Phthalocyanine-Cored Star-Shaped Polystyrene for Nano Floating Gate in Nonvolatile Organic Transistor Memory Device

Junko Aimi, Chen Tsyr Lo, Hung Chin Wu, Chih Feng Huang, Takashi Nakanishi, Masayuki Takeuchi, Wen Chang Chen

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

A novel non-volatile organic memory device is developed based on an organic field effect transistor (OFET) with a dielectric layer of a four-armed, star-shaped polymer featuring a copper phthalocyanine (CuPc) core. The CuPc core unit of the star-shaped polystyrene (CuPc-PS4) self-assembles to form aggregates via π–π interactions, which are isolated and dispersed in the polymer thin film. The OFET memory device employing CuPc-PS4 shows significant hole-trapping characteristics with a high memory ON/OFF current ratio of 107, long retention ability of over 104 s, and good endurance of more than 100 cycles, which is attributed to a flash-type memory. The novel polymer design with CuPc core assemblies inside the polymer matrix is a promising candidate for nano floating gates in non-volatile OFET memory.

Original languageEnglish
Article number1500300
JournalAdvanced Electronic Materials
Volume2
Issue number2
DOIs
Publication statusPublished - 2016 Feb 1
Externally publishedYes

Keywords

  • nano floating gates
  • organic transistor memory
  • phthalocyanine
  • star polymers

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

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