Title :
Wavelength tailorable, detectors: Ultraviolet to far-infrared
Author_Institution :
Dept. of Phys. & Astron., Georgia State Univ., Atlanta, GA
Abstract :
Photon detectors responding in UV to-IR including free carrier based homo- and hetero junction interfacial workfunction internal photoemission (HIWIP/HEIWIP) detectors, split-off band detectors, quantum dot infrared photodetectors (QDIPs), and colloidal quantum dot (CQD) detectors are discussed. HIWIP and HEIWIP detectors were focused to develop far-infrared (or terahertz) and dual-band detectors, while split-off detectors and QDIPs were considered for room temperature or TE-cooled operation. QDIPs have also shown multi-color characteristics with narrow response peaks. For ultraviolet/visible/near-infrared multi-band detection, CQD detectors have shown promising results at room temperature.
Keywords :
infrared detectors; optical materials; photodetectors; semiconductor quantum dots; ultraviolet detectors; CQD detector; HEIWIP detector; HIWIP detector; QDIP detector; TE-cooled operation; colloidal quantum dot detector; dual-band detector; free carrier based hetero-junction interfacial workfunction; free carrier based homo-junction interfacial workfunction; internal photoemission; multicolor characteristics; near infrared multiband detection; photon detector; quantum dot infrared photodetector; split-off band detector; split-off detector; temperature 293 K to 298 K; ultraviolet multiband detection; ultraviolet to far-infrared detector; visible multiband detection; Astronomy; Composite materials; Doping; Hip; Infrared detectors; Photoelectricity; Photonic band gap; Quantum dots; Space technology; Temperature;
Conference_Titel :
Advanced Optoelectronic Materials and Devices, 2008. AOMD 2008. 2nd National Workshop on
Conference_Location :
Varanasi
Print_ISBN :
978-0-230-63718-4
