Effects of substrate temperature on properties of Alq3 amorphous layers prepared by vacuum deposition

K. C. Chiu*, Z. A. Jian, Y. Z. Luo, J. M. Chung, S. J. Tang, M. C. Kuo, J. L. Shen, Wu-Ching Chou, C. S. Yang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations


In this report, various organic Alq3 amorphous layers are prepared by vacuum deposition at different substrate temperatures Tsub (from 30 to 180°C). The surface morphology, structural information, electrical and optical properties of these as-deposited layers are investigated by atomic force microscopy, X-ray diffraction, J-E curves, and photoluminescence studies, respectively. Furthermore, a temperature dependence of dark electrical conductivity σ(T) deduced from J-E curves of these organic amorphous layers is presented. Finally, effects from Tsub on the physical properties of these organic Alq3 amorphous layers are discussed and a model based on a thermal interconversion between Alq3 isomers is proposed to explain these experimental results.

Original languageEnglish
Title of host publicationOrganic Field-Effect Transistors V
StatePublished - 1 Dec 2006
EventOrganic Field-Effect Transistors V - San Diego, CA, United States
Duration: 13 Aug 200615 Aug 2006

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


ConferenceOrganic Field-Effect Transistors V
CountryUnited States
CitySan Diego, CA


  • Electrical conductivity
  • Isomeric transformation
  • Organic amorphous layer
  • Photoluminescence
  • Surface morphology
  • Vacuum deposition

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