Browsing Physics by Title

Now showing items 1-20 of 171

Activated carbon /ag2moo4-sns heterostructured photocapacitor for solar energy harvest and storage

Thirunavukarasu, K.; Velauthapillai, D.; Shivatharsiny, Y.; Ravirajan, P.; Yuvapragasam, A.; Senthilnanthanan, M. (University of Jaffna, 2020)

Solar cells and batteries are so far recognized as independent technologies of solar energy harvesting and storage systems which only utilized a fraction of solar energy. It is highly desirable to improve the efficient ...
Admium sulphide (cds) quantum dots (qd) on vertically aligned zinc oxide (zno) nanorods for photovoltaic application

Thanihaichelvan, M.; Ravirajan, P. (University of Jaffna, 2014)

Nanostructured metal oxides are promising candidate for cost efficient solar cells. A key advantage of using metal oxides as electron acceptors is the capability to produce rigid, nanocrystalline structures that present a ...
Air processed Cs2AgBiBr6 lead‑free double perovskite high‑mobility thin‑flm feld‑efect transistors

Abiram, G.; HeidariGourji, F.; Pitchaiya, S.; Ravirajan, P.; Murugathas, T.; Velauthapillai, D. (Scientifc Reports, 2022)

This study focuses on the fabrication and characterization of Cs2AgBiBr6 double perovskite thin flm for feld-efect transistor (FET) applications. The Cs2AgBiBr6 thin flms were fabricated using a solution process technique ...
Air processed Cs2AgBiBr6 lead‑free double perovskite high‑mobility thin‑flm feld‑efect transistors

Abiram, G.; HeidariGourji, F.; Pitchaiya, S.; Ravirajan, P.; Murugathas, T.; Velauthapillai, D. (Scientifc Reports, 2022)

This study focuses on the fabrication and characterization of Cs2AgBiBr6 double perovskite thin flm for feld-efect transistor (FET) applications. The Cs2AgBiBr6 thin flms were fabricated using a solution process technique ...
Autodissociation of doubly charged water molecules

Scully, S.W.J; Wyer, J.A; Senthil, V; Shah, M.B; Montenegro, E.C (The American Physical Society, 2006)

The electron impact dissociative double-ionization cross sections for H2 O between 45 and 1500 eV have been measured using time of flight mass spectrometry. The energy dependence of the H+ +O H+ and H+ + O+ ion pair ...
Bimetallic AC/Ag2CrO4/SnS heterostructure photoanode for energy conversion and storage: A self-powered Photocapacitor

Kajana, T.; Pirashanthan, A.; Yuvapragasam, A.; Velauthapillai, D.; Ravirajan, P.; Senthilnanthanan, M. (Elsevier, 2022)

The worldwide increase in generation of solar based electricity prompts the essentiality of research efforts on the development of energy storage systems. In this regard, self-powered photocapacitors are of keen interest ...
Binary counter ion effects and dielectric behavior of iodide ion conducting gel polymer electrolytes for high-efficiency quasi-solid-state solar cells

Bandara, T.M.W.J.; Senavirathna, S.L.N.; Wickramasinghe, H.M.N.; Vignarooban, K.; Silva, L.A.D.; Dissanayake, M.A.K.L.; Albinsson, I.; Mellander, B.E. (University of Jaffna, 2020)

A series of highly efficient quasi-solid-state dye-sensitized solar cells (DSCs) is prepared by harnessing the binary cation effect and positive effects of the selected performance enhancers of gel-polymer electrolytes. ...
The Born-Green equation for liquid metals

Kumaravadivel, R; Evans, R; Greenwood, D.A (1974)

Conflicting reports have appeared in the literature concerning the usefulness of the Born-Green equation to determine effective interionic pair potentials in liquid metals from measured structure factors. To elucidate the ...
Cadmium sulfide interface layer for improving the performance of titanium dioxide/poly (3-hexylthiophene) solar cells by extending the spectral response

Thanihaichelvan, M.; Sockiah, K.; Balashangar, K.; Ravirajan, P. (Journal of Materials Science: Materials in Electronics, 2015-06)

This work focused on studying the effect of cadmium sulfide (CdS) interfacial layer on the performance of titanium dioxide (TiO2)/poly (3-hexylthiophene) (P3HT) solar cells and finding out its effect on charge recombination ...
Cadmium sulfide interface layer for improving the performance of titanium dioxide/poly (3-hexylthiophene) solar cells by extending the spectral response

Thanihaichelvan, M.; Sockiah, K.; Balashangar, K.; Ravirajan, P. (University of Jaffna, 2015)

