Enhance of TiO2 dopants incorporated reduced graphene oxide via RF magnetron sputtering for efficient dye-sensitised solar cells
Document Type
Article
Publication Date
1-1-2018
Abstract
In particular, the dye-sensitised solar cells (DSSCs) have a high potential in the rational energy conversion efficiency to secure our sustainable energy source. In the present study, advanced radio frequency (RF) magnetron sputtering technique was applied to incorporate titanium dioxide (TiO2) dopants into reduced graphene oxide (rGO) nanosheet for improving the power conversion efficiency (PCE) of DSSCs device. An optimum TiO2 content incorporated onto rGO nanosheet plays an important role in improving the PCE of DSSCs by minimising the recombination losses of photo-induced charge carriers. Based on the results obtained, 40-s sputtering duration for incorporating TiO2 dopants onto rGO nanosheet exhibits a maximum PCE of 8.78% than that of pure rGO film (0.68%). In fact, the presence of optimum content of TiO2 dopants within rGO nanosheet could act as mediators for efficient separation photo-induced charge carriers. However, the excessive of sputtering duration (e.g. 60 s) of TiO2 dopants onto rGO nanosheet results higher charge recombination and lowers the PCE of DSSCs (5.39%).
Keywords
Dye-sensitised solar cell, Reduced graphene oxide, RF magnetron sputtering, Titanium dioxide
Divisions
nanotechnology
Funders
University Malaya Prototype Grant (No. RU005G-2016),Transdisciplinary Research Grant Scheme, TRGS (No. TR002A-2014B),University Malaya Research Grant (No. RP045B-17AET),Global Collaborative Programme-SATU Joint Research Scheme from the University of Malaya (No. ST007-2017)
Publication Title
Rare Metals
Volume
37
Issue
11
Publisher
Springer Verlag