Enhanced Recovery Speed of Nanostructured ZnO Photodetectors Using Nanobelt Networks
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Detail(s)
Original language | English |
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Article number | 6202317 |
Pages (from-to) | 1807-1811 |
Journal / Publication | IEEE Journal on Selected Topics in Quantum Electronics |
Volume | 18 |
Issue number | 6 |
Online published | 17 May 2012 |
Publication status | Published - Nov 2012 |
Externally published | Yes |
Link(s)
Abstract
ZnO nanowire (NW) UV photodetectors (PDs) have high sensitivity, while their long recovery time is an important limitation for practical applications. We demonstrated that the recovery time of nanostructured ZnO PDs can be significantly improved using the nanobelt (NB) network. The NB-network PDs are fabricated by only one step without tedious and costly lithography processes. As compared with a recovery time of 32.95 s in the single NB-based PD, a fast recovery time of 0.53 s observed in the NB-network PDs is achieved due to the existence of the NB-NB junction barriers. As the junction barriers accounting for the poor conductivity of NB networks hinder the electron transport, the dark current of the NB-network PDs is two orders of magnitude lower than that of the single NB-based PDs. The NB networks can be applicable to the building structures for nanostructured ZnO-based light-sensing applications with wafer-scale uniformity without compromising the unique photodetection properties exclusively provided by high surface-to-volume ratio and reduced dimensionality of an individual NW/NB.
Research Area(s)
- Nanobelt (NB), nanowire (NW), network, photodetector (PD), photoresponse, Schottky junction, sensor, ZnO
Citation Format(s)
Enhanced Recovery Speed of Nanostructured ZnO Photodetectors Using Nanobelt Networks. / Chen, Cheng-Ying; Chen, Ming-Wei; Hsu, Chia-Yang et al.
In: IEEE Journal on Selected Topics in Quantum Electronics, Vol. 18, No. 6, 6202317, 11.2012, p. 1807-1811.
In: IEEE Journal on Selected Topics in Quantum Electronics, Vol. 18, No. 6, 6202317, 11.2012, p. 1807-1811.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review