Photo-Hall-Effect Spectroscopy with Enhanced Illumination in p-Cd1-xMnxTe Showing Negative Differential Photoconductivity
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10387721" target="_blank" >RIV/00216208:11320/18:10387721 - isvavai.cz</a>
Alternative codes found
RIV/68081723:_____/18:00495568
Result on the web
<a href="https://doi.org/10.1103/PhysRevApplied.10.014019" target="_blank" >https://doi.org/10.1103/PhysRevApplied.10.014019</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevApplied.10.014019" target="_blank" >10.1103/PhysRevApplied.10.014019</a>
Alternative languages
Result language
angličtina
Original language name
Photo-Hall-Effect Spectroscopy with Enhanced Illumination in p-Cd1-xMnxTe Showing Negative Differential Photoconductivity
Original language description
The charge-transport properties of semiconductor and semiinsulator materials are strongly controlled by the crystallographic defects manifesting energy states in the bandgap. In this paper, we study deep levels (DLs) in p-type Cd1-xMnxTe by photo-Hall-effect spectroscopy with enhanced illumination. We show that the mobility of minority (925 +/- 11 cm(2) s(-1) V-1) and majority (59.6 +/- 0.4 cm(2) s(-1) V-1) carriers can be deduced directly from the spectra by using proper wavelength and excitation intensity. Four deep levels with ionization energies E-t1 = E-V + 0.63 eV, E-t2 = E-V + 0.9 eV, E-t3 = E-C-1.0 eV, and E-t4 = E-C-1.3 eV are detected and their positions in the bandgap are verified by comparison of photogenerated electron and hole concentrations. The deduced DL model is analyzed by numerical simulations with Shockley-Reed-Hall charge generation-recombination theory and compared with alternative DL models differing in the position of selected DLs relative to E-C and E-V. We show that the consistent explanation of collected experimental data principally limits the applicability of alternative DL models. We also demonstrate the importance of the extended operation photon fluxes (I > 4x10(14) cm(-2) s(-1)) used in the spectra acquisition for correct determination of DL character. Negative differential photoconductivity is observed and studied by charge dynamic theoretical simulations.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
<a href="/en/project/GA16-23165S" target="_blank" >GA16-23165S: Preparation of electric contacts on CdTe and CdZnTe radiation detectors</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review Applied
ISSN
2331-7019
e-ISSN
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Volume of the periodical
10
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
13
Pages from-to
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UT code for WoS article
000439310400001
EID of the result in the Scopus database
2-s2.0-85050385604