Abstract
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 °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 °C was 50 times superior to the ones produced with a seed layer annealed at 100 °C.
| Original language | English |
|---|---|
| Article number | 299 |
| Journal | Materials |
| Volume | 9 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2016 |
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Keywords
- Hydrothermal synthesis
- Microwave
- Spin-coating
- UV sensors
- ZnO nanostructures
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Microwave synthesized ZnO nanorod arrays for UV sensors : A seed layer annealing temperature study. / Pimentel, Ana Cláudia Madeira Botas Gomes; Ferreira, Sofia Henriques; Gomes, Daniela da Silva Nunes; Calmeiro, Tomás R.; Martins, Rodrigo; Fortunato, Elvira.
In: Materials, Vol. 9, No. 4, 299, 2016.Research output: Contribution to journal › Article
TY - JOUR
T1 - Microwave synthesized ZnO nanorod arrays for UV sensors
T2 - A seed layer annealing temperature study
AU - Pimentel, Ana Cláudia Madeira Botas Gomes
AU - Ferreira, Sofia Henriques
AU - Gomes, Daniela da Silva Nunes
AU - Calmeiro, Tomás R.
AU - Martins, Rodrigo
AU - Fortunato, Elvira
N1 - This work was partially financed by FEDER funds through the COMPETE 2020 Programme and National Funds through FCT (Portuguese Foundation for Science and Technology) through BPD/76992/2011 and under the projects UID/CTM/50025/2013 and EXCL/CTM-NAN/0201/2012. Sofia Henriques Ferreira acknowledges the support from the Portuguese Foundation for Science and Technology through the AdvaMTech PhD program scholarship PD/BD/114086/2015.
PY - 2016
Y1 - 2016
N2 - 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 °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 °C was 50 times superior to the ones produced with a seed layer annealed at 100 °C.
AB - 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 °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 °C was 50 times superior to the ones produced with a seed layer annealed at 100 °C.
KW - Hydrothermal synthesis
KW - Microwave
KW - Spin-coating
KW - UV sensors
KW - ZnO nanostructures
UR - http://www.scopus.com/inward/record.url?scp=84965049893&partnerID=8YFLogxK
U2 - 10.3390/ma9040299
DO - 10.3390/ma9040299
M3 - Article
VL - 9
JO - Materials
JF - Materials
SN - 1996-1944
IS - 4
M1 - 299
ER -