Investigating the electrical and dielectric properties of undoped amorphous and crystalline selenium films, as well as Se-based composites often give informative results and lead to further understanding of the electrical behavior and conduction/dispersion processes prevailing in the sample. <ref>{{Cite journal|last=Abdul-Gader Jafar|first=M. M.|last2=Nigmatullin|first2=R. R.|date=2001-09-21|title=Identification of a new function model for the AC-impedance of thermally evaporated undoped selenium films using the Eigen-coordinates method|url=http://www.sciencedirect.com/science/article/pii/S004060900101166X|journal=Thin Solid Films|volume=396|issue=1|pages=282–296|doi=10.1016/S0040-6090(01)01166-X}}</ref> <ref>{{Cite journal|last=ABDUL-GADER|first=M. M.|last2=AL-BASHA|first2=MAHMOUD A.|last3=WISHAH|first3=K. A.|date=1998-07-01|title=Temperature dependence of DC conductivity of as-deposited and annealed selenium films|url=http://dx.doi.org/10.1080/002072198134328|journal=International Journal of Electronics|volume=85|issue=1|pages=21–41|doi=10.1080/002072198134328|issn=0020-7217}}</ref> <ref>{{Cite journal|last=I.F.|first=Al-Hamarneh,|last2=B.N.|first2=Bulos,|last3=Abdul-Gader|first3=Jafar, M.M.|title=Effect of isothermal annealing and visible-light illumination on the AC-impedance behavior of undoped selenium thin films|url=http://www.academia.edu/30276102/Effect_of_isothermal_annealing_and_visible-light_illumination_on_the_AC-impedance_behavior_of_undoped_selenium_thin_films|journal=Journal of Non-Crystalline Solids|language=en|volume=355|issue=4-5|issn=0022-3093}}</ref> that are important in the design and manufacturing of electronic devices based on these films.<ref>{{Cite web|url=http://eu.wiley.com/WileyCDA/WileyTitle/productCd-0471143235.html|title=Wiley: Physics of Semiconductor Devices, 3rd Edition - Simon M. Sze, Kwok K. Ng|website=eu.wiley.com|access-date=2017-11-08}}</ref><ref>{{Cite book|url=http://www.springer.com/us/book/9783540434078|title=Broadband Dielectric Spectroscopy {{!}} Friedrich Kremer {{!}} Springer|language=en}}</ref><ref>{{Cite book|url=https://www.worldcat.org/oclc/10084589|title=Dielectric relaxation in solids|last=K.)|first=Jonscher, A. K. (Andrzej|date=1983|publisher=Chelsea Dielectrics Press|isbn=0950871109|___location=London|oclc=10084589}}</ref>
