Microfabrication and characterization of deuterated L-alanine doped triglycine sulfate (DLATGS) detector for IR application

The dielectric and IR pyroelectric properties of a commercially available deuterated l-alanine-doped triglycine sulfate (DLATGS) material in wafer and microfilm form have been investigated experimentally. The DLATGS wafer exhibits a novel ferroelectric behavior at room temperature with a dielectric constant and loss tangent of 17 and 0.047 at 1 kHz, respectively. In contrast, The DLATGS microfilm shows an exceptional IR properties at frequency of 1 kHz in the room temperature. The results and analysis of DLATGS detector at 1 kHz using dielectric and IR pyroelectric test station show a specific detectivity (D*) between (2.61-3.44) x 10(8) (cm Hz(1/2)/W) with relatively low signal-to-noise ratio between (3.35-4.42) x 10(-10) W/root Hz. The measured IR pyroelectric and dielectric results of DLATGS detector are greatly improved compared to standard values. The proposed results can be used in many applications, including, but not limited to: Fourier transform infrared, air quality monitoring, alcohol detection, anesthesiology testing, fire alarm systems, IR-flame detection, atmospheric temperature measurement, biomedical imaging, border patrol systems, earth resource detection, engine analysis, gas analyzers, human sensors, IR detection and spectrometers, and laser detection.