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OALib Journal期刊
ISSN: 2333-9721
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聚(3-己基)噻吩/紫精掺杂聚氧乙烯体系的电双稳态存储特性研究
DOI: 10.11777/j.issn1000-3304.2015.15115, PP. 1464-1470
Keywords: 聚(3-己基)噻吩,乙基紫精二高氯酸盐,聚合物固体电解质,电存储,共聚焦激光扫描显微镜技术
Abstract:
制备基于聚(3-己基)噻吩/(乙基紫精二高氯酸盐掺杂聚氧乙烯)(P3HT/(PEO+EV))双聚合物薄膜层的OFET型器件,研究P3HT/(PEO+EV)体系的电响应特性.结果表明该体系可以在+3V的电压下由OFF态跃迁为ON态(写入信号),而在-3V的电压下由ON态转换成为OFF态(擦除信号);在OFF和ON态转换之后,导电态能保持稳定,因此该体系具备良好的阻变电双稳态存储特性,开关电流比高达105.尽管器件ON态电流随时间表现出一定的衰减,在经过大约2800s读取操作以后,体系仍然可以进行写入/擦除操作.采用共聚焦激光扫描显微镜技术研究体系的电存储机理,结果显示信号写入过程中P3HT层发出的荧光随着施加电压由S极向D极逐渐淬灭,淬灭过程大约需要0.167s,这表明P3HT极化子在S电极生成,并在沟道内传递至D电极,传递速率大约是120μm/s;而信号擦除过程荧光快速恢复,表明P3HT极化子被还原成为本征态P3HT.
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