A Comparative Study of Photoluminescence Properties of RE3+ (RE = Eu3+, Tb3+, Sm3+, or Dy3+): (MgCa)2Bi4Ti5O20 Powder Ceramics S. Sailaja, Papori Seal, E. Nirmala Devi, K. Devaki Devi, B. Sudhakar Reddy Physics of the Solid State, 2025 Abstract Synthesis of (MgCa)2Bi4Ti5O20 powder ceramics activated with (0.2 mol %) Eu3+, Tb3+, Sm3+, and Dy3+ ions was achieved via solid-state reaction method and aimed to investigate the optical properties comparatively. Notably, the emission spectra revealed distinct characteristics for each dopant. Eu3+ shows prominent emission band at 615 nm on excitation at 393 nm, while an excitation at 376 nm in Tb3+ exhibited green emission at 542 nm. Similarly, Sm3+ displayed intense reddish-orange emission at 599 nm with an excited wavelength at 405 nm, and Dy3+ emitted yellow light at 583 nm with an excitation wavelength of 426 nm. These findings emphasized significant luminescent performance of the rare earth ion-doped (MgCa)2Bi4Ti5O20 ceramic host. Among these rare earth ions, Sm3+:(MgCa)2Bi4Ti5O20 ceramic powder has shown strong luminescence intensity with its characteristics and energy band structure. Furthermore, structural and morphological analyses have been carried out by using XRD, SEM, and EDAX techniques, providing comprehensive insights into the characteristics of the ceramic powders.
Optical analysis of RE3+ (Sm or Dy): B2O3-P2O5-CaF2-ZnO–(Li2O/Na2O/K2O) glasses G. Moulika, S. Sailaja, J. Santhoshi Vijetha, S. Hajira, B. Naveen kumar Reddy, C. Nageswara Raju, B. Sudhakar Reddy Ferroelectrics, 2023 This article presents synthesis of mixed boro flouro phosphate glasses doped with trivalent samarium and dysprosium ions by melt quenching technic and the luminescent spectra of the glasses and their modifications by altering alkali oxides. Fourier transform infrared spectroscopy (FTIR) tool is used to detect various functional groups their bonding nature in host glasses .The luminescent spectrum of Sm3+ exhibits Orange-Red emission at wavelength of 599 nm due to transition from 4G5/2 →6H7/2 and Dy3+ spectrum has shown yellow emission at wavelength of 575 nm from 4F9/2 →6H13/2 by strong excitation at 403 nm and 388 nm 6H5/2 →4F7/2 transition of Samarium (Sm3+) ion and 6H15/2→4I13/2 transition of Dysprosium (Dy3+) ion respectively. In this article, by altering the three different alkali oxides (Li2O/Na2O/K2O) with the same concentration (0.5%) of Dy3+ ions and Sm3+. The change in the luminescent intensities were studied.
Optical analysis of RE3+ (RE = Nd or Er):B2O3–P2O5–CaF2–ZnO–(Li2O/Na2O/K2O) glasses Guduru Moulika, Sannapureddy Sailaja, Jillela Santhosh Vijitha, Putluru Bayapu Reddy, Kondala Shanthi Latha, Gasthi Venkata Chalapathi, Busireddy Sudhakar Reddy Luminescence, 2022 Abstract Calcium boro fluoro zinc phosphate glasses modified using alkali oxide and doped with Nd 3+ and Er 3+ ions with the chemical composition of 69.5 (B 2 O 3 ) + 10 (P 2 O 5 ) + 10 (CaF 2 ) + 5 (ZnO) + 5 (Na 2 O/Li 2 O/K 2 O) + 0.5 (Er 2 O 3 /Nd 2 O 3 ) were prepared using a conventional melt quenching technique. The results of X‐ray diffraction patterns indicated the amorphous nature of all the prepared glasses. The visible–near‐infrared red (NIR) absorption spectra of these glasses were analyzed systematically. The NIR emission spectra of Er 3+ and Nd 3+ :calcium boro fluoro zinc phosphate glasses showed prominent emission bands at 1536 nm ( 4 I 13/2 → 4 I 15/2 ) and 1069 nm ( 4 F 3/2 → 4 I 11/2 ) respectively with λ exci = 514.5 nm (Ar + laser) as the excitation source.
