"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

Vanadium oxide linear array infrared microbolometer with a novel infrared absorption structure

JIANJUN LAI1,* , BING WANG1, ERJING ZHAO1, XIAOMING WAN1, SIHAI CHEN1

Affiliation

  1. Wuhan National Laboratory for Optoelectronics, 1037 Louyu Road, Wuhan, Hubei, 430074 P.R. China College of Optoelectronic science and Engineering, Huazhong University of Science and Technology, 1037 L

Abstract

A novel long-wave infrared absorption structure containing conducting thin film of TiNx and gold is proposed and simulated with FDTD method. This new structure has shown peak absorbance over 93% and more than 80% average absorbance at 8~12 μm theoretically. Nano-grain vanadium oxide (VOx) uncooled 2×64 linear infrared microbolometers with this new infrared absorption structure have been successfully fabricated. The normalized detectivity of the sensing element at peak wavelength is measured to be about 6 × 108 cmHz1/2 W-1, which is feasible to practical imaging application.

Keywords

Vanadium oxide, Microbolometer, Infrared absorbtion.

Citation

JIANJUN LAI, BING WANG, ERJING ZHAO, XIAOMING WAN, SIHAI CHEN, Vanadium oxide linear array infrared microbolometer with a novel infrared absorption structure, Optoelectronics and Advanced Materials - Rapid Communications, 4, 10, October 2010, pp.1481-1484 (2010).

Submitted at: Aug. 28, 2010

Accepted at: Oct. 14, 2010