摘要
This paper utilizes the brightness-voltage waveform curve to investigate the primary electron in solid state cathodoluminescence. The results indicate that the primary electron is from the interface state of SiO2/MEH-PPV （Poly[2- methoxy-5-（2-ethylhexyloxy）-1,4-phenylenevinylene]） under the lower electric field which contributes to the 580-nm emission. With increasing the electric field, the 405-nm emission is obtained, and under this condition, the origin of the primary electron is mainly from tunneling.
This paper utilizes the brightness-voltage waveform curve to investigate the primary electron in solid state cathodoluminescence. The results indicate that the primary electron is from the interface state of SiO2/MEH-PPV （Poly[2- methoxy-5-（2-ethylhexyloxy）-1,4-phenylenevinylene]） under the lower electric field which contributes to the 580-nm emission. With increasing the electric field, the 405-nm emission is obtained, and under this condition, the origin of the primary electron is mainly from tunneling.
基金
Project supported by the Doctoral Foundation of University of Jinan (Grant No.XBS0845)
the Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University)
Ministry of Education,China (Grant No.2010LOI01)
the Natural Science Foundation of Shandong Province,China (Grant Nos.Y2008A21 and SZR0704)
the Scientific Research Foundation of the Education Department of Shandong Province,China (Grant No.J08LI12)
