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

Volume

11

Issue

12

fYear

2011

Firstpage

3457

Lastpage

3461

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);

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2011.2160254

Filename

5910347