Negative capacitance in doped bi-layer organic light-emitting devices

doi:10.1088/1674-1056/20/2/027306

中国物理B ›› 2011, Vol. 20 ›› Issue (2): 27306-027306.doi: 10.1088/1674-1056/20/2/027306

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Negative capacitance in doped bi-layer organic light-emitting devices

李诺, 高歆栋, 谢作提, 孙正义, 丁训民, 侯晓远

Surface Physics Laboratory (National Key Laboratory), Fudan University, Shanghai 200433, China

收稿日期:2010-09-09 修回日期:2010-09-25 出版日期:2011-02-15 发布日期:2011-02-15
基金资助:
Project supported by the Natural Science Foundation of the Shanghai Committee of Science and Technology, China (Grant No. 08JC1402300).

Negative capacitance in doped bi-layer organic light-emitting devices

Li Nuo(李诺),Gao Xin-Dong(高歆栋),Xie Zuo-Ti(谢作提), Sun Zheng-Yi(孙正义), Ding Xun-Min(丁训民),and Hou Xiao-Yuan(侯晓远)^†

Surface Physics Laboratory (National Key Laboratory), Fudan University, Shanghai 200433, China

Received:2010-09-09 Revised:2010-09-25 Online:2011-02-15 Published:2011-02-15
Supported by:
Project supported by the Natural Science Foundation of the Shanghai Committee of Science and Technology, China (Grant No. 08JC1402300).

摘要/Abstract

摘要： This paper reports that the doped bi-layer organic light-emitting devices are fabricated by doping in different regions of the light-emitting layer, the admittance and luminance spectra to characterize the capacitance and luminance of the device are measured. Negative capacitance (NC) appeared at low frequencies when the doped devices are biased with high voltages. The measured phase difference between AC voltage applied across the device and AC current flowing through the device show that the device is inductive when NC appears.

Abstract: This paper reports that the doped bi-layer organic light-emitting devices are fabricated by doping in different regions of the light-emitting layer, the admittance and luminance spectra to characterize the capacitance and luminance of the device are measured. Negative capacitance (NC) appeared at low frequencies when the doped devices are biased with high voltages. The measured phase difference between AC voltage applied across the device and AC current flowing through the device show that the device is inductive when NC appears.

Key words: negative capacitance, doping in different regions, organic light-emitting device

中图分类号: (Polymers; organic compounds)

73.61.Ph

78.60.Fi (Electroluminescence) 78.66.Qn (Polymers; organic compounds)

李诺, 高歆栋, 谢作提, 孙正义, 丁训民, 侯晓远. Negative capacitance in doped bi-layer organic light-emitting devices[J]. 中国物理B, 2011, 20(2): 27306-027306.

Li Nuo(李诺),Gao Xin-Dong(高歆栋),Xie Zuo-Ti(谢作提), Sun Zheng-Yi(孙正义), Ding Xun-Min(丁训民),and Hou Xiao-Yuan(侯晓远) . Negative capacitance in doped bi-layer organic light-emitting devices[J]. Chin. Phys. B, 2011, 20(2): 27306-027306.

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Negative capacitance in doped bi-layer organic light-emitting devices

Negative capacitance in doped bi-layer organic light-emitting devices

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