期刊
MATERIALS
卷 9, 期 4, 页码 -出版社
MDPI
DOI: 10.3390/ma9040299
关键词
ZnO nanostructures; spin-coating; hydrothermal synthesis; microwave; UV sensors
类别
资金
- FEDER funds through the COMPETE Programme
- National Funds through FCT (Portuguese Foundation for Science and Technology) [BPD/76992/2011, UID/CTM/50025/2013, EXCL/CTM-NAN/0201/2012]
- Portuguese Foundation for Science and Technology through the AdvaMTech PhD program scholarship [PD/BD/114086/2015]
- Fundação para a Ciência e a Tecnologia [PD/BD/114086/2015] Funding Source: FCT
The present work reports the influence of zinc oxide (ZnO) seed layer annealing temperature on structural, optical and electrical properties of ZnO nanorod arrays, synthesized by hydrothermal method assisted by microwave radiation, to be used as UV sensors. The ZnO seed layer was produced using the spin-coating method and several annealing temperatures, ranging from 100 to 500 degrees C, have been tested. X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM) and spectrophotometry measurements have been used to investigate the structure, morphology, and optical properties variations of the produced ZnO nanorod arrays regarding the seed layer annealing temperatures employed. After the growth of ZnO nanorod arrays, the whole structure was tested as UV sensors, showing an increase in the sensitivity with the increase of seed layer annealing temperature. The UV sensor response of ZnO nanorod arrays produced with the seed layer annealed temperature of 500 degrees C was 50 times superior to the ones produced with a seed layer annealed at 100 degrees C.
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