Raghunandan Seelaboyina

Development of macroporous silicone rubber composites by internal emulsion templating for acoustic applications

Anil Kumar, Raghunandan Seelaboyina, Subhodeep Jana, Tapas Laha et autres

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AllSolid-State Coaxial Supercapacitor with UltrahighScan Rate Operability of 250 000 mV/s by Thermal Engineeringof the Electrode–Electrolyte Interface

MihirKumar Jha, Ranadeb Ball, Raghunandan Seelaboyina, Chandramouli Subramaniam

Solid-state supercapacitors have never been able to compete with their liquid electrolyte counterparts, forming a major impediment for their utilization in portable and wearable electronics. Attempts to improve the rate capability of solid-state supercapacitors have predominantly focused on the morphology or porosity …

All Solid-State Coaxial Supercapacitor with Ultrahigh Scan Rate Operability of 250 000 mV/s by Thermal Engineering of the Electrode–Electrolyte Interface

Mihir Kumar Jha, Ranadeb Ball, Raghunandan Seelaboyina, Chandramouli Subramaniam

Solid-state supercapacitors have never been able to compete with their liquid electrolyte counterparts, forming a major impediment for their utilization in portable and wearable electronics. Attempts to improve the rate capability of solid-state supercapacitors have predominantly focused on the morphology or porosity …

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A detailed study on the dielectric properties of CCTO@SiO2 core-shell nanoparticles: Role of SiO2-NH2 shell over CCTO core surface

Debasrita Bharatiya, K. Santhosh Kumar, Raghunandan Seelaboyina, Pradip Paik

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Development of Macroporous Silicone Rubber for Acoustic Applications

Anil Kumar, Asfak Ali Mollah, Anup Kumar Keshri, Manoj Kumar et autres

This work reports a comprehensive and scalable acoustic material preparation by a medium internal phase emulsion-templating technique from a single-part room temperature vulcanizable silicone rubber and pore generator (water and mineral oil mixture). By optimization of the mixing conditions, the pore-generator-volume and …

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Tungsten oxide nanowire synthesis from amorphous-like tungsten films

Raghunandan Seelaboyina

A synthesis technique which can lead to direct integration of tungsten oxide nanowires onto silicon chips is essential for preparing various devices. The conversion of amorphous tungsten films deposited on silicon chips by pulsed layer deposition to nanowires by annealing is an …

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CZTS synthesis in aqueous media by microwave irradiation

Venkata Alekhya Madiraju, Kshitij Taneja, Manoj Kumar, Raghunandan Seelaboyina

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Microwave Synthesis of Thin Film Absorber Layer Nanopowders of Copper-Indium-Gallium-(di) Selenide and Copper-Zinc-Tin-Sulfide

Raghunandan Seelaboyina, Manoj Kumar, Alekhya Venkata Madiraju, Kshitij Taneja et autres

Microwave irradiation is a fast, reliable and efficient technique for thermally driven chemical reactions used to produce various in-organic nano-powders. This paper reviews the microwave synthesis method for the preparation of size and composition defined nanopowders of copper-indium-gallium-(di)selenide (CIGS) and copper-zinc-tin-sulfide (CZTS) …

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Synthesis of CIS Nanoink and Its Absorber Layer without Selenization

Manoj Kumar, Raghunandan Seelaboyina, Kshitij Taneja, Alekhya Venkata Madiraju et autres

Highly crystalline CIS nanoink was synthesized using highly efficient microwave route. Thin films of CIS were fabricated using the developed ink by drop casting method. XRD pattern of CIS thin films indicates that a chalcopyrite phase with good crystallinity can be obtained …

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Synthesis of CZTS in Aqueous Media Using Microwave Irradiation

Alekhya Venkata Madiraju, Kshitij Taneja, Manoj Kumar, Anup Kumar Keshri et autres

Copper-Zinc-Tin-Sulfide (CZTS), a promising material for absorber layer application in thin film solar cells, has been synthesized in aqueous media by microwave irradiation technique. Compared to conventional synthesis methods, microwave irradiation is highly efficient, reliable, and less time consuming. The synthesized nanopowders …

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Substrate Rotation Chemical Bath Deposition of Cadmium Sulfide Buffer Layers for Thin Film Solar Cell Application

Kshitij Taneja, Alekhya Venkata Madiraju, Manoj Kumar, Raghunandan Seelaboyina et autres

A method for deposition of cadmium sulfide (CdS) buffer layer thin films on fluorine-doped tin oxide (FTO) glass, by chemical bath deposition (CBD), has been modified. For achieving relatively uniform and pin-hole-free CdS films, substrate rotation, concentration of CdS salts, and deposition …

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Microwave synthesis of copper indium gallium (di)selenide nanopowders for thin film solar applications

Raghunandan Seelaboyina, Manoj Kumar, Alekhya Venkata Madiraju, Kshitij Taneja et autres

This work reports on the synthesis of nanopowder and nanoink of Copper-Indium-Gallium-(di)Selenide (CIGS) (CuIn0.7Ga0.3Se2) of 20–80 nm with a band gap of 1.1 eV by a facile microwave technique. For CIGS synthesis, precursor mixtures consisting of metal acetylacetonates and selenium powder in …

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