Carbon nanotube induced enhancement of electroluminescence of phosphor

Min Jong Bae; Shang Hyeun Park; Tae Won Jeo ng; Jeong Hee Lee; In Taek Han; Yong Wan Jin; Jong Min Kim; Jin-Young Kim; Ji Beom Yoo; Se Gi Yu
August 2009
Applied Physics Letters;8/17/2009, Vol. 95 Issue 7, p071901
Academic Journal
Electroluminescence (EL) was observed on conventional cathodoluminescent (CL) phosphor with the incorporation of carbon nanotube (CNT) at ambient air. The role of CNT can be understood as enhancing the local electrical field, which allows electron injection to the active center of phosphor at relatively low operating voltages. In this EL device, the brightness of CL phosphor was significantly improved from no light emission in the case of no addition of CNT to 35 cd/m2 with 1 wt % CNT at 10 kHz of ac 300 V.


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