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Dr Roshan Nilantha Kumara Narayana Thotagamuge Assistant Professor, Centre for Advanced Material and Energy Sciences

About Me Publications

Dr Roshan Nilantha Kumara Narayana Thotagamuge

Assistant Professor, Centre for Advanced Material and Energy Sciences roshan.kumara@ubd.edu.bn


ABOUT ME

Assistant Prof. N T Roshan N Kumara specializes in solar cells, semiconductor materials nano-surface and their applications. He obtained BSc (Physics) degree from University of Ruhuna in 2005. In 2010, he completed his MPhil on Nanotechnology at Wayamba University of Sri Lanka. He obtained the PhD in Applied physics from Universiti Brunei Darussalam in 2015.

He has received professional awards during his academic and research career. These include the presidential research award from the president of Sri Lanka awarded for quality researches (2006), and Graduate Research Scholarship (GSR) from the Universiti Brunei Darussalam (2012) for his doctoral studies. His research interests are in the areas of Dye Sensitized Solar Cells, thin film gas sensors, semiconductor materials nano-surface and their applications.

Apart from research, he has served the duties as physics lecturer. He was attached to the department of physics, Open university of Sri Lanka and university of Ruhuna Sri Lanka.

RESEARCH INTERESTS

Thin film sensors, Solar cells, Natural Dyes, DSSC

14

Scopus Publications

299

Google Scholar Citations

8

Google Scholar h-index

7

Google Scholar i10-index


FUTURE PROJECTS

Metal oxide nanoparticle thin film gas sensor to detect pollutant gases

Prevention of unforeseen and sudden accidents within our immediate environment as a result of gaseous pollutants and /or gas cylinder leakage make it necessary for researchers and industrialist across the world to provide effective means for present and future prevention through fabrication of gas sensors. Semiconductor metal oxide gas sensors have been proven to be the most efficient gas sensors exploited so for due to a number of reasons such as simplicity in their fabrication and cost effective.

Application invited for: PhD in Energy Studies

Gas sensor modeling and simulation

Theoretical study always help to understand the more sciences. This modelling and simulation study is to explore the behavior of pristine and different doped metal oxide clusters in the presence of gas molecules. The results may help to understand the mechanism of sensitivity and reactivity improvements in the gas sensors which will be useful for the experimental works. Energy calculations, geometry optimizations, density of states (DOS), and natural bond orbital analyses are some of selected simulation works.

Application invited for: Master in Energy Studies/ Bsc.


RECENT PUBLICATIONS

Kumara, N. T. R. N., Lim, A., Lim, C. M., Petra, M. I., & Ekanayake, P. (2017). Recent progress and utilization of natural pigments in dye sensitized solar cells: A review. Renewable and Sustainable Energy Reviews, 78, 301-317.

Kumara, N.T.R.N., Chau, Y.-F. C., Huang, J.-W., Huang, H. J., Lin, C.-T., & Chiang, H.-P. (2016). Plasmonic spectrum on 1D and 2D periodic arrays of rod-shape metal nanoparticle pairs with different core patterns for biosensor and solar cell applications. Journal of Optics, 18(11), 115003.

Chou Chau, Y. F., Lim, C. M., Lee, C., Huang, H. J., Lin, C. T., Kumara, N. T. R. N., . . . Chiang, H. P. (2016). Tailoring surface plasmon resonance and dipole cavity plasmon modes of scattering cross section spectra on the single solid-gold/gold-shell nanorod. Journal of Applied Physics, 120(9). doi:10.1063/1.4962175

Kumara, N. T. R. N., Petrović, M., Peiris, D. S. U., Marie, Y. A., Vijila, C., Petra, M. I., . . . Ekanayake, P. (2015). Efficiency enhancement of Ixora floral dye sensitized solar cell by diminishing the pigments interactions. Solar Energy, 117, 36-45. doi:10.1016/j.solener.2015.04.019

Lim, A., Kumara, N. T. R. N., Tan, A. L., Mirza, A. H., Chandrakanthi, R. L. N., Petra, M. I., . . . Ekanayake, P. (2015). Potential natural sensitizers extracted from the skin of Canarium odontophyllum fruits for dye-sensitized solar cells. Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, 138, 596-602. doi:10.1016/j.saa.2014.11.102

Kumara, N. T. R. N., Kooh, M. R. R., Lim, A., Petra, M. I., Voo, N. Y., Lim, C. M., & Ekanayake, P. (2013). DFT/TDDFT and experimental studies of natural pigments extracted from black tea waste for DSSC application. International Journal of Photoenergy, 2013. doi:10.1155/2013/109843

