Open AccessNanoscale rolled‐up InAs quantum dot tube photodetector
Author(s) -
Dastjerdi M.H.T.,
Mi Z.
Publication year - 2014
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2013.4070
Subject(s) - responsivity , quantum dot , photodetector , optoelectronics , materials science , heterojunction , substrate (aquarium) , nanoscopic scale , quantum dot laser , excitation , nanotechnology , semiconductor , physics , semiconductor laser theory , oceanography , quantum mechanics , geology
The first demonstration of a rolled‐up InAs quantum dot tube photodetector is reported, which is fabricated by the selective release of self‐organised InAs/GaAs quantum dot heterostructures from the host substrate. The device exhibits a responsivity of ∼66 mA/W and an external quantum efficiency of ∼8% under 1064 nm excitation at 300 K.