Tuning the Field-Emission Properties of Tungsten Oxide Nanorods


  • The authors are grateful to the financial support from the Chinese National Natural Science Foundation (50225102, 50131020), and the partial support of the Chinese Education Ministry (200133), and the Science and Technology Ministry.


original image

The field-emission properties of tungsten oxide nanorods have been shown to depend on phase structure. For example, the turn-on field of WO2.9 nanorods could be as low as 1.2 V μm−1, while that of WO2 nanorods (see picture) was above 7 V μm−1. Thus, the field-emission properties can be tuned by rational control of the WO2 content.