N.T.R.N. Kumara, N. Hamdan, M. I. Petra, K. U. Tennakoon, P. Ekanayake, “Equilibrium Isotherm Studies of Adsorption of Pigments Extracted from Kuduk-kuduk (Melastomamalabathricum L.) Pulp onto TiO2 Nanoparticles” Journal of Chemistry, (2014) vol. 2014, Article ID 468975, 6 pages. DOI: 10.1155/2014/468975


TOP PUBLICATIONS

Kumara, N. T. R. N., Lim, A., Lim, C. M., Petra, M. I., & Ekanayake, P. (2017). Recent progress and utilization of natural pigments in dye sensitized solar cells: A review. Renewable and Sustainable Energy Reviews, 78, 301-317.

Samarasekara, P., Kumara, N. T. R. N., & Yapa, N. U. S. (2006). Sputtered copper oxide (CuO) thin films for gas sensor devices. Journal of Physics Condensed Matter, 18(8), 2417-2420. doi:10.1088/0953-8984/18/8/007

Samarasekara, P., Yapa, N. U. S., Kumara, N. T. R. N., & Perera, M. V. K. (2007). CO<inf>2</inf> gas sensitivity of sputtered zinc oxide thin films. Bulletin of Materials Science, 30(2), 113-116. doi:10.1007/s12034-007-0020-y

Kumara, N. T. R. N., Ekanayake, P., Lim, A., Liew, L. Y. C., Iskandar, M., Ming, L. C., & Senadeera, G. K. R. (2013). Layered co-sensitization for enhancement of conversion efficiency of natural dye sensitized solar cells. Journal of Alloys and Compounds, 581, 186-191. doi:10.1016/j.jallcom.2013.07.039

Ekanayake, P., Kooh, M. R. R., Kumara, N. T. R. N., Lim, A., Petra, M. I., Yoong, V. N., & Ming, L. C. (2013). Combined experimental and DFT-TDDFT study of photo-active constituents of Canarium odontophyllum for DSSC application. Chemical Physics Letters, 585, 121-127. doi:10.1016/j.cplett.2013.08.094


GRANT DETAILS

URG
Low operating temperature thin film gas sensor
Narayana Thotagamuge Roshan Nilantha Kumara
01/12/2016 - 30/11/2018


Scopus Publications

Total Publications: 14



1. Recent progress and utilization of natural pigments in dye sensitized solar cells: A review, Renewable and Sustainable Energy Reviews

2. Plasmonic spectrum on 1D and 2D periodic arrays of rod-shape metal nanoparticle pairs with different core patterns for biosensor and solar cell applications, Journal of Optics (United Kingdom)

3. Tailoring surface plasmon resonance and dipole cavity plasmon modes of scattering cross section spectra on the single solid-gold/gold-shell nanorod, Journal of Applied Physics

4. Efficiency enhancement of Ixora floral dye sensitized solar cell by diminishing the pigments interactions, Solar Energy

5. Potential natural sensitizers extracted from the skin of Canarium odontophyllum fruits for dye-sensitized solar cells, Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy

6. Equilibrium isotherm studies of adsorption of pigments extracted from Kuduk-kuduk (Melastoma malabathricum L.) pulp onto TiO2 nanoparticles, Journal of Chemistry

7. Impacts of temperature on the stability of tropical plant pigments as sensitizers for dye sensitized solar cells, Journal of Biophysics

8. DFT/TDDFT and experimental studies of natural pigments extracted from black tea waste for DSSC application, International Journal of Photoenergy

9. Layered co-sensitization for enhancement of conversion efficiency of natural dye sensitized solar cells, Journal of Alloys and Compounds

10. Combined experimental and DFT-TDDFT study of photo-active constituents of Canarium odontophyllum for DSSC application, Chemical Physics Letters

11. Study of the enhancement of cell performance of dye sensitized solar cells sensitized with nephelium lappaceum (F: Sapindaceae), Journal of Solar Energy Engineering, Transactions of the ASME

12. Kinetics of photocurrent generation and an efficient charge separation of a dye-sensitized n-Cu2O/p-CuSCN junction photoelectrode in a solid-state photovoltaic cell, Semiconductor Science and Technology

13. CO2 gas sensitivity of sputtered zinc oxide thin films, Bulletin of Materials Science

14. Sputtered copper oxide (CuO) thin films for gas sensor devices, Journal of Physics Condensed Matter