Hysteresis behavior of the donor-acceptor-type ambipolar semiconductor for non-volatile memory applications

Young Jin Choi, Jihyun Kim, Min Je Kim, Hwa Sook Ryu, Han Young Woo, Jeong Ho Cho, Joohoon Kang

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Donor-acceptor-type organic semiconductor molecules are of great interest for potential organic field-effect transistor applications with ambipolar characteristics and non-volatile memory applications. Here, we synthesized an organic semiconductor, PDPPT-TT, and directly utilized it in both field-effect transistor and non-volatile memory applications. As-synthesized PDPPT-TT was simply spin-coated on a substrate for the device fabrications. The PDPPT-TT based field-effect transistor showed ambipolar electrical transfer characteristics. Furthermore, a gold nanoparticle-embedded dielectric layer was used as a charge trapping layer for the non-volatile memory device applications. The non-volatile memory device showed clear memory window formation as applied gate voltage increases, and electrical stability was evaluated by performing retention and cycling tests. In summary, we demonstrate that a donor-acceptor-type organic semiconductor molecule shows great potential for ambipolar field-effect transistors and non-volatile memory device applications as an important class of materials.

Original languageEnglish
Article number301
Issue number3
Publication statusPublished - 2021 Mar

Bibliographical note

Funding Information:
Funding: This research was funded by the National Research Foundation of Korea (NRF) grant, funded by the Korean Government (MSIT) (2020R1C1C1009381, 2019R1A6A1A11044070) and the Materials & Components Technology Development Program (20006537, Development of High Per‐ formance Insulation Materials for Flexible OLED Display TFT) funded By the Ministry of Trade, Industry & Energy (MOTIE, Korea).

Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.


  • Ambipolar field-effect transistors
  • Charge trapping
  • Donor-acceptor-type molecules
  • Non-volatile memory
  • Organic semiconductors

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Mechanical Engineering
  • Electrical and Electronic Engineering


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