Highly-ordered perpendicularly oriented ZnO nanobelt array films: synthesis, characterization, and application.
ZnO nanobelt array films were prepared using an electrodeposition method with liquid crystal template. The as-prepared sample was amorphous and changed to nanocrystalline ZnO after sintered at 500 degrees C for 1 h. The influences of reaction conditions to the morphology of the samples were checked in detail. When the distance between WE (working electrode) and CE (counter electrode) was 3 mm, the electrodeposition potential was -0.9 V versus SCE (saturated calomel electrode), the electrodeposition temperature was 65 degrees C and the surfactant concentration was 60 wt%, the ZnO nanobelt arrays were densest, most ordered and perpendicularly oriented. The sintered two-layer film was applied as a photoanode of a dye-sensitized solar cell (DSC), and a relatively high short-circuit photocurrent density of 10 mA/cm2 and an overall light-to-energy conversion efficiency of 2.1% were achieved.
State Key Lab of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, People's Republic of China.
Chunfu
C
Lin
Hong
H
Lin
Dongtian
D
Zhuang
Jianbao
J
Li