›› 2015, Vol. 24 ›› Issue (4): 47801-047801.doi: 10.1088/1674-1056/24/4/047801

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Optical properties of rubrene thin film prepared by thermal evaporation

陈亮, 邓金祥, 孔乐, 崔敏, 陈仁刚, 张紫佳   

  1. College of Applied Sciences, Beijing University of Technology, Beijing 100124, China
  • 收稿日期:2014-05-13 修回日期:2014-11-03 出版日期:2015-04-05 发布日期:2015-04-05
  • 基金资助:
    Project supported by the Funding for the Development Project of Beijing Municipal Education Commission of Science and Technology, China (Grant No. KZ201410005008), the Natural Science Foundation of Beijing City, China (Grant No. 4102014), and the Graduate Science Fund of the Beijing University of Technology, China (Grant No. ykj-2013-9835).

Optical properties of rubrene thin film prepared by thermal evaporation

Chen Liang (陈亮), Deng Jin-Xiang (邓金祥), Kong Le (孔乐), Cui Min (崔敏), Chen Ren-Gang (陈仁刚), Zhang Zi-Jia (张紫佳)   

  1. College of Applied Sciences, Beijing University of Technology, Beijing 100124, China
  • Received:2014-05-13 Revised:2014-11-03 Online:2015-04-05 Published:2015-04-05
  • Contact: Deng Jin-Xiang E-mail:jdeng@bjut.edu.cn
  • Supported by:
    Project supported by the Funding for the Development Project of Beijing Municipal Education Commission of Science and Technology, China (Grant No. KZ201410005008), the Natural Science Foundation of Beijing City, China (Grant No. 4102014), and the Graduate Science Fund of the Beijing University of Technology, China (Grant No. ykj-2013-9835).

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摘要： Rubrene thin films are deposited on quartz substrates and silver nanoparticles (Ag NPs) films by the thermal evaporation technique. The optical properties of rubrene thin film are investigated in a spectral range of 190 nm-1600 nm. The analysis of the absorption coefficient (α) reveals direct allowed transition with a corresponding energy of 2.24 eV. The photoluminescence (PL) peak of the rubrene thin film is observed to be at 563 nm (2.21 eV). With the use of Ag NPs which are fabricated by radio-frequency (RF) magnetron sputtering on the quartz, the PL intensity is 8.5 times that of as-deposited rubrene thin film. It is attributed to the fact that the surface plasmon enhances the photoluminescence.

关键词: rubrene, optical properties, photoluminescence, surface plasmon enhancement

Abstract: Rubrene thin films are deposited on quartz substrates and silver nanoparticles (Ag NPs) films by the thermal evaporation technique. The optical properties of rubrene thin film are investigated in a spectral range of 190 nm-1600 nm. The analysis of the absorption coefficient (α) reveals direct allowed transition with a corresponding energy of 2.24 eV. The photoluminescence (PL) peak of the rubrene thin film is observed to be at 563 nm (2.21 eV). With the use of Ag NPs which are fabricated by radio-frequency (RF) magnetron sputtering on the quartz, the PL intensity is 8.5 times that of as-deposited rubrene thin film. It is attributed to the fact that the surface plasmon enhances the photoluminescence.

Key words: rubrene, optical properties, photoluminescence, surface plasmon enhancement

中图分类号:  (Optical properties of bulk materials and thin films)

  • 78.20.-e
71.20.Rv (Polymers and organic compounds) 77.84.Jd (Polymers; organic compounds)