Exploiting multiple percolation in two-terminal memristor to achieve a multitude of resistive states
Exploiting multiple percolation in two-terminal memristor to achieve a multitude of resistive states
复制标题
DOI：
10.1039/d1tc00987g
复制
发表时间：
2021-06-22
影响因子：
6.4
通讯作者：
Saha, Petr
中科院分区：
文献类型：
--
作者：
Foulger, Stephen H.;Bandera, Yuriy;Saha, Petr
作为构建神经形态网络的最有可能的前景，用忆阻器模拟突触反应已引起微电子产业界和学术界的关注。为此，合成了一种新合成的含咔唑环的杂化共轭聚合物，即poly(4-(6-(9H-carbazol-9-yl)hexyl)-4H-dithieno[3，2-b:2‘，3’-d]吡咯(Pc6DTP)(Pc6DTP)，用于制备具有Al/Pc6DTP/ITO构型的双端忆阻器，其中聚合物被电化学掺杂。对电压尖峰的标志性生物突触反应，如增强和抑制以及尖峰时序依赖的可塑性。该设备能够通过1 mV脉冲进行编程，只需要100 fJ的能量。推测聚合物的电压依赖导电性质是通过两种协同机制发生的，一种与沿共轭聚合物主链的共轭有关，另一种与悬挂杂环有关。
As the most likely prospect for the construction of neuromorphic networks, the emulation of synaptic responses with memristors has attracted attention in both the microelectronic industries and the academic environment. To that end, a newly synthesized hybrid conjugated polymer with pendant carbazole rings, that is, poly(4-(6-(9H-carbazol-9-yl)hexyl)-4H-dithieno[3,2-b:2 ',3 '-d]pyrrole) (pC6DTP), was employed in the fabrication of a two-terminal memristor with a Al/pC6DTP/ITO configuration where the polymer was electrochemically doped. Signature biological synaptic responses to voltage spikes were demonstrated, such as potentiation & depression and spike timing dependent plasticity. The device was able to be programed through a 1 mV pulse, requiring only 100 fJ of energy. The voltage-dependent conductive nature of the polymer was speculated to occur through two synergistic mechanisms, one associated with the conjugation along the backbone of the conjugated polymer and one mechanism associated with the pendant heterocyclic rings.