Characterization of Vanadium Oxide Thin Films for Optoelectronic Application
| المصدر: | مجلة سوهاج لشباب الباحثين |
|---|---|
| الناشر: | جامعة سوهاج - كلية التربية |
| المؤلف الرئيسي: | Shokr, E. Kh. (Author) |
| مؤلفين آخرين: | Mohamed, H. A. (Co-Author) , Elkot, Sh. A. (Co-Author) , Ali, H. M. (Co-Author) |
| المجلد/العدد: | مج4, ع2 |
| محكمة: | نعم |
| الدولة: |
مصر |
| التاريخ الميلادي: |
2024
|
| الصفحات: | 1 - 14 |
| ISSN: |
2735-5535 |
| رقم MD: | 1516365 |
| نوع المحتوى: | بحوث ومقالات |
| اللغة: | الإنجليزية |
| قواعد المعلومات: | EduSearch |
| مواضيع: | |
| كلمات المؤلف المفتاحية: |
Vanadium Oxide Thin Films | Sol-Gel | Spin Coating | Optical and Electrical Properties | Solar Cells
|
| رابط المحتوى: |
| المستخلص: |
Monoclinic V₂O₃ thin films with 558 and 620 nm thick were de-posited by spin coating of viscous vanadium oxide sol-gel on glass and single crystal Silicon (Si) substrates. The crystallographic structure, surface morphology, and optical and thermoelectric properties were examined and discussed. V₂O₃ films have high surface homogeneity. The direct optical band gap energy and the localized state width of these samples were depicted to be 1.82-1.8 eV and 1.98-2.4 eV respectively, the free carrier concentration increases from 2.44 x 10²¹ to 4.42 x 10²¹ cm-³ by increasing the film thickness. The relatively high average values of absorption coefficient 1.16×10⁴ cm-¹ in the visible spectral range, besides the positive Seebeck coefficient (104.3 ?V/℃) for the film of 620 nm thick qualify this sample to be used as an absorber layer un thin-film solar cells. In this work, the solar cell with the structure ITO/CdS/V₂O₃/Mo/Glass has been accomplished. It was found that the short circuit current density (Jₛᶜ) and the solar cell efficiency (η) in the absence of optical and recombination losses are 19.4 (mA/cm²) and 14.68 %, respectively. When the optical losses are taken into consideration, Jₛᶜ and η recorded the values of 13.3 (mA/cm²) and 9.6 %, respectively. Finaly when both the optical and recombination losses were affected in the cell, the values of Jₛᶜ and η decreased and reached to 6.23 (mA/cm²) and 4.2 %, respectively. |
|---|---|
| ISSN: |
2735-5535 |
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