عرض بسيط للتسجيلة

Improving the efficiency of dye sensitized solar cells by TiO2-graphene nanocomposite photoanode

المؤلفMehmood U.
المؤلفAhmed S.
المؤلفHussein I.A.
المؤلفHarrabi K.
تاريخ الإتاحة2022-04-25T10:59:49Z
تاريخ النشر2015
اسم المنشورPhotonics and Nanostructures - Fundamentals and Applications
المصدرScopus
المعرّفhttp://dx.doi.org/10.1016/j.photonics.2015.08.003
معرّف المصادر الموحدhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84942239894&doi=10.1016%2fj.photonics.2015.08.003&partnerID=40&md5=19fa7811cfe8d77f3237da159cd38778
معرّف المصادر الموحدhttp://hdl.handle.net/10576/30429
الملخصNanocomposite photoanodes were prepared by addition of graphene (GR) micro-platelets to TiO2 nanoparticulate paste. TiO2/graphene based DSSCs were fabricated using Z907 photosensitizer. Transmission electron microscope was used to confirm the presence of graphene in composite films after heating at 450 �C for 30 min. UV-visible absorption spectroscopy, photocurrent-voltage characteristics and electrochemical impedance spectroscopic measurements were conducted to characterize the DSSCs. The results show that the photo conversion efficiency is highly dependent on the concentration of graphene in the photoanode. Under an optimal conditions, solar cell based on graphene/TiO2 shows power conversion efficiency (PCE) of 4.03%, which is about 26% greater than the cell based on pristine TiO2 electrode (3.20%). A density functional theory was used to compute the band gap of TiO2 and graphene-TiO2 nano clusters.
راعي المشروعThe authors would like to acknowledge the support provided by King Abdulaziz City for Science and Technology (KACST) through the Science & Technology Unit at King Fahd University of Petroleum & Minerals (KFUPM) for funding this work through project no. 11-ENE1635-04 as part of the National Science, Technology and Innovation Plan. KFUPM is also acknowledged for supporting this research. The authors would like to acknowledge the Center of Research Excellence for Renewable Energy at KFUPM.
اللغةen
الناشرElsevier B.V.
الموضوعAbsorption spectroscopy
Composite films
Conversion efficiency
Density functional theory
Dye-sensitized solar cells
Efficiency
Electrochemical impedance spectroscopy
Energy gap
Nanoclusters
Nanocomposites
Photosensitizers
Solar cells
Titanium dioxide
Transmission electron microscopy
Electrochemical impedance
Graphene nanocomposites
Photo-anodes
Power conversion efficiencies
Spectroscopic measurements
Titania
UV-visible absorption spectroscopy
Voltage characteristics
Graphene
العنوانImproving the efficiency of dye sensitized solar cells by TiO2-graphene nanocomposite photoanode
النوعArticle
الصفحات34-42
رقم المجلد16
dc.accessType Abstract Only


الملفات في هذه التسجيلة

الملفاتالحجمالصيغةالعرض

لا توجد ملفات لها صلة بهذه التسجيلة.

هذه التسجيلة تظهر في المجموعات التالية

عرض بسيط للتسجيلة