Rusul  A. Ghazi, Nahida  B. Hasan, 
    Investigation of C-V and Gas Sensor Characteristics of Cd<sub>1-x</sub>Zn<sub>x</sub> S/n-Si Heterojunction Fabricated by Spray Pyrolysis Technique,
    Journal of Engineering and Applied Sciences,
    Volume 13,Issue 14,
    2018,
    Pages 5926-5931,
    ISSN 1816-949x,
    jeasci.2018.5926.5931,
    (https://makhillpublications.co/view-article.php?doi=jeasci.2018.5926.5931)
    Abstract: In this research, Cd<sub>1-x</sub>Zn<sub>x</sub> S thin films were prepared by spray pyrolysis technique on silicon substrate 
at a temperature 360oC. The reverse bias capacitance for Cd<sub>1-x</sub>Zn<sub>x</sub> S/n-Si heterojunciton was measured as a

function of bias voltage at frequency 1MHz . The capacitance decreases with increasing of reverse bias voltage
and increase with vol. of (x), it increases from 334-577 pF with increase of the (x) while the depletion width
decreasing with increasing (x). We noted that these heterojunction are abrupt and the value of built-in potential
decreases from 0.7-0.27 V with increasing of the ZnS vol.%. The sensitivity as a function of operating
temperature in the range 100-300&deg;C for Cd<sub>1-x</sub>Zn<sub>x</sub> Sthin films were prepared by spray pyrolysis technique on glass 
substrate at 360&deg;C. It is obvious that the sensitivity of all films increases with increasing of the operating
temperature.
    Keywords: C-V measurements;zinc sulfide;cadmium sulfide;Spray pyrolysis;sensitivity;operating temperature