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Key integration technologies for nanoscale FRAMs.

Dong J Jung1, Hyun-Ho Kim, Kinam Kim

  • 1Advanced Technology Development Team 2, Semiconductor R and D Center, Samsung Electronics Company Ltd., Yongin-City, Gyunggi-Do, Korea. djjung@samsung.com

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
|February 16, 2008
PubMed
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Key technologies for 180-nm node ferroelectric random access memory (FRAM) address complex nano-scale integration challenges. Novel approaches ensure robust ferroelectric integration and reliable sensing margins, even under harsh conditions.

Area of Science:

  • Semiconductor device physics
  • Materials science for electronic devices

Background:

  • Nano-scale device dimensions present significant integration challenges for ferroelectric memories.
  • Conventional shrink technology is inadequate for ferroelectric integration due to difficulties with metal-insulator-metal (MIM) capacitors.

Purpose of the Study:

  • To discuss key technologies for 180-nm node ferroelectric random access memory (FRAM) integration.
  • To address the complexities arising from shrinking device dimensions in ferroelectric memory fabrication.

Main Methods:

  • Development of advanced etching technology to minimize plasma damage.
  • Implementation of robust stack technology for ferroelectric material preparation.
  • Utilization of capping technology for cell capacitor encapsulation.

Related Experiment Videos

  • Adoption of vertical conjunction technology for improved cell capacitor connectivity.

    • Main Results:

    • Achieved a peak-to-peak bit-line potential of 675 mV.
    • Ensured a sensing margin of 300 mV in opposite-state retention.
    • Demonstrated reliability after 1000 hours at 150 degrees C.

    Conclusions:

    • Novel integration technologies overcome nano-scale fabrication hurdles in ferroelectric memories.
    • These advancements enable high performance and reliability in advanced FRAM devices.
    • The developed processes are crucial for the continued scaling of ferroelectric memory technology.