Confirmation on origin of primary electron in solid state cathodoluminescence

doi:10.1088/1674-1056/19/6/067803

Abstract 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.

Keywords: primary electron solid state cathodoluminescence organic--inorganic heterostructure

Received: 02 November 2009
Accepted manuscript online:

PACS:	78.60.Hk	(Cathodoluminescence, ionoluminescence)
	73.40.Gk	(Tunneling)
	73.20.-r	(Electron states at surfaces and interfaces)

Fund: 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 Foun

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Huang Jin-Zhao(黄金昭), Li Shi-Shuai(李世帅), Feng Xiu-Peng(冯秀鹏), Wang Pei-Ji(王培吉), and Zhang Zhong(张仲) Confirmation on origin of primary electron in solid state cathodoluminescence 2010 Chin. Phys. B 19 067803

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