期刊
MATERIALS
卷 10, 期 11, 页码 -出版社
MDPI
DOI: 10.3390/ma10111308
关键词
ZnO; nanorod substrates; microwave irradiation; UV sensors
类别
资金
- FEDER funds through the COMPETE 2020 Programme
- FCT (Portuguese Foundation for Science and Technology) [BPD/76992/2011, BD/85587/2012, BPD/84215/2012]
- [POCI-01-0145-FEDER]
- [UID/CTM/50025/2013]
- Fundação para a Ciência e a Tecnologia [UID/CTM/50025/2013] Funding Source: FCT
In the present work, tracing and Whatman papers were used as substrates to grow zinc oxide (ZnO) nanostructures. Cellulose-based substrates are cost-efficient, highly sensitive and environmentally friendly. ZnO nanostructures with hexagonal structure were synthesized by hydrothermal under microwave irradiation using an ultrafast approach, that is, a fixed synthesis time of 10 min. The effect of synthesis temperature on ZnO nanostructures was investigated from 70 to 130 degrees C. An Ultra Violet (UV)/Ozone treatment directly to the ZnO seed layer prior to microwave assisted synthesis revealed expressive differences regarding formation of the ZnO nanostructures. Structural characterization of the microwave synthesized materials was carried out by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The optical characterization has also been performed. The time resolved photocurrent of the devices in response to the UV turn on/off was investigated and it has been observed that the ZnO nanorod arrays grown on Whatman paper substrate present a responsivity 3 times superior than the ones grown on tracing paper. By using ZnO nanorods, the surface area-to-volume ratio will increase and will improve the sensor sensibility, making these types of materials good candidates for low cost and disposable UV sensors. The sensors were exposed to bending tests, proving their high stability, flexibility and adaptability to different surfaces.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据