JIAO Shu-jie, ZHANG Zhen-zhong, LÜ You-ming, SHEN De-zhen, ZHAO Dong-xu, ZHANG Jiying, YAO Bin, FAN X W. p-n ZnO Light-emitting Diode Fabricated on a-sapphire Substrate[J]. Chinese Journal of Luminescence, 2005,26(4): 542-544
JIAO Shu-jie, ZHANG Zhen-zhong, LÜ You-ming, SHEN De-zhen, ZHAO Dong-xu, ZHANG Jiying, YAO Bin, FAN X W. p-n ZnO Light-emitting Diode Fabricated on a-sapphire Substrate[J]. Chinese Journal of Luminescence, 2005,26(4): 542-544DOI:
A ZnO homo-junction light-emitting diode (LED) was fabricated on a-Al
2
O
3
substrate by plasma-assistant molecular beam epitaxy. NO plasma activated by a radio frequency atomic source was used to grow the p-type ZnO layer of the LED. The current-voltage measurements at low temperatures showed a typical (diode) characteristic with a threshold voltage about 4.0 V at forward bias. Electroluminescence band of the ZnO LED is located at the blue-violet region at 80 K
and the electroluminescence still can be observed up to 200 K.