Higher Operating Temperature IR Detectors of the MOCVD Grown HgCdTe Heterostructures

Numerical optimization of an extracted HgCdTe IR-photodiodes for 10.6-mum spectral region operating at room temperature

The electrical and photoelectrical properties of long wavelength nþppþ Hg1 xCdxTe structures have been optimized by using an exact numerical analysis. In this analysis we have been taking into account the degeneracy, non-parabolicty, deviation from thermodynamical equilibrium and graded interfaces. The band diagram, electrical field, carrier mobility, photoelectrical gain, responsivity, noise a...

First results from the new HgCdTe MBE detectors for WFC3 – IR channel

For the IR channel of WFC3 a new type of HgCdTe detector, with 1.7μm cutoff on MBE substrate, is under development at the Rockwell International Science Center . A first batch of array has been produced in summer 1999 and tested at the GSFC Detector Characterization Laboratory (DCL) in September-November 1999. We present the first results of the testing on the prototype HI-101,and in particular...

HgCdTe Heterostructures Grown by MBE on Si(310) for Infrared Photodetectors

Can graphene make better HgCdTe infrared detectors?

We develop a simple and low-cost technique based on chemical vapor deposition from which large-size graphene films with 5-10 graphene layers can be produced reliably and the graphene films can be transferred easily onto HgCdTe (MCT) thin wafers at room temperature. The proposed technique does not cause any thermal and mechanical damages to the MCT wafers. It is found that the averaged light tra...

Operating temperature and the responsivity of split-off band detectors

1350-4495/$ see front matter 2009 Elsevier B.V. A doi:10.1016/j.infrared.2009.05.024 * Corresponding author. Tel.: +1 404 413 6037; fax E-mail address: [email protected] (A.G.U. Perera). A GaAs/AlGaAs heterojunction is used as a spin-split-off band IR detector operating at or around room temperature. This detector structure followed a similar layer architecture to the quantum well IR photo detect...