Filamentary resistance switching in phthalocyanine thin films observed by electroluminescence
Filamentary resistance switching in phthalocyanine thin films observed by electroluminescence
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DOI：
10.1063/1.4919648
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发表时间：
2015-04
影响因子：
4
通讯作者：
Meng Qingyu;Xiaochuan He;Q. Mao;Y. Weng;Jianbing Yang;D. Yan;Hongwu Zhao
中科院分区：
文献类型：
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作者：
Meng Qingyu;Xiaochuan He;Q. Mao;Y. Weng;Jianbing Yang;D. Yan;Hongwu Zhao
制备了具有高稳定电阻开关特性的金属酞菁异质结，并利用电致发光（EL）进一步研究了其开关机理。在开关过程中观察到点状电致发光，表明丝状传导引起电阻开关。此外，在酞菁薄膜的畴边界与EL发射位点之间建立了高度相关关系，表明开关过程有利于在有机薄膜的无序区域内发生。提出了一种基于频带的模型来描述电致发光相关的电开关机制。
Metal phthalocyanine heterojunctions with highly stable resistance switching characteristics have been prepared and the switching mechanism has been further investigated by electroluminescence (EL). The point-like EL emission has been observed during switching, demonstrating that the filamentary conduction gives rise to resistance switching. Furthermore, the high correlativity between EL emission sites and domain boundaries of phthalocyanine films has been established, which indicates that the switching process is favorable to occur within the disordered region of organic films. A band-based model has been proposed to describe the EL associated electrical switching mechanism.