Demonstration of HOT photoresponse of MWIR T2SLs InAs/InAsSb photoresistors

Autor: K. Michalczewski, T.Y. Tsai, P. Martyniuk, C.H. Wu
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Bulletin of the Polish Academy of Sciences: Technical Sciences, Vol 67, Iss No. 1, Pp 141-145 (2019)
Druh dokumentu: article
ISSN: 2300-1917
DOI: 10.24425/bpas.2019.127343
Popis: We report on the photoresponse of mid-wavelength infrared radiation (MWIR) type-II superlattices (T2SLs) InAs/InAsSb high operating temperature (HOT) photoresistor grown on GaAs substrate. The device consists of a 200 periods of active layer grown on GaSb buffer layer. The photoresistor reached a 50% cut-off wavelength of 5 µm and 6 µm at 200 K and 300 K respectively. The time constant of 30 ns is observed at 200 K under 1 V bias. This is the first observation of the photoresponse in MWIR T2SLs InAs/InAsSb above 200 K.
Databáze: Directory of Open Access Journals