Quasi-Nondestructive Read Out of Ferroelectric Capacitor Polarization by Exploiting a 2TnC Cell to Relax the Endurance Requirement

Quasi-Nondestructive Read Out of Ferroelectric Capacitor Polarization by Exploiting a 2TnC Cell to Relax the Endurance Requirement
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利用 2TnC 单元准无损读出铁电电容器极化以放宽耐久性要求

DOI:
10.1109/led.2023.3290940
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发表时间:
2023
影响因子:
4.9
通讯作者:
Ni, Kai
Ni, Kai
中科院分区:
工程技术2区
文献类型:
--
作者:
Xiao, Yi;Deng, Shan;Zhao, Zijian;Faris, Zubair;Xu, Yixin;Huang, Tzu-Jung;Narayanan, Vijaykrishnan;Ni, Kai

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在这项工作中,我们利用2TnC铁电随机存取存储器(FeRAM)单元的设计来实现电容器中铁电极化的准无损读出(QNRO),这可以放宽对铁电薄膜的耐久要求,并充分发挥铁电薄膜和铁电FET(FeFET)的优点。我们证明:i)QNRO传感在实验中成功进行,通断比(/)>103,读取耐久>106循环,可以将FeRAM的耐久要求放宽10%;ii)通过调整金属-铁电-金属电容器(MFM)电容器来读取晶体管面积比和读取晶体管阈值电压(),可以实现单元性能的优化;iii)2TnC单元结构是3D兼容的,能够集成高密度存储解决方案;iv)2TnC单元结构还可以实现FeRAM的存储器中计算(CIM)应用,这还没有得到广泛的探索。有了这项技术,就可以实现以存储和内存为中心的计算。
In this work, we exploit a 2TnC ferroelectric random access memory (FeRAM) cell design to realize the quasi-nondestructive readout (QNRO) of ferroelectric polarization () in a capacitor, which can relax the endurance requirement of the ferroelectric thin film and exploits the benefits of both FeRAM and ferroelectric FET (FeFET). We demonstrate that: i) QNRO sensing ofis conducted successfully in experiment with a ON/OFF ratio (/) > 103,, and read endurance > 106 cycles, which can relax the FeRAM endurance requirement by 10; ii) optimization of the cell performance can be realized by tuning the metal-ferroelectric-metal capacitor (MFM) capacitor to read transistor area ratio and read transistor threshold voltage (); iii) the 2TnC cell structure is 3D-compatible, enabling integration of highly dense memory solution; iv) the 2TnC cell structure also enables compute-in-memory (CIM) applications of FeRAM, which has not been widely explored. With this technology, storage and memory-centric computing can be enabled.
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