Browsing by Author "Lorentzen, Torgeir"

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Descending Infrared Transmission Spectra of CdZnTe Substrates Due to Surface Roughness

Selvig, Espen; Kongshaug, Kjell Ove; Haakenaasen, Randi; Lorentzen, Torgeir; Brudevoll, Trond (2019-06-11)

(111)B-oriented Cd0.96Zn0.04Te substrates with rough surfaces have been found to have infrared (IR) transmission spectra which decrease rapidly in intensity as the photon energy increases. The rough surfaces were produced ...
Effect of the Series Resistance on the Current Response of a HgCdTe Avalanche Photodiode Under High-intensity Nanosecond Irradiation

Storebø, Asta Katrine; Brudevoll, Trond; Selvig, Espen; Hansen, Runar Wattum; Lorentzen, Torgeir; Haakenaasen, Randi (2022-05-10)

We investigate the nonlinear signal current response of a Hg0.72Cd0.28Te avalanche photodiode (APD) irradiated by high-intensity, finite-duration laser pulses. At high irradiation levels and/or high gains, carrier-induced ...
Improved Passivation Effect Due to Controlled Smoothing of the CdTe-HgCdTe Interface Gradient by Thermal Annealing

Haakenaasen, Randi; Selvig, Espen; Heier, Anne Cathrine; Lorentzen, Torgeir; Trosdahl-Iversen, Laila (2019-07-11)

HgCdTe films grown by liquid phase epitaxy were passivated with CdTe grown by molecular beam epitaxy. A series of annealing tests with different temperatures and durations were then carried out in order to reach a two-fold ...