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http://hdl.handle.net/20.500.12358/21485
TitleDye Sensitized Solar Cells Based on Natural Dyes Extracted from Plant Roots
Title in Arabicالخلايا الشمسية الصبغية المعتمدة على الصبغات المستخلصة من جذور النباتات
Abstract

The objectives of this thesis are to prepare dye sensitized solar cells (DSSCs) using titanium dioxide (TiO2) as a semiconducting layer based on six natural dyes extracted from plant roots which are purple carrot, carrot, beet, curcuma, kale and radish as sensitizers. Among the previous dyes, purple carrot showed the best efficiency. The performance of DSSCs sensitized by purple carrot is improved through: adjustment of the solution extraction temperature, studying the effect of pH on the extract solution, and finally the influence of pre and post-treatments of the fluorinated tin oxide (FTO) glass substrate and the TiO2 film using hydrochloric (HCl), phosphoric (H3PO4), and nitric (HNO3) acids. The results showed that an extracting temperature of 50°C could be used as an optimal value. The treatment of the dye solutions with acetic acid resulted in better performance in comparison with the hydrochloric acid treatment. The pre-treatment of the FTO with H3PO4 and the post-treatment of TiO2 with HNO3 resulted in improved efficiencies of 130% and 250% respectively for the DSSCs sensitized by purple carrot.

Authors
Radwan, Islam Mahmoud
Supervisors
Tayeh, Sofyan A.
El-Agez, Taher M.
Typeرسالة ماجستير
Date2015
LanguageEnglish
Publisherالجامعة الإسلامية - غزة
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  • PhD and MSc Theses- Faculty of Science [445]
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The institutional repository of the Islamic University of Gaza was established as part of the ROMOR project that has been co-funded with support from the European Commission under the ERASMUS + European programme. This publication reflects the views only of the author, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

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The institutional repository of the Islamic University of Gaza was established as part of the ROMOR project that has been co-funded with support from the European Commission under the ERASMUS + European programme. This publication reflects the views only of the author, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

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