Characterization of Cobalt Sulfide Thin Films Synthesized from Acidic Chemical Baths

المؤلفون المشاركون

Abza, Tizazu
Dadi, Dereje Gelanu
Hone, Fekadu Gashaw
Meharu, Tesfaye Chebelew
Tekle, Gebremeskel
Abebe, Eyobe Belew
Ahmed, Kalid Seid

المصدر

Advances in Materials Science and Engineering

العدد

المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-9، 9ص.

الناشر

Hindawi Publishing Corporation

تاريخ النشر

2020-04-30

دولة النشر

مصر

عدد الصفحات

9

الملخص EN

Cobalt sulfide thin films were synthesized from acidic chemical baths by varying the deposition time.

The powder X-ray diffraction studies indicated that there are hexagonal CoS, face-centered cubic Co3S4, and cubic Co9S8 phases of cobalt sulfide.

The crystallite size of the hexagonal CoS phase decreased from 52.8 nm to 22.5 nm and that of the cubic Co9S8 phase increased from 11 nm to 60 nm as the deposition time increased from 2 hrs to 3.5 hrs.

The scanning electron microscopic images revealed crack and pinhole free thin films with uniform and smooth background and few large polygonal grains on the surface.

The band gap of the cobalt sulfide thin films decreased from 1.75 eV to 1.3 eV as the deposition time increased from 2 hrs to 3.5 hrs.

The photoluminescence (PL) spectra of the films confirmed the emission of ultraviolet, violet, and blue lights.

The intense PL emission of violet light at 384 nm had red shifted with increasing deposition time that could be resulted from the increase in the average crystallite size.

The FTIR spectra of the films indicated the presence of OH, C-O-H, C-O, double sulfide, and Co-S groups.

As the deposition time increased, the electrical resistivity of the cobalt sulfide thin films decreased due to the increase in both the crystallite size and the films’ thickness.

نمط استشهاد جمعية علماء النفس الأمريكية (APA)

Abza, Tizazu& Dadi, Dereje Gelanu& Hone, Fekadu Gashaw& Meharu, Tesfaye Chebelew& Tekle, Gebremeskel& Abebe, Eyobe Belew…[et al.]. 2020. Characterization of Cobalt Sulfide Thin Films Synthesized from Acidic Chemical Baths. Advances in Materials Science and Engineering،Vol. 2020, no. 2020, pp.1-9.
https://search.emarefa.net/detail/BIM-1128048

نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)

Abza, Tizazu…[et al.]. Characterization of Cobalt Sulfide Thin Films Synthesized from Acidic Chemical Baths. Advances in Materials Science and Engineering No. 2020 (2020), pp.1-9.
https://search.emarefa.net/detail/BIM-1128048

نمط استشهاد الجمعية الطبية الأمريكية (AMA)

Abza, Tizazu& Dadi, Dereje Gelanu& Hone, Fekadu Gashaw& Meharu, Tesfaye Chebelew& Tekle, Gebremeskel& Abebe, Eyobe Belew…[et al.]. Characterization of Cobalt Sulfide Thin Films Synthesized from Acidic Chemical Baths. Advances in Materials Science and Engineering. 2020. Vol. 2020, no. 2020, pp.1-9.
https://search.emarefa.net/detail/BIM-1128048

نوع البيانات

مقالات

لغة النص

الإنجليزية

الملاحظات

Includes bibliographical references

رقم السجل

BIM-1128048