by a pulsed laser deposition (PLD) method. In order to stabilize the density of the Alq3 target, we cooled the target by liquid nitrogen. The Alq3 target was fixed to the target holder made by copper and then liquid nitrogen was put into the target holder. The temperature of target cooled by liquid nitrogen was 77K. In this study, we have prepared Alq3 thin films by a Nd:YAG laser (532 nm) deposition method with the cooling target by liquid nitrogen. The experimental results suggest that Alq3 thin films are deposited at the fluence above 0.5 J/cm2. FT-IR spectra of the prepared films are as same as those of the Alq3 powder. UV-Vis spectrum shows that the prepared films have an absorption peak around 400 nm, which is distinct absorption peak of Alq3. The results suggest that structural and optical properties of the films prepared by cooling target are in agreement with Alq3 for organic electroluminescence.

Research Products

• [Journal Article] Preparation of a titanium thin film using a sputtering deposition process with a powder material target (2012)
  • Author(s): H. Kawasaki, T. Ohshima, K. Arafune, Y. Yagyu, Y. Suda
  • Journal Title: Transactions of the Materials Research Society of Japan Volume: Vol.37 No.2 Pages: pp.147-150
  • Peer Reviewed
• [Journal Article] Synthesis of Platinum Nanodots Using Organ-Metal Solutions (2012)
  • Author(s): T. Ohshima, R. Tanaka, H. Kawasaki, Y. Suda,Y. Yagyu, and S. Aoqui
  • Journal Title: Jpn. J. Appl. Phys Volume: Vol.51 08HF08
  • Peer Reviewed
• [Journal Article] Effect of Oxygen Gas Pressure on Electrical, Optical, and Structural Properties of Al-Doped ZnO Thin Films Fabricated by Pulsed Laser Deposition for Use as Transparent Electrodes in All-Solid-State Electrochromic Devices (2011)
  • Author(s): T. Ohshima, Y. Murakami, H. Kawasaki, Y. Suda, Y. Yagyu
  • Journal Title: Jpn. J. Appl. Phys Volume: Vol.50 08JD09
  • Peer Reviewed
• [Journal Article] Optical study of the low discharge power magnetron sputtering plasma using pure tungsten target (2010)
  • Author(s): T. Matsunaga, T. Ohshima, H. Kawasaki, T. Kaneko, Y. Yagyu, Y. Suda
  • Journal Title: Jpn. J. Appl. Phys. Volume: Vol.49 08JF04
  • Peer Reviewed
• [Journal Article] Preparation of ITO Thin Films by Pulsed Laser Deposition for Use as Transparent Electrodes in Electrochromic Dislay Devices (2010)
  • Author(s): T. Ohshima, Y. Yagyu, H. Kawasaki, Y. Suda
  • Journal Title: Transactions of the Materials Research Society of Japan Volume: Vol.35[3] Pages: pp.583-587
  • Peer Reviewed
• [Presentation] Two dimensional images of the multi electrodes gliding arc discharge (2012)
  • Author(s): H. Kawasaki, T. Ohshima, T. Ihara, Y. Yagyu, Y. Suda, S. Aoqui, T. Kawasaki, F. Mitsugi, Y. Tajima, T. Baba, Y. Takeuchi
  • Organizer: ICMAP2012
  • Place of Presentation: Jeju, Korea
  • Year and Date: 20120704-06
• [Presentation] Preparation of Alq3 thin films using a pulsed laser deposition method with cooling target by liquid nitrogen、65th GEC2012 (2012)
  • Author(s): Y.Suda, T. Ohshima, H. Kawasaki, Y. Yagyu, T. Ihara
  • Organizer: AT&T Conference Center on Univ. of Texas
  • Place of Presentation: USA, NW1.00032
  • Year and Date: 2012-10-24
• [Presentation] Observation of the plasma plume in pulsed laser deposition using a Ti powder target (2012)
  • Author(s): H. Kawasaki, T. Ohshima, K. Arafune, D. Taniyama, T. Ihara, Y. Yagyu and Y. Suda
  • Organizer: BIOELECTRICS 2012
  • Place of Presentation: 熊本
  • Year and Date: 2012-09-07
• [Presentation] Growth of carbon nanotubes in normal 4He and superfluid 4He by arc discharge method (2012)
  • Author(s): H. Kawasaki, H.Tomioka, T. Shigematsu, K. Imasaka, T. Ohshima, T. Ihara, Y. Yagyu, Y. Suda
  • Organizer: 24th ICEC-ICMC2012
  • Place of Presentation: 福岡
  • Year and Date: 2012-05-17
• [Presentation] Pulsed Laser Deposition of Alq3 Thin Films Using Target Cooling by Liquid Nitrogen (2011)
  • Author(s): T. Ohshima, A. Kawashima, H. Kawasaki, Y. Suda, Y. Yagyu
  • Organizer: 第21回MRS-J
  • Place of Presentation: 横浜
  • Year and Date: 2011-12-20