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Optically triggered infrared photodetector

AuthorsRamiro, Íñigo; Martí Vega, Antonio; Antolín, Elisa; López, Esther; Datas, Alejandro; Luque López, Antonio; Ripalda, José María ; González Díez, Yolanda
Quantum dots
Intermediate band
Issue Date2015
PublisherAmerican Chemical Society
CitationNano Letters 15(1): 224-228 (2015)
Abstract© 2014 American Chemical Society. We demonstrate a new class of semiconductor device: the optically triggered infrared photodetector (OTIP). This photodetector is based on a new physical principle that allows the detection of infrared light to be switched ON and OFF by means of an external light. Our experimental device, fabricated using InAs/AlGaAs quantum-dot technology, demonstrates normal incidence infrared detection in the 2-6 μm range. The detection is optically triggered by a 590 nm light-emitting diode. Furthermore, the detection gain is achieved in our device without an increase of the noise level. The novel characteristics of OTIPs open up new possibilities for third generation infrared imaging systems (Rogalski, A.; Antoszewski, J.; Faraone, L. J. Appl. Phys. 2009, 105 (9), 091101).
Publisher version (URL)http://dx.doi.org/10.1021/nl503437z
Identifierse-issn: 1530-6992
issn: 1530-6984
Appears in Collections:(IMN-CNM) Artículos
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