Evolution of the Impurity Photoconductivity in CdHgTe Epitaxial Films with Temperature

Svetikova, T. A. Uaman; Иконников, А. В.; Rumyantsev, V. V.; Козлов, Д. В.; Chernichkin, V. I.; Galeeva, A. V.; Варавин, В. С.; Михайлов, Н. Н.; Dvoretskii, S. A.; Морозов, С. В.; Гавриленко, В. И.

doi:10.1134/s1063782619090240

Search citation statements

Order By: Relevance

Paper Sections

Select...

Methods1

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2021

2023

Publication Types

Select...

Article2

Relationship

Self Cite0

Independent2

Authors

Journals

Cited by 2 publications

(1 citation statement)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The samples were mounted in the Oxford Instruments "OptistatCF" flow cryostat, which was installed into the spectrometer so that the sample was placed in the focus of the radiation beam. The measurement scheme is described in detail in [22].…”

Section: Methodsmentioning

confidence: 99%

Photoconductivity spectroscopy of arsenic-related acceptors in HgCdTe

Ikonnikov,

Rumyantsev,

Sotnichuk

et al. 2023

Semicond. Sci. Technol.

View full text Add to dashboard Cite

The arsenic impurity is widely considered to be the best choice for p-type doping of HgCdTe ternary alloys, which has been a formidable problem for decades. This work studies the terahertz photoconductivity (PC) of Hg1–xCdxTe with x ~ 0.22 doped with arsenic and subjected to the activation annealing to obtain p-type conductivity. In addition to the inevitable photoexcitation lines of mercury vacancies, which act as double acceptors, the spectra contain a distinctive line associated with the photoexcitation of the arsenic-related acceptor. In contrast to the predictions of the effective mass approximation, the binding energy of the acceptor is found to be about 25 meV. The possible reasons for this unexpectedly high chemical shift, which is not quite consistent with the data recently obtained by the photoluminescence and Hall effect measurements, are discussed.

show abstract

Section: Methodsmentioning

confidence: 99%