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Title of article :
Enhanced UV activation of electrochemically doped Ni in ZnO nanorods for room temperature acetone sensing
Author/Authors :
Ahn، نويسنده , , Hosang and Wang، نويسنده , , Yaqi and Hyun Jee، نويسنده , , Seung and Park، نويسنده , , Minseo and Yoon، نويسنده , , Young Soo and Kim، نويسنده , , Dong-Joo، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2011
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Abstract :
We report the enhanced room temperature gas sensing properties of ZnO nanorods by promoting UV activation via doped Ni in ZnO. Electrodeposition was used to grow nickel-doped ZnO nanorods on flexible substrates integrated with 365 nm UV LED. Nickel concentration varied from 0 at.% to 10 at.% in aqueous solution. An enhanced gas sensing property up to 1.61 at room temperature was measured at 6 at.% Ni-doped ZnO, but showed deteriorated sensitivity due to the formation of a NiO phase at higher Ni concentration. The mechanism for improved sensing properties can be explained by the involvement of weakly bound photo-induced oxygen ions upon the exposure of acetone gas.
Journal title :
Chemical Physics Letters
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