Nanostructured Tio2 Films as Light Harvesting Materials
| المصدر: | مجلة الأستاذ |
|---|---|
| الناشر: | جامعة طرابلس - نقابة أعضاء هيئة التدريس |
| المؤلف الرئيسي: | Hassine, Nabile (Author) |
| المجلد/العدد: | ع9 |
| محكمة: | نعم |
| الدولة: |
ليبيا |
| التاريخ الميلادي: |
2015
|
| الشهر: | خريف |
| الصفحات: | 4 - 10 |
| رقم MD: | 770657 |
| نوع المحتوى: | بحوث ومقالات |
| اللغة: | الإنجليزية |
| قواعد المعلومات: | EduSearch |
| مواضيع: | |
| رابط المحتوى: |
عدد مرات التحميل
3
| المستخلص: |
Dye - sensitized solar cells (DSSCs) have been intensively investigated during the past two decades as a promising alternative to conventional silicon - based solar cells. This is due to the fact that DSSCs have very low fabrication cost without expensive and energy intensive high temperature and high vacuum processes. The present work involved initially preparing a nanocrystalline titanium dioxide, TiO2, colloidal solution which is then used for the production of the nanoporous TiO2 films. The nan crystalline TiO2 electrode, which is a key component of rigid DSSCs, was prepared by the doctor-blade technique on conductive fluorine - doped tin oxide (FTO) glass substrates using the above mentioned TiO, solution containing an organic binder, followed by an annealing step at 450 °C in air. The main focus of the present study was to investigate the influence of TiO2 film thickness on the performance of the as- assembled solar cell. It was observed that the cell efficiency rose to a relatively high value of about 13% as the number of deposited TiO2 layers increased from one to five layers. However, going beyond this number of layers led to peeling of the TiO2 films due to poor adherence between individual particles and particle - substrate. |
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