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基于酞菁钕为光敏层的红光光敏异质结有机场效应晶体管
发表时间：2014-02-15 浏览量：1955 下载量：845
| 全部作者： | 汤瑜，姚博，吕文理，周茂清，郑挺才，刘金凤，罗消，彭应全 |
| 作者单位： | 兰州大学物理科学与技术学院 |
| 摘 要： | 合成了一种高吸收系数(~1.7×105 cm-1)的金属酞菁类光敏材料酞菁钕（NdPc2），该材料薄膜在可见光区638 nm处存在吸收峰，吸收峰靠近红光常用波段(650~670 nm)；报道了NdPc2/C60异质结光敏有机场效应晶体管（organic field effect transistors, OFETs），该器件以NdPc2为光敏层，高迁移率材料C60为载流子传输层，性能明显优于NdPc2单层器件。在入射光强为1.41 m·W/cm2时，NdPc2/C60异质结器件的光响应度达到最大值0.8 A/W，是NdPc2单层器件的62倍。可以得出，合成的具有高吸收系数的NdPc2可作为光敏材料使用，同时NdPc2/C60异质结器件非常适用于红光探测器。 |
| 关 键 词： | 半导体物理学；NdPc2/C60异质结；光敏有机场效应晶体管；光响应度；酞菁钕 |
| Title： | Red light sensitive heterojunction organic field-effect transistors based on neodymium phthalocyanine as photosensitive layer |
| Author： | LIU Jinfeng, LUO Xiao, PENG Yingquan |
| Organization： | School of Physical Science and Technology, Lanzhou University |
| Abstract： | A metal phthalocyanine light-sensitive material, neodymium phthalocyanine (NdPc2), which has high absorption coefficient(~1.7�05 cm-1) was synthesized. The highest absorption peak in visible region of NdPc2 film is centered at 638 nm which is near the commonly used wavelength of red light (650-670 nm). NdPc2 and C60 were used in heterojunction photoresponsive organic field-effect transistors (photOFETs). In this device, NdPc2 was used as photosensitive layer, and n-type high mobility ratio material C60 was used as the carrier transport layer. Compared with single-layer NdPc2 photOFETs (NdPc2-photOFETs), C60/NdPc2 heterojunction photOFETs (C60/NdPc2-photOFETs) showed a better performance. The maximum photoresponsivity of C60/NdPc2-photOFETs is 0.8 A/W with the incident light intensity of 1.41 mW/cm2, which is approximately 62 times larger than that of NdPc2-photOFETs at the same condition. It is concluded that the synthesized NdPc2 with high absorption coefficient can be used as photosensitive material and C60/NdPc2-photOFETs are very suited for detecting red light. |
| Key words： | semiconductor physics; NdPc2/C60 heterojunction; photoresponsive organic field-effect transistors; photoresponsivity; neodymium phthalocyanine |
| 发表期数： | 2014年2月第3期 |
| 引用格式： | 汤瑜，姚博，吕文理，等. 基于酞菁钕为光敏层的红光光敏异质结有机场效应晶体管[J]. 中国科技论文在线精品论文，2014，7（3）：247-253. |
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