This work focused on studying the effect of cadmium sulfide (CdS) interfacial layer on the performance of titanium dioxide (TiO2)/poly (3-hexylthiophene) (P3HT) solar cells and finding out its effect on charge recombinat ...
Calculations of the surface energy of simple liquid metals

Kumaravadivel, R; Evans, R (1975)

Calculations of the surface energy of eleven liquid metals are presented. These are based on the recently proposed pseudo-atom theory of Evans (see abstr. A72625 of 1974). The results are in good agreement with experiment ...
Changes of resistance, work function and Fermi level during the hydriding of Zr and Sc at 295K

Kandasamy, K; Surplice, N.A (1985)

The turning points on the curve of resistance versus atomic ratio ( gamma =H/Me) were correlated with the phase boundaries of the H/Zr and H/Sc systems at 295K. The changes of work function with r showed that, at low value ...
Characterization and Sintering Properties of Hydroxyapatite Bioceramics Synthesized from Clamshell Biowaste

Chui Kim, N.; Sara Lee, K.; Chin Hong, T.; Ramesh, S.; Chen Hunt, T.; Chuah, Y.; Chou Yong, T.; Sutharsini, U. (IIUM Engineering Journal, Vol. 23, No. 2, 2022, 2022)

Hydroxyapatite (HA) is a type of calcium phosphate-based bioactive ceramic that resembles the mineral phase of bone and teeth with great potential for bone substitution and biomedical implants. Biogenic-derived HA ...
Cobalt disulfide embedded tio2 nanocomposites for hydrogen production under uv irradiation

Shanmugaratnam, S.; Christy, A.A.; Velauthapillai, D.; Ravirajan, P.; Rasalingam, S. (University of Jaffna, 2019)

Hydrogen gas is greener and reliable energy source, which can contribute to fill the gap between the energy demand and energy supply. Several photocatalyst materials, such as TiO2, ZnO, CdS, WS2, mixed oxides, perovskites, ...
Controlling recombination kinetics of hybrid nanocrystalline titanium dioxide/polymer solar cells by inserting an alumina layer at the interface

Loheeswaran, S; Balashangar, K.; Jevirshan, J; Ravirajan, P. (Journal of Nanoelectronics and Optoelectronics, 2013-12)

This work focuses on improving the performance of hybrid titanium dioxide (TiO2/polymer solar cells by modifying the metal oxide-polymer interface using an alumina (Al2O3 layer. Optical absorption measurement shows that ...
Controlling recombination kinetics of hybrid nanocrystalline titanium dioxide/polymer solar cells by inserting an alumina layer at the interface

Loheeswaran, S.; Balashangar, K.; Jevirshan, J.; Ravirajan, P. (University of Jaffna, 2013)
Controlling recombination kinetics of hybrid poly-3- hexylthiophene (P3HT)/titanium dioxide solar cells by self assembled monolayer

Loheeswaran, S.; Thanihaichelvan, M.; Ravirajan, P.; Nelson, J. (University of Jaffna, 2016)

Self-assembled monolayers (SAMs) of benzoic acid based molecules are used to modify the metal oxide– polymer interface in a hybrid poly-3-hexylthiophene (P3HT)/TiO2 photovoltaic device structure. The effect of SAMs on ...
Controlling recombination kinetics of hybrid poly-3-hexylthiophene (P3HT)/titanium dioxide solar cells by self-assembled monolayers

Loheeswaran, S; Thanihaichelvan, M; Ravirajan, P.; Nelson, J (Journal of Materials Science: Materials in Electronics, 2017-03)

Self-assembled monolayers (SAMs) of benzoic acid based molecules are used to modify the metal oxide–polymer interface in a hybrid poly-3-hexylthiophene (P3HT)/TiO2 photovoltaic device structure. The effect of SAMs on current ...
CoS2/TiO2 Nanocomposites for Hydrogen Production under UV Irradiation

Sivagowri, S.; Velauthapillai, D.; Ravirajan, P.; Christy, A.A.; Shivatharsiny, Y. (Materials, 2019)

Transition metal chalcogenides have intensively focused on photocatalytic hydrogen production for a decade due to their stronger edge and the quantum confinement effect. This work mainly focuses on synthesis and hydrogen ...
CoS2TiO2 Nanocomposites for Hydrogen Production under UV Irradiation

Shanmugaratnam, S.; Velauthapillai, D.; Ravirajan, P.; Christy, A.A.; Shivatharsiny, Y. (University of Jaffna, 2019)

Transition metal chalcogenides have intensively focused on photocatalytic hydrogen production for a decade due to their stronger edge and the quantum confinement effect. This work mainly focuses on synthesis and hydrogen ...

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