Abstract
The field-emission properties of transparent tungsten oxide nano-urchin (NU) films deposited on conducting glass substrates were examined. The novel crystalline tungsten oxide NUs consisted of nanowires added to a spherical shell. The WO 2.72 NUs showed better field-emission properties than the WO 3 NUs with a low turn-on field of approximately 5.8 V/μm and a current density as high as 1.3 mA/cm 2 at 7.2 V/mm. The WO x NUs films could be used in FE applications using a large-area glass substrate without the need for a catalyst and a mechanical rubbing or lift-up process. These results have implications for the enhancement of FE properties by further tuning the WO x phases.
| Original language | English |
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| Pages (from-to) | 981-986 |
| Number of pages | 6 |
| Journal | Applied Physics A: Materials Science and Processing |
| Volume | 108 |
| Issue number | 4 |
| DOIs | |
| State | Published - Sep 2012 |