Substrate Dependent Growth of DH6T Small Molecules in Vapor Deposited Thin Films

  • C. Shalu
  • S. Raj Mohan
  • Mukesh P. Joshi
  • Vipul SinghEmail author
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 215)


Substrate dependent growth of DH6T small molecules in the evaporated thin films was studied in order to speculate the role of substrate. XRD data revealed that films grown on both glass and silicon substrates are well ordered, and crystalline in nature with relatively more crystallinity on silicon substrates rather than glass substrate. AFM study showed that step like circular domains with height almost equal to molecular length are formed on both substrates and the grain size is larger on the silicon substrate than on glass. Photoluminescence studies showed that intermolecular interaction is more in the thin films evaporated on silicon substrate.



Authors are grateful to Sophisticated Instrument Centre, IIT Indore for providing XRD facilities. One of the authors, Shalu C. thanks to Ministry of Human Resource and Development (MHRD), India for providing the Teaching Assistantship (TA) to carry out this research work. Author, V. S. would like to thank the director, IIT Indore for providing his constant support and encouragement for research.


  1. 1.
    A. Yassar, Exciton coupling effects in the absorption and photoluminescence of sexithiophene derivatives. J. Phys. Chem. 99, 9155–9159 (1995)CrossRefGoogle Scholar
  2. 2.
    J. Ivanco, Sexithiophene films on clean and oxidized Si(111)Si(111) surfaces: growth and electronic structure. J. Appl. Phys. 96, 2716–2724 (2004)ADSCrossRefGoogle Scholar
  3. 3.
    M.E. Roberts, Water-stable organic transistors and their application in chemical and biological sensors. Proc. Natl. Acad. Sci. 105, 12134 (2008)ADSCrossRefGoogle Scholar
  4. 4.
    Y. Jang, Influence of the dielectric constant of a polyvinyl phenol insulator on the field-effect mobility of a pentacene-based thin-film transistor. Appl. Phys. Lett. 87, 152105 (2005)ADSCrossRefGoogle Scholar

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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • C. Shalu
    • 1
  • S. Raj Mohan
    • 2
  • Mukesh P. Joshi
    • 2
  • Vipul Singh
    • 1
    Email author
  1. 1.Molecular and Nanoelectronics Research Group (MNRG)Discipline of Electrical Engineering, IIT IndoreIndoreIndia
  2. 2.Laser Materials & Processing DivisionRaja Ramanna Center for Advanced TechnologyIndoreIndia

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