Journal Article Field emission property of ZnO nanowires prepared by ultrasonic spray pyrolysis

Myo, Than Htay  ,  Hashimoto, Yoshio

84pp.144 - 153 , 2015-08 , ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
NCID:AA10487698
Description
The field emission property of cold cathode emitters utilizing the ZnO nanowires with various conditions prepared by ultrasonic spray pyrolysis technique was discussed. It is found that the emission current was enhanced in the emitters having higher aspect ratio as well as smaller sheet resistance. Applying of post-annealing process, utilization of additional Mo back electrode in the cathode, and coating of Moon the ZnO nanowires resulted in the improvement of the emission current and lowering the threshold voltage. A threshold voltage of about 5.5 V/mu m to obtain 1.0 mu A/cm(2) was achieved in the sample prepared at the growth temperatures varying continuously from 250 degrees C to 300 degrees C. (C) 2015 Elsevier Ltd. All rights reserved.
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