| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1784116 | Infrared Physics & Technology | 2015 | 5 Pages |
•The sub-monolayer quantum dot infrared photodetector (SML-QDIP) is re-examined.•Original device normal-incidence response was attributed to 3D quantum confinement.•Modeling shows normal-incidence response is really due to optical cavity scattering.•Modeling suggests new designs with improved intrinsic normal-incidence absorption.
The sub-monolayer quantum dot infrared photodetector (SML-QDIP) was proposed as an alternative to the standard QDIP based on Stranski–Krastanow (SK) quantum dots. Theoretical modeling indicates that the normal-incidence photo-response observed in the initial SML-QDIP devices, originally attributed to 3D quantum confinement effect, is most likely the result of optical cavity scattering. Modeling results also suggest candidate SML-QDIP structures with improved intrinsic normal incidence absorption.
