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Full-Text Articles in Engineering
Carbon Nanotube/Graphene Nanocomposite As Efficient Counter Electrodes In Dye-Sensitized Solar Cells, Josef Velten, Attila J. Mozer, Dan Li, David Officer, G G. Wallace, Ray Baughman, A Zakhidov
Carbon Nanotube/Graphene Nanocomposite As Efficient Counter Electrodes In Dye-Sensitized Solar Cells, Josef Velten, Attila J. Mozer, Dan Li, David Officer, G G. Wallace, Ray Baughman, A Zakhidov
Faculty of Engineering - Papers (Archive)
We demonstrated the replacement of the Pt catalyst normally used in the counter electrode of a dye-sensitized solar cell (DSSC) by a nanocomposite of dry spun carbon multi-walled nanotube (MWNT) sheets with graphene flakes (Gr-F). The effectiveness of this counter electrode on the reduction of the triiodide in the iodide/triiodide redox (I−/I− 3 ) redox reaction was studied in parallel with the use of the dry spun carbon MWNT sheets alone and graphene flakes used independent of each other. This nanocomposite deposited onto fluorinated tin-oxide-coated glass showed improved catalytic behavior and power conversion efficiency (7.55%) beyond the use of the …
Continually Adjustable Oriented 1d Tio2 Nanostructure Arrays With Controlled Growth Of Morphology And Their Application In Dye-Sensitized Solar Cells, Ziqi Sun, Jung Ho Kim, Ting Liao, Yue Zhao, Fargol Bijarbooneh, Victor Malgras, S. X. Dou
Continually Adjustable Oriented 1d Tio2 Nanostructure Arrays With Controlled Growth Of Morphology And Their Application In Dye-Sensitized Solar Cells, Ziqi Sun, Jung Ho Kim, Ting Liao, Yue Zhao, Fargol Bijarbooneh, Victor Malgras, S. X. Dou
Faculty of Engineering - Papers (Archive)
Oriented, single-crystalline, one-dimensional (1D) TiO2 nanostructures would be most desirable for providing fascinating properties and features, such as high electron mobility or quantum confinement effects, high specific surface area, and even high mechanical strength, but achieving these structures has been limited by the availability of synthetic techniques. In this study, a concept for precisely controlling the morphology of 1D TiO2 nanostructures by tuning the hydrolysis rate of titanium precursors is proposed. Based on this innovation, oriented 1D rutile TiO2 nanostructure arrays with continually adjustable morphologies, from nanorods (NRODs) to nanoribbons (NRIBs), and then nanowires (NWs), as well …
Organic Solar Cells: Evaluation Of The Stability Of P3ht Using Time-Delayed Degradation, Chung-How Poh, Chung-Kiak Poh, Glenn Bryant, Warwick Belcher, Paul Dastoor
Organic Solar Cells: Evaluation Of The Stability Of P3ht Using Time-Delayed Degradation, Chung-How Poh, Chung-Kiak Poh, Glenn Bryant, Warwick Belcher, Paul Dastoor
Faculty of Engineering - Papers (Archive)
Despite the fact that the performance of organic solar cells is generally susceptible to degradation by moisture exposure, there has been suggestion that the photoactive layer (P3HT) is surprisingly resilient. This work attempts to confirm the stability of P3HT as an organic solar cell material by deliberately introducing water into the photoactive layer. A dramatic step drop in device performance during cell characterization is observed approximately one day after the device has been fabricated. The time-delayed step drop in output efficiency strongly suggests that moisture has little effect on the P3HT conducting polymer.
Solar-Powered Compaction Garbage Bins In Public Areas: A Preliminary Economic And Environmental Evaluation, Poppy Coleman, Long Nghiem
Solar-Powered Compaction Garbage Bins In Public Areas: A Preliminary Economic And Environmental Evaluation, Poppy Coleman, Long Nghiem
Faculty of Engineering - Papers (Archive)
An excel-based model was developed to evaluate economic and environmental benefits of the solar-powered compaction garbage bins in public areas in Australia. Input data were collected from Brisbane and Wollongong City councils, and Sydney Olympic Park. The results demonstrate that solar-powered compaction garbage bins would provide environmental benefits in all scenarios. However, results of the economic analysis of the three studied areas varied significantly. The unique situation of Sydney Olympic Park made implementation in that facility particularly appealing. A lower monthly rental cost is needed for the implementation of this novel waste management practice.
Perspectives On Solar Distillation: A Review, Luke Scott, Muttucumaru Sivakumar, Dharmappa Hagare
Perspectives On Solar Distillation: A Review, Luke Scott, Muttucumaru Sivakumar, Dharmappa Hagare
Faculty of Engineering - Papers (Archive)
An investigation has been made to develop a robust solar water purification system for remote areas without potable water or energy. Many stills have been studied, but few are practical due to low efficiency and water yield. A study of the global water supply and existing treatment methods has been made to understand the problem and to develop the design. Further analysis should lead to an apparatus that can supply potable water in remote, water or energy-deprived areas with minimal maintenance and long-term cost. Objectives for simple still design have been identified, as well as drawbacks in current designs. Employing …