A carbonyl-decorated two-dimensional polymer as a charge-trapping layer for non-volatile memory storage devices with a high endurance and wide memory window

Ruba Al-Ajeil, Abdul Khayum Mohammed, Pratibha Pal, Matthew A. Addicoat, Surabhi Suresh Nair, Dayanand Kumar, Abdul Momin Syed, Ayman Rezk, Nirpendra Singh, Ammar Nayfeh, Nazek El-Atab, Dinesh Shetty

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The charge-trapping mechanism in conjugated polymers is a performance obstacle in many optoelectronic devices harnessed for non-volatile memory applications. Herein, a carbonyl-decorated organic 2D-polymer (TpDb)-based charge-trapping memory device has been developed with a wide memory window (3.2 V) with low programming and erasing voltages of +3/−2 and −3/+2. The TpDb was synthesized by a potentially scalable solid-state aldol condensation reaction. The inherent structural defects and the semi-conjugated nature of the enone network in TpDb offer effective charge-trapping through the localization of charges in specific functional groups (C = O). The interlayer hydrogen bonding enhances the packing density of the 2D-polymer layers thereby improving the memory storage properties of the material. Furthermore, the TpDb exhibits excellent features for non-volatile memory applications including over 10 000 cycles of write/read endurance and a prolonged retention performance of 104 seconds at high temperatures (100 °C).

    Original languageBritish English
    JournalMaterials Horizons
    DOIs
    StateAccepted/In press - 2024

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