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Effect of a deposition container on the nanostructural growth and DSSC application of rutile TiO2
Tehare, Kailas K.,Zate, Manohar K.,Bhande, Sambhaji S.,Patil, Supriya A.,Gaikwad, Sanjay L.,Yoon, Seong Joon,Mane, Rajaram S.,Lee, Soo-Hyoung,Han, Sung-Hwan The Royal Society of Chemistry 2014 Journal of Materials Chemistry A Vol.2 No.2
DSSCs synergic effect in thin metal oxide layer-functionalized SnO<sub>2</sub> photoanodes
Bhande, S.S.,Shinde, D.V.,Tehare, K.K.,Patil, S.A.,Mane, R.S.,Naushad, Mu.,Alothman, Z.,Hui, K.N.,Han, S.H. Elsevier Sequoia 2014 Journal of photochemistry and photobiology Chemist Vol.295 No.-
DSSCs synergic effect, for reducing charge recombination and energizing charge transfer, in SnO<SUB>2</SUB> photoanodes functionalized with thin layers of several metal oxides including ZrO<SUB>2</SUB>, MgO, CaCO<SUB>3</SUB> and ZnO etc., for boosting overall dye-sensitized solar cells (DSSCs) performance is investigated. The SnO<SUB>2</SUB> photoanodes composed with upright-standing nanosheets were initially fabricated using a simple and cost-effective wet chemical method. Both pristine and functionalized SnO<SUB>2</SUB> photoanodes were explored in DSSCs application in addition to other photoelectrochemical properties where, functionalized photoanodes exhibited remarkably improved light-to-electrical power conversion efficiencies compared to that of pristine one. To corroborate synergic effect and for probing the charge transport properties including charge transfer resistance and electron life time in thin metal oxide functionalized SnO<SUB>2</SUB> photoanodes, electrochemical impedance spectroscopy measurement was undertaken.
A simple, room temperature, solid-state synthesis route for metal oxide nanostructures
Patil, Supriya A.,Shinde, Dipak V.,Ahn, Do Young,Patil, Dilip V.,Tehare, Kailas K.,Jadhav, Vijaykumar V.,Lee, Joong K.,Mane, Rajaram S.,Shrestha, Nabeen K.,Han, Sung-Hwan The Royal Society of Chemistry 2014 Journal of Materials Chemistry A Vol.2 No.33
<P>In this work, we demonstrate an extremely simple but highly effective strategy for the synthesis of various functional metal oxides (MOs) such as ZnO, In2O3, Bi2O3, and SnO2nanoparticles with various distinct shapes at room temperature<I>via</I>a solid-state reaction method. The method involves only mixing and stirring of the corresponding metal salt and NaOH together in the solid phase, which yields highly crystalline metal oxides within 5-10 min of reaction time. The obtained paste can be directly doctor-bladed onto a variety of substrates for photoelectrochemical applications. The crystal structure and surface composition of the MOs are obtained by X-ray diffraction patterns, energy dispersive analysis and X-ray photoelectron spectroscopy, respectively. The surface morphology is confirmed from the scanning electron microscopy surface photo-images. The surface area and pore size distribution are studied by the N2adsorption method. As a proof-of-concept demonstration for the application, ZnO nanoplate structures are envisaged in DSSCs as photoanodes, which enables us to obtain excellent photovoltaic properties with a power conversion efficiency of 5%. The proposed method does not require a sophisticated instrumental setup or harsh conditions, and the method is easily scalable. Hence, it can be applied for the cost-effective and large-scale production of MO nanoparticles with high crystallinity.</P>