A cloud-based event processing technique for measuring metrological parameters of rain streams using saasand analytics International Journal of Innovative Technology and Exploring Engineering, 2019
Spectroscopic properties of Dy3+-doped alkali and mixed alkali borosilicate glasses B. Naveen Kumar Reddy, S. Sailaja, K. Thyagarajan, M. V. Ramanaiah, B. Sudhakar Reddy Ferroelectrics, 2018 Using the melt quenching technique, a new Dy3+-doped alkali and mixed alkali based borosilicate glasses were prepared and characterized for spectroscopic properties to be used to assess the potentiality for the laser gain media. The FTIR, absorption and fluorescence spectra were investigated. According to the Judd-Ofelt theory, from the absorption spectra, the oscillator strengths were computed for the observed bands of Dy3+-doped borosilicate glasses. The spectroscopic properties, J–O intensity parameters and luminescence intensity of Dy3+-ions are compared in alkali and mixed alkali based borosilicate glasses. By the comparison, low δrms (0.323), high Ω2 (11.98 × 10−20 cm2), high Ω4/Ω6 (1.164) and enhanced luminescence intensity indicates that Dy3+-ions doped mixed alkali borosilicate (especially MgNaKBSi) glasses are potentially useful candidates for laser gain media.
Emission analysis of Tb3+-and Sm3+-ion-doped (Li2O/Na2O/K2O) and (Li2O + Na2O/Li2O + K2O/K2O + Na2O)-modified borosilicate glasses B. Naveen Kumar Reddy, S. Sailaja, K. Thyagarajan, Young Dahl Jho, B. Sudhakar Reddy Luminescence, 2018 Four series of borosilicate glasses modified by alkali oxides and doped with Tb3+ and Sm3+ ions were prepared using the conventional melt quenching technique, with the chemical composition 74.5B2 O3 + 10SiO2 + 5MgO + R + 0.5(Tb2 O3 /Sm2 O3 ) [where R = 10(Li2 O /Na2 O/K2 O) for series A and C, and R = 5(Li2 O + Na2 O/Li2 O + K2 O/K2 O + Na2 O) for series B and D]. The X-ray diffraction (XRD) patterns of all the prepared glasses indicate their amorphous nature. The spectroscopic properties of the prepared glasses were studied by optical absorption analysis, photoluminescence excitation (PLE) and photoluminescence (PL) analysis. A green emission corresponding to the 5 D4 → 7 F5 (543 nm) transition of the Tb3+ ions was registered under excitation at 379 nm for series A and B glasses. The emission spectra of the Sm3+ ions with the series C and D glasses showed strong reddish-orange emission at 600 nm (4 G5/2 →6 H7/2 ) with an excitation wavelength λexci = 404 nm (6 H5/2 →4 F7/2 ). Furthermore, the change in the luminescence intensity with the addition of an alkali oxide and combinations of these alkali oxides to borosilicate glasses doped with Tb3+ and Sm3+ ions was studied to optimize the potential alkali-oxide-modified borosilicate glass.
Judd-Ofelt theory and optical analysis of RE3+ (RE= Sm & Dy): B2O3-P2O5-WO3-Li2O-(ZnO/CdO/TeO2) glasses P Aruna, S Sailaja, BS Reddy Physica B: Condensed Matter, 418437 , 2026 2026
A Comparative Study of Photoluminescence Properties of RE 3+ (RE = Eu 3+ , Tb 3+ , Sm 3+ , or Dy 3+ ): (MgCa) 2 Bi 4 Ti 5 O 20 Powder Ceramics S Sailaja, P Seal, EN Devi, KD Devi, BS Reddy Physics of the Solid State 67 (7), 556-568 , 2025 2025
Optical analysis of RE 3+ (Sm or Dy): B 2 O 3 -P 2 O 5 -CaF 2 -ZnO – (Li 2 O/Na 2 O/K 2 O) glasses G Moulika, S Sailaja, JS Vijetha, S Hajira, BN Reddy, CN Raju, BS Reddy Ferroelectrics 614 (1), 13-23 , 2023 2023
A serum interleukin-6-based analysis of patients with nasopharyngeal swab reverse-transcriptase polymerase chain reaction negative for SARS-COV-2 infection with CO-RADS 4 and 5 … KVK Reddy, P Kumar, SS Raju, S Gaddam, SL Sailaja, A Priyanka, ... Journal of Clinical and Scientific Research 12 (1), 45-50 , 2023 2023
Optical analysis of RE 3+ (RE = Nd or Er):B 2 O 3 –P 2 O 5 –CaF 2 –ZnO–(Li 2 O/Na 2 O/K 2 O) glasses G Moulika, S Sailaja, J Santhosh Vijitha, P Bayapu Reddