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TCNQ-离子自由基金属盐的电开关现象

ELECTRICAL SWITCHING EFFECT IN SOME TCNQ- ION-RADICAL SALT POWDER COMPACTIONS

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【作者】 过丁叶成杨达林钱人元

【Author】 Guo DING YE CHENG YANG DALIN QIAN RENYUAN(Institute of Chemistry, Academia Sinica)

【机构】 中国科学院化学研究所中国科学院化学研究所

【摘要】 从31种TCNQ离子自由基盐的粉末压片中,观察到Li-TCNQ、Mn(TCNQ)2·3H2O、Cu-TCNQ、Cu(TCNQ)2、Zn(TCNQ)2·xH2O和Ag-TCNQ有电开关效应.粉末压片的直径是5或8mm,厚度300—600um,片的两面分别蒸镀Cu和Al电极.电压超过阈值5-8V时,伏安特性出现突变,电阻值突然下降,从104-105Ω降至102-103Ω.高阻态(关态)与低阻态(开态)的电阻比值约几十到几千.

【Abstract】 Among 31 TONQ- ion-radical salts, electrical switching has been observed in powder compactions of Li-TONQ, Mn(TONQ)2.3H2O, Cu-TCNQ, Cu(TCNQ)2, Zn(TONQ)2.xH2O and Ag-TONQ. These TONQ- ion-radical salt powder compactions were of 5 or 8mm diameter and approximately 300-600 um in thickness with evaporated On and Al electrodes. The current-voltage characteristics revealed an abrupt decrease in resistance from 104-105 to 102-103 at a threshold voltage of 5-8 V. The ratio of Bott/Bon is tens to thousand times.

  • 【文献出处】 应用科学学报 ,Journal of Applied Sciences , 编辑部邮箱 ,1987年02期
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