Perylene Tetracarboxylic Diimide: Characterization and Its Role in the Electrical Properties of an Ag/N-BuHHPDI/PEDOT:PSS/p-Si Heterojunction Device

  • Muhammad Zeb
  • Muhammad Tahir
  • Fida Muhammad
  • Dil Nawaz Khan
  • Muhammad Hassan Sayyad
  • Suhana Mohd Said
  • Fazal WahabEmail author


This paper reports on the thin film characterization of a synthesized small molecular semiconductor N-butyl-N′-(6-hydroxyhexyl) perylene-3,4,9,10-tetracarboxylic acid diimide (N-BuHHPDI) and its potential use in Ag/N-BuHHPDI/PEDOT:PSS/p-Si heterojunction device. The device is fabricated using spin coating of a conducting polymer PEDOT:PSS on p-Si substrate followed by thermal deposition of a 100-nm-thin layer of N-BuHHPDI. To complete the fabrication of Ag/N-BuHHPDI/PEDOT:PSS/p-Si heterostructure, silver (Ag) is used as the top electrode. The device shows non-ohmic and asymmetrical current–voltage (IV) characteristics in dark conditions at 25°C which confirm the successful formation of rectifying heterojunction. Various diode parameters such as ideality factor (n), barrier height (ϕb), series resistance (Rs) and charge carrier mobility across the interface of the heterojunction are measured from the IV characteristics. The non-ideal behavior of the diode is correlated with the film morphology obtained by atomic force microscopy. Fourier transformed infrared spectroscopy is performed to confirm the successful preparation of N-BuHHPDI. The fluorescence lifetime (22 ns) of the N-BuHHPDI thin film is measured via fluorescence spectroscopy. Different charge conduction mechanisms including the dominant one are studied for the fabricated device.


Heterojunction current–voltage (IV) characteristics atomic force microscopy conduction mechanisms perylene diimide 


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The authors are thankful to the Abdul Wali Khan University Mardan ( Pakistan and the GIK Institute ( Pakistan for providing the research materials and facilities.


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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  1. 1.Department of PhysicsAbdul Wali Khan University MardanMardanPakistan
  2. 2.Department of PhysicsGovernment Post Graduate College AbbotabadAbbotabadPakistan
  3. 3.Faculty of Engineering SciencesGhulam Ishaq Khan Institute of Engineering Sciences and TechnologyTopiPakistan
  4. 4.Department of Electrical Engineering, Faculty of EngineeringUniversity of MalayaKuala LumpurMalaysia
  5. 5.Department of PhysicsKarakoram International UniversityGilgit-BaltistanPakistan

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