TY - JOUR
T1 - The effect of temperature and voltage on the current in selenium film
AU - Thomas, Sunil
AU - Qamhieh, Naser
AU - Mahmoud, Saleh T.
N1 - Funding Information:
The authors acknowledge the research project (No. 31S313) funded by the United Arab Emirates University Program for Advanced Research (UPAR).
Publisher Copyright:
© 2019 Elsevier Ltd.
PY - 2019
Y1 - 2019
N2 - This study aims to explore the influence of temperature and voltage on the current in selenium thin films. Selenium films (∼2 lm thick) were synthesized by thermal evaporation. The current-voltage (I-V) curves were measured at different temperatures and examined to study the effect of heating and cooling on the sample. The change in the current by varying temperature, between room temperature and 400 K, is described based on amorphous to crystalline phase transition. The dependence of current on voltage, at each temperature, suggests that the resistance does not depend on the voltage when the film is amorphous and becomes voltage-dependent after the crystallization. The voltage dependence is explained in terms of potential energy barriers at the boundaries between the amorphous and crystalline regions created at high temperatures.
AB - This study aims to explore the influence of temperature and voltage on the current in selenium thin films. Selenium films (∼2 lm thick) were synthesized by thermal evaporation. The current-voltage (I-V) curves were measured at different temperatures and examined to study the effect of heating and cooling on the sample. The change in the current by varying temperature, between room temperature and 400 K, is described based on amorphous to crystalline phase transition. The dependence of current on voltage, at each temperature, suggests that the resistance does not depend on the voltage when the film is amorphous and becomes voltage-dependent after the crystallization. The voltage dependence is explained in terms of potential energy barriers at the boundaries between the amorphous and crystalline regions created at high temperatures.
KW - Conductance
KW - Direct current
KW - Electrical properties
KW - Selenium
KW - Thin film
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U2 - 10.1016/j.matpr.2020.04.230
DO - 10.1016/j.matpr.2020.04.230
M3 - Conference article
AN - SCOPUS:85100187768
SN - 2214-7853
VL - 33
SP - 1333
EP - 1335
JO - Materials Today: Proceedings
JF - Materials Today: Proceedings
T2 - 2019 International Conference on Photochemistry and Sustainable Energy, ICPSE 2019
Y2 - 16 October 2019 through 19 October 2019
ER -