Depletion layer studies in organic films: Low frequency capacitance measurements in polycrystalline tetracene
Depletion layer studies in organic films: Low frequency capacitance measurements in polycrystalline tetracene
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有机薄膜中的耗尽层研究：多晶并四苯中的低频电容测量
DOI：
10.1063/1.437729
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发表时间：
1979
影响因子：
4.4
通讯作者：
A. C. Albrecht
中科院分区：
文献类型：
--
作者：
A. Twarowski;A. C. Albrecht
对（金属1 →有机物→金属2）电池的电特性的研究还没有导致它们起源的一致模型。一方面，电导率测量表明许多有机材料表现为绝缘体（低载流子浓度），而这些相同材料中的一些材料的光伏特性可以使用半导体物理学的概念来合理化，这表明有机膜具有高载流子浓度。在本文中，一个（铝并四苯Au或Nesatron）电池的电容的电压依赖性进行了研究，试图更好地理解这一矛盾。该电池的电性能解释的模型，其中耗尽层是由一个高密度的不动的陷阱电荷。捕获的电荷可以被调动的光，然后发现的证据肖特基耗尽区（厚2000）的并四苯膜。
The study of the electrical properties of (metal 1‖ organic ‖metal 2) cells has not led to a consistent model of their origin. On the one hand, conductivity measurements suggest that many organic materials behave as insulators (low carrier concentrations) while photovoltaic properties of some of these same materials may be rationalized using the concepts of semiconductor physics, suggesting that the organic film has a high carrier concentration. In this paper the voltage dependence of the capacitance of a (Al‖tetracene‖Au or Nesatron) cell is investigated in an attempt to better understand this contradiction. The electrical properties of this cell are explained in terms of a model in which depletion layers are made from a high density of immobile trapped charge. The trapped charge can be mobilized by light and then evidence is found for a Schottky depletion region (∼2000 A thick) in the tetracene film.