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Infrared Detection by Si‐Ti‐C‐O Fibers
Author(s) -
Muto Norio,
Miyayama Masaru,
Yanagida Hiroaki,
Kajiwara Teijiro,
Mori Norihisa,
Ichikawa Hiroshi,
Harada Hirobumi
Publication year - 1990
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1990.tb06533.x
Subject(s) - responsivity , thermistor , infrared , electrical resistivity and conductivity , materials science , black body radiation , analytical chemistry (journal) , electrical resistance and conductance , temperature coefficient , time constant , mineralogy , composite material , radiation , photodetector , optics , chemistry , optoelectronics , physics , electrical engineering , chromatography , quantum mechanics , engineering
Electrical resistivity at 20° to 90°C and infrared (IR) responses (thermal time constant and responsivity of electrical resistance changes) were measured on Si‐Ti‐C‐O fibers. The fibers showed negative temperature coefficient resistance‐temperature characteristics, and the thermistor constant B was 890 to 4760 K. A fast and steady output (resistance change) was observed in response to IR radiation from a 600 K blackbody furnace. The IR response was affected markedly by detector structure; the thermal time constant decreased with decreasing length of the fibers, and the responsivity increased with decreasing number of the fibers. In an IR detector with a separate arrangement of a few ( n =10) fibers with a short length (1 mm) and a low resistivity (80 Ω·cm), a thermal time constant of 3.5 ms and a responsivity of 63 V/W were obtained. A fast and steady IR response of Si‐Ti‐C‐O fibers suggests the possibility of detecting both stationary and moving IR sources.