By Topic

A high-Tc superconductor bolometer on a silicon nitride membrane

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

12 Author(s)
Sanchez, S. ; MESA Res. Inst., Twente Univ., Enschede, Netherlands ; Elwenspoek, M. ; Chengqun Gui ; de Nivelle, M.J.M.E.
more authors

In this paper, we describe the design, fabrication, and performance of a high-Tc GdBa2Cu3O7-δ superconductor bolometer positioned on a 2× 2-mm2 1-μm-thick silicon nitride membrane. The bolometer structure has an effective area of 0.64 mm2 and was grown on a specially developed silicon-on-nitride (SON) layer. This layer was made by direct bonding of silicon nitride to silicon after chemical mechanical polishing. The operation temperature of the bolometer is 85 K. A thermal conductance G=3.3·10-5 W/K with a time constant of 27 ms has been achieved. The electrical noise equivalent power (NEP) at 5 Hz is 3.7·10-2 WHz-1/2, which is very close to the theoretical phonon noise limit of 3.6·10-12 WHz -1/2, meaning that the excess noise of the superconducting film is very low. This bolometer is comparable to other bolometers with respect to high electrical performance. Our investigations are now aimed at decreasing the NEP for 84-μm radiation by further reduction of G and adding an absorption layer to the detector. This bolometer is intended to be used as a detector in a Fabry-Perot (FP)-based satellite instrument designed for remote sensing of atmospheric hydroxyl

Published in:

Microelectromechanical Systems, Journal of  (Volume:7 ,  Issue: 1 )