Aligned tungsten oxide nanowires on tungsten (100) substrates

作者：Yu Qingkai^*; Wu Wei; Zhang Jiaming; Liu Biao; Pei Shin Shem

来源：Materials Letters, 2009, 63(26): 2267-2269.

DOI：10.1016/j.matlet.2009.07.053

• Tungsten oxide
• Nanowires
• Alignment
• Field emission

WO(3) nanowires in body center cubic structure were grown on W (100) substrates by heating in an argon atmosphere. Scanning electron microscope and transmission electron microscope characterizations show the WO(3) NWs grew along the [100] crystallographic orientation and were aligned in three directions. The diameter Of WO(3) NWs is in the range of several to 20 nm and the length is up to I pm. Field emission measurements show that the field emission current density can reach 1.8 mA/cm(2) under electrical field 10 V/mu m and the turn-on field can be as low as 2.6 V/mu m.

• 出版日期2009-10-31