Title :
Photoconductive Gain of Vertical ZnO Nanorods on Flexible Polyimide Substrate by Low-Temperature Process
Author :
Chen, T.P. ; Young, Sheng-Joue ; Chang, S.J. ; Hsiao, C.H.
Author_Institution :
Inst. of Micro-Electron. & the Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan
Abstract :
In this investigation, vertical zinc oxide (ZnO) nanorods were synthesized on flexible polyimide (PI) substrate by a simple aqueous method at a low temperature. The PL spectrum and X-ray diffraction (XRD) spectrum showed the ZnO nanorods had a wurtzite hexagonal phase and growth along the c axis direction. A high photoconductive gain and large responsivity suggest that ZnO nanorods were sensitive to UV light that was due to ZnO nanorods had high surface-to-volume ratio of nanorods and provided an efficient light trapping absorption.
Keywords :
II-VI semiconductors; X-ray diffraction; nanorods; photodetectors; wide band gap semiconductors; zinc compounds; PL spectrum; UV light; X-ray diffraction spectrum; XRD spectrum; ZnO; flexible PI substrate; flexible polyimide substrate; high photoconductive gain; light trapping absorption; low-temperature process; surface-to-volume ratio; vertical zinc oxide nanorod photodetector; wurtzite hexagonal phase; Nanobioscience; Photodetectors; Polyimides; Substrates; X-ray scattering; Zinc oxide; Flexible; nanorod; photosensor; vertical zinc oxide (ZnO);
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2011.2160254
