Effect of heavy-ion on frequency selectivity of semiconducting polymer/electrolyte heterojunction

被引：5

作者：

Dong, W. S. ^{[1
,2
]}

Zeng, F. ^{[1
,2
]}

Lu, S. H. ^{[1
,2
]}

Li, X. J. ^{[1
,2
]}

Chang, C. T. ^{[1
,2
]}

Liu, A. ^{[1
,2
]}

Pan, F. ^{[1
]}

Guo, D. ^{[3
]}

机构：

[1] Tsinghua Univ, Sch Mat Sci & Engn, Key Lab Adv Mat MOE, Beijing 100084, Peoples R China

[2] Tsinghua Univ, CBICR, Beijing 100084, Peoples R China

[3] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China

来源：

RSC ADVANCES | 2015年 / 5卷 / 119期

基金：

中国国家自然科学基金;

关键词：

EMITTING ELECTROCHEMICAL-CELLS; TIMING-DEPENDENT-PLASTICITY; SOLID POLYMER ELECTROLYTES; SHORT-TERM PLASTICITY; SYNAPSE MODIFICATION; MEMRISTIVE DEVICES; VISUAL-CORTEX; BCM THEORY; CONDUCTIVITY; MODEL;

D O I：

10.1039/c5ra19938g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Heavy ion Nd3+ is introduced into the electrolyte layer to study frequency selectivity of a semiconducting polymer/electrolyte double-layer cell. This cell exhibits long-term depression under low-frequency stimulations and potentiation under high-frequency stimulations by positive triangular pulses, suggesting a conventional learning protocol, i.e., spike-rate-dependent plasticity. The frequency selectivity depends significantly on the input shape due to large ionic size and mass. The input threshold of the frequency selectivity is around the voltage inducing a negative differential resistance (V-NDR) influenced by the loading rate. The typical value of V-NDR is 0.3 V for a loading rate of 100 V s(-1), but V-NDR disappears when the loading rate exceeds 1000 V s(-1). Besides, the frequency selectivity has not been observed under rectangular pulse input. Moreover, the possibility of bidirectional signal transfer has been tested simply by anti-connecting two individual cells. Our study suggests the possibility to realize signal pruning and synthetizing by changing ionic types.

引用

页码：98110 / 98117

页数：8

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