Kalainathan Sivaperuman, Anju Thomas, Ravikumar Thangavel, Logu Thirumalaisamy, Soundarrajan Palanivel, Sudhagar Pitchaimuthu, Nazmul Ahsan, Yoshitaka Okada. Binary and ternary metal oxide semiconductor thin films for effective gas sensing applications: A comprehensive review and future prospects. Progress in Materials Science. 2024. 142. 101222-101222
Karthikeyan Vijayan, Logu Thirumalaisamy, Srikarumbur Pandurangan Vijayachamundeeswari, Kalainathan Sivaperuman, Nazmul Ahsan, Yoshitaka Okada. Development of Sub-Band in Spray-Deposited Cr-Substituted Chalcopyrite Thin Films for Advancing Solar Cell Efficiency. Energy Technology. 2024
Karthikeyan Vijayan, Logu Thirumalaisamy, Srikarumbur Pandurangan Vijayachamundeeswari, Kalainathan Sivaperuman, Nazmul Ahsan, Yoshitaka Okada. A Novel Approach for Designing a Sub-Bandgap in CuGa(S,Te)2 Thin Films Assisted with Numerical Simulation of Solar Cell Devices for Photovoltaic Application. ACS Omega. 2023. 8. 25. 22414-22427
Karthikeyan Vijayan, Logu Thirumalaisamy, S. P. Vijayachamundeeswari, Kalainathan Sivaperuman, Nazmul Ahsan, Yoshitaka Okada. Hierarchically structured sub-bands in chalcopyrite thin-film solar cell devices. New Journal of Chemistry. 2023. 47. 48. 22456-22468
Bernice Mae Yu Jeco-Espaldon, Ryo Tamaki, Maxime Giteau, Hao Xu, Nazmul Ahsan, Richard R. King, Yoshitaka Okada. Electrical passivation of III-V multijunction solar cells with luminescent coupling effect. Solar Energy Materials and Solar Cells. 2023. 249. 112045-112045
Karthikeyan Vijayan, S. P. Vijayachamundeeswari, Kalainathan Sivaperuman, Nazmul Ahsan, Thirumalaisamy Logu, Yoshitaka Okada. A review on advancements, challenges, and prospective of copper and non-copper based thin-film solar cells using facile spray pyrolysis technique. Solar Energy. 2022. 234. 81-102
Naoya Miyashita, Nazmul Ahsan, Yoshitaka Okada. Characterization of 1.0 eV GaInNAsSb solar cells for multi-junction applications and the effect of annealing. Proc. 25nd European Photovoltaic Solar Energy Conference. 2015. pp.1461-1465
Prospects in thin-film intermediate band solar cells (Keynote Talk)
(2nd WORLD SUMMIT on ADVANCES in SCIENCE, ENGINEERING, and TECHNOLOGY, Indiana University-Purdue University, Indianapolis, USA (4 October 2019) 2019)
Current issues in thin-film intermediate band solar cells (Keynote Talk)
(NANOENERGY 2019 (6th International Conference on Nanotechnology, Nanomaterials & Thin Films for Energy Applications),The National Energy University, Kuala Lumpur, Malaysia ( 27 July 2019) 2019)
Study of GaInP/GaAs/GaInNAsSb 3J solar cells: Effect of hydrogen incorporation to GaInNAsSb in MOCVD/MBE hybrid growth
(Asia Pacific Society for Materials Research (APSMR) Annual Meeting (July 2019) 2019)
The influence of Al2O3 passivation of III-V on Ge multijunction solar cells to the spatial distribution of luminescent Coupling Effect
(46th IEEE Photovoltaic Specialists Conference (PVSC 46), Chicago, Illinois (June 2019) 2019)