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Abstract
The mechanoluminescence (ML) of GdCa4O(BO3)3: Sm, Cu, Tb, Mn, Sb are studied and synthesized by a solid-state reaction process. The section clarity, crystallinity and configuration of the material are established by XRD while the FTIR spectrum of the sample confirms its practical cluster (BO3)3 and phonon frequency of the molecules in the host. B-O triangle structure defines its constructional inflexibility. Photoluminescence (PL)of GdCa4O(BO3)3 with dopants Cu0.2mol%, Mn0.2mol%, Tb0.1mol%, Sm0.2mol%, Sb0.1mol% and its transition confirms the incorporation of dopant within the host material. The ready phosphor could also be vital for stress sensing applications and accidental radiation measurement as it responds linearly to γ-ray dose and impact rate of the piston is very less sensitive for lower exposure and also it has very low fading, on storage.
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Notes on contributors
G. C. Mishra
Dr G. C. Mishra, MSc Physics, MPhil Physics, L.L.B. was born in Raigarh, C.G. He received his PhD degree in Physics in the field of Material Science from Central University Bilaspur, India. He is a Member of Luminescence Society of India, Indian Society for Particle Accelerators, Indian Physics Association and Indian Society for Technical Education. He has more than 25 years of experience of teaching and research. He received Gold Medal for MSc Physics University Merit list. Currently he is working as Professor of Physics & Asst. Dean School of Science, O P Jindal University, Raigarh. He is supervising PhD scholars and MSc students. He has published more than 50+ research papers in reputed international/national journals and conferences. He has been granted a PATENT recently. His main research interests involve Synthesis of LED phosphors, Mechanoluminescence, Lyoluminescence, Thermoluminescence, Photoluminescence characterization and uses of white phosphors in LED, Sensors and Dosimetry applications.
Upendra K. Verma
Upendra K. Verma, MPhil, Physics was born in Bhilai, CG. After completion of UG and PG degree from Kalyan College Bhilai Nagar, Chhattisgarh, he started his research work by getting admission in MPhil course at Guru Ghasi Das Vishwavidyalaya Bilaspur, Chhattisgarh. He started his career as a school teacher at DAV Public School Bilaspur and served for 13 years. On cracking Chhattisgarh Public Service Commission examination, he has been appointed as Assistant Professor in Physics at Government Dr. Indrajeet Singh College Akaltara. As on getting opportunity to teach in Higher Education he once again started his research work by getting registered in PhD course at O.P. Jindal University, Raigarh. He has been continuing his research work in the field of luminescence on the topic Synthesis and Characterization of doped and co-doped Phosphor. His main research interests involve Synthesis of LED phosphors, Mechanoluminescence, Lyoluminescence, Thermoluminescence, Photoluminescence characterization and uses of white phosphors in LED, Sensors and Dosimetry applications.
S. J. Dhoble
Prof. S. J. Dhoble obtained his MSc degree in Physics from Rani Durgavati University, Jabalpur, India in 1988. He obtained his PhD degree in 1992 in Solid State Physics from Nagpur University, Nagpur, India. Dr Dhoble is presently working as a Professor in the Department of Physics, Rashtrasant Tukadoji Maharaj Nagpur University, Nagpur, India. He has about 30 years of teaching at undergraduate and post graduate level and 29 years research experience. Consecutively in the years 2020 and 2021 Dr Dhoble stands among the ‘Top 2% Scientists in the World’ in the prestigious list published by a team of scientists in US’ Stanford University. Best Research Award-2016, for the outstanding contribution in the field of research and related extenuation activity for the University, presented by R.T.M. Nagpur University, Nagpur, India on 5th Sept 2016. He is also a recipient of India’s Top Faculty Research Award-2018 by Careers 360, for the top ten researchers in India in Physics. During his research career, he has worked on the synthesis and characterization of solid-state lighting materials and phosphors for solar cell efficiency enhancement, as well as development of radiation dosimetry phosphors and biosynthesis of nanoparticle and there applications. Dr Dhoble published 44 patents and few of them are already granted (Granted patents are 20: 01 South Korean, 01 South Africa, 13 Australian and 05 Indian). More than 757 research papers are published in Scopus indexing journals and his h-index is 39 and has 8901 citations on Scopus. Dhoble’s citation on Google Scholar is 11034 and h-index is 43 and i10-index is 324. Dr Dhoble is an Editor of ‘Luminescence: The Journal of Biological and Chemical Luminescence’, John Wiley & Sons Ltd. Publication. He is also a Fellow of the Luminescence Society of India (LSI) and Fellow of Maharashtra Academic of Sciences (MASc).