Low Noise Nanometer Scale Room-Temperature YBa2Cu3O7-x Bolometers for THz Direct Detection
Journal article, 2014

We present a detailed investigation of the responsivity and the noise in room temperature THz direct detectors made of YBa2Cu3O7-x (YBCO) thin film nano bolometers. The YBCO nano bolometers are integrated with planar spiral antennas covering a frequency range from 100 GHz to 2 THz. The detectors were characterized at 1.6 THz, 0.7 THz, 400 GHz and 100 GHz. The maximum electrical responsivity of 70 V/W and a minimum noise equivalent power (NEP) of 50 pW/Hz0.5 were measured, whereas the highest optical responsivity was 45 V/W. The 1/f noise in nano bolometers is independent on the device volume and can be found as (VN/V)2=6×10-11×1/f Hz-1 for a given modulation frequency f and a dc voltage V.

room temperature operation

bolometer

YBCO film

THz detectors

responsivity

Author

Stella Bevilacqua

Chalmers, Microtechnology and Nanoscience (MC2), Terahertz and Millimetre Wave Laboratory

Serguei Cherednichenko

Chalmers, Microtechnology and Nanoscience (MC2), Terahertz and Millimetre Wave Laboratory

IEEE Transactions on Terahertz Science and Technology

2156-342X (ISSN)

Vol. 4 6 653- 660

Areas of Advance

Information and Communication Technology

Nanoscience and Nanotechnology (2010-2017)

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering

Nano Technology

Infrastructure

Nanofabrication Laboratory

DOI

10.1109/TTHZ.2014.2344435

More information

Created

10/7/2017