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Lee, W.,Baek, S.,Mane, R.S.,Todkar, V.V.,Egorova, O.,Chae, W.S.,Lee, S.H.,Han, S.H. Elsevier 2009 CURRENT APPLIED PHYSICS Vol.9 No.1
The indium sulfide (In<SUB>2</SUB>S<SUB>3</SUB>) nanorods thin films were prepared by wet chemical process. The films were sintered in air atmosphere from 523 to 673K for 10min. The chemically deposited In<SUB>2</SUB>S<SUB>3</SUB> nanorods thin films were characterized by structural and optical techniques. Effect of annealing revealed change in phase from an amorphous In<SUB>2</SUB>S<SUB>3</SUB> to nanocrystalline In<SUB>2</SUB>O<SUB>3</SUB> (without changing nanorod morphology) was reflected from enhanced absorbance due to the crystallinity improvement, and then decreased due to the phase change.
Liquid phase deposition of amorphous In2S3 nanorods: Effect of annealing on phase change
이원주,백수진,R.S. Mane,V.V. Todkar,Olga Egorova,채원석,이수형,한성환 한국물리학회 2009 Current Applied Physics Vol.9 No.11
The indium sulfide (In2S3) nanorods thin films were prepared by wet chemical process. The films were sintered in air atmosphere from 523 to 673 K for 10 min. The chemically deposited In2S3 nanorods thin films were characterized by structural and optical techniques. Effect of annealing revealed change in phase from an amorphous In2S3 to nanocrystalline In2O3 (without changing nanorod morphology) was reflected from enhanced absorbance due to the crystallinity improvement, and then decreased due to the phase change.
Mane, R.S.,Chang, J.,Ham, D.,Pawar, B.N.,Ganesh, T.,Cho, B.W.,Lee, J.K.,Han, S.H. Elsevier 2009 Current Applied Physics Vol.9 No.1
The present article demonstrates the use of low-cost electrochemically synthesized hydrophilic and nanocrystalline tin oxide film electrodes at room temperature in dye-sensitized solar cells and electrochemical supercapacitors. A mixed phase of tin instead of single phase composed of uniformly distributed irregular spherical grains in a nanometer regime scale was obtained. Tin oxide film electrode showed efficient photoperformance when subjected to dye-sensitized solar cells. The interfacial and specific capacitances of 118.4μF/cm<SUP>2</SUP> and 43.07F/g, respectively, in 0.1M NaOH electrolyte were confirmed from cyclic-voltammetry measurement.
Electrochromism in indium-tin-oxide films for laser-writing application
Mane, R.S.,Cai, G.,Hoeil, C.,Lokhande, C.D.,Han, S.-H. North-Holland 2009 Physica E, Low-dimensional systems & nanostructure Vol.41 No.7
We report for the first time laser-writing application on an electrochemically NH<SUB>4</SUB><SUP>+</SUP> ion intercalated indium-tin oxide (ITO). NH<SUB>4</SUB><SUP>+</SUP> ion intercalation results into a color change from transparent to brown with a significant enhancement of the surface roughness. Both bare and intercalated ITO's are explored for their structural, surface morphological, and wettability studies. Upon NH<SUB>4</SUB><SUP>+</SUP> intercalation, both an optical absorbance and the surface wettability of ITO changes substantially. A micrometer-scale laser-writing application on intercalated ITO film is achieved after exposing an Ar-ion laser that is non-erasable even after a period of six months. This idea can be used for maintaining long-term safe secrete data.
Upright-standing ZnO nano-sheets growth using wet chemistry
Min, S.K.,Mane, R.S.,Joo, O.S.,Ganesh, T.,Cho, B.W.,Han, S.H. Elsevier 2009 CURRENT APPLIED PHYSICS Vol.9 No.2
Room temperature solution processing is used for cross-linked upright-standing ZnO nano-sheets growth of ∼2-5μm in length and ∼100-150nm in width. These nano-sheets are characterized for structural and surface morphological analyses. Energy dispersive X-ray spectrum is preferred to chemical analysis. Confirmation of well defined, cross-linked and distinct ZnO nano-sheets of quoted dimensions is carried out using a scanning electron microscopy. Porous nature of nano-sheets with fine edge boundaries is noted from low resolution transmission electron microscopy.
Shaikh, S.F.,Mane, R.S.,Joo, O.S. Pergamon Press 2014 ELECTROCHIMICA ACTA Vol.147 No.-
Table-top (market quality) sugar-mediated green synthesis of tin oxide (SnO<SUB>2</SUB>) spherical nanocrystallites (NCs) of 40-60nm is reported, passivated with 2, 4 and 6 layers (L) of zinc sulphide (ZnS) and envisaged in dye sensitized solar cells (DSSCs). All photoanodes i.e. without and ZnS-passivated SnO<SUB>2</SUB> (SnO<SUB>2</SUB>-ZnS NCs) are characterized for their structure, morphology, optoelectrochemical properties. SnO<SUB>2</SUB>-ZnS NC-electrodes show appreciable DSSCs performance due to an enhanced dye loading capability, light scattering ability, and suppressed recombination rate. The optimized SnO<SUB>2</SUB>-(4L) ZnS NC-photoanode demonstrates 200% enhancement in the power conversion efficiency compared to SnO<SUB>2</SUB> NC-based photoanode. This is due to prolonged transient photovoltage decay and higher charge recombination resistance with a minimized recombination rate of photoelectrons. Mott-Schottky measurements confirm a negative shift in the conduction band position of SnO<SUB>2</SUB>-(4L) ZnS NCs photoanode (0.41V) compared to SnO<SUB>2</SUB> NC-photoanode.
Multiple band gap energy layered electrode for photoelectrochemical cells
Kale, S.S.,Mane, R.S.,Ganesh, T.,Pawar, B.N.,Han, S.H. Elsevier 2009 CURRENT APPLIED PHYSICS Vol.9 No.2
Using wet chemistry, electrode of multiple band gap energy starting from wide titanium dioxide (TiO<SUB>2</SUB>) to narrow range cadmium selenide (CdSe) is synthesized. Complete utilization of solar spectrum by initializing the film of wide band gap energy (absorbs high energy photons) permitting to narrow band gap films (absorbs low energy photons), is explored in the manuscript. X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-Vis spectrophotometer techniques were used for the structural, surface morphological and optical studies. The role of every layer of descending band gap energy on the performance of photoelectrochemical cells is demonstrated. The three layered electrode exhibits a good absorbance followed by photoresponse as compared to the bilayers.
Ambade, S.,Ambade, R.,Eom, S.,Baek, M. J.,Bagde, S.,Mane, R.,Lee, S. H. Royal Society of Chemistry 2016 Nanoscale Vol.8 No.9
<P>In an unprecedented attempt, we present an interesting approach of coupling solution processed ZnO planar nanorods (NRs) by an organic small molecule (SM) with a strong electron withdrawing cyano moiety and the carboxylic group as binding sites by a facile co-functionalization approach. Direct functionalization by SMs (SM-ZnO NRs) leads to higher aggregation owing to the weaker solubility of SMs in solutions of ZnO NRs dispersed in chlorobenzene (CB). A prior addition of organic 2-(2-methoxyethoxy) acetic acid (MEA) over ZnO NRs not only inhibits aggregation of SMs over ZnO NRs, but also provides enough sites for the SM to strongly couple with the ZnO NRs to yield transparent SM-MEA-ZnO NRs hybrids that exhibited excellent capability as electron transporting layers (ETLs) in inverted organic solar cells (iOSCs) of P3HT:PC60BM bulk-heterojunction (BHJ) photoactive layers. A strongly coupled SM-MEA-ZnO NR hybrid reduces the series resistance by enhancing the interfacial area and tunes the energy level alignment at the interface between the (indium-doped tin oxide, ITO) cathode and BHJ photoactive layers. A significant enhancement in power conversion efficiency (PCE) was achieved for iOSCs comprising ETLs of SM-MEA-ZnO NRs (3.64%) advancing from 0.9% for pristine ZnO NRs, while the iOSCs of aggregated SM-ZnO NRs ETL exhibited a much lower PCE of 2.6%, thus demonstrating the potential of the co-functionalization approach. The superiority of the co-functionalized SM-MEA-ZnO NRs ETL is also evident from the highest PCE of 7.38% obtained for the iOSCs comprising BHJ of PTB7-Th: PC60BM compared with extremely poor 0.05% for non-functionalized ZnO NRs.</P>
Sharma, R.,Sagade, A.A.,Gosavi, S.R.,Gudage, Y.G.,Ghosh, A.,Kulariya, P.,Sulaniya, I.,Mane, R.S.,Han, S.H. North-Holland 2009 Journal of non-crystalline solids Vol.355 No.31
The copper chalcogenide (CuX, X=S, Se) thin films have been irradiated with 100MeV gold swift heavy ions (SHI) at 10<SUP>11</SUP> and 10<SUP>12</SUP> ions/cm<SUP>2</SUP> fluences. The irradiation effects were probed by characterizing physical properties such as XRD, AFM, optical band gap and electrical resistivity of copper chalcogenide thin films. The increase in irradiation fluence increases the particle size, electrical conductivity and PL intensity of the materials, and the optical band edges were red shifted. The results are explained by quantifying electronic energy loss of ions in both the materials.
Lakshman S. Gadekar,Santosh S. Katkar,Shivshankar R. Mane,Balasaheb R. Arbad,Machhindra K. Lande 대한화학회 2009 Bulletin of the Korean Chemical Society Vol.30 No.11
A facile and efficient synthetic route has been developed for the polyhydroquinoline via four component reactions of aldehydes, dimedone, ethyl acetoacetate and ammonium acetate in the presence of catalytic amount of scolecite in ethanol at 70 °C through Hantzsch reaction. This method gives remarkable advantages such as simple work-up procedure, environmentally friendly, inexpensive, non-toxic and recyclable catalyst, shorter reaction time along with excellent yields.