Polarization-sensitive photoconductivity in aligned polyfluorene layers
Polarization-sensitive photoconductivity in aligned polyfluorene layers
复制标题
定向聚芴层中的偏振敏感光电导
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
R. Mahrt
中科院分区：
文献类型：
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作者：
Achmad Zen;D. Neher;C. Bauer;U. Asawapirom;U. Scherf;R. Hagen;S. Kostromine;R. Mahrt
偏振敏感光电二极管是利用在光取向液晶光可寻址聚合物上取向的取向聚芴层构建的。二极管表现出光电流对入射光偏振的明显依赖性，在吸收开始时产生超过 10 倍的偏振灵敏度。作用光谱对于垂直于聚合物排列方向的偏振光是对称的，而它并不简单地与平行偏振光的吸收特性相关。考虑到聚芴层内的干扰效应，可以利用戈什模型来解释这些数据。
Polarization-sensitive photodiodes have been constructed utilizing an aligned polyfluorene layer oriented on a photoaligned liquid crystalline photoaddressable polymer. The diodes exhibit a pronounced dependence of the photocurrent on the polarization of the incident light, yielding a polarization sensitivity of more than a factor of 10 at the onset of the absorption. The action spectrum is symbatic for light polarized perpendicular to the polymer alignment direction whereas it does not simply correlate with the absorption characteristics for parallel polarized light. The data can be explained utilizing Ghosh’s model taking into account interference effects within the polyfluorene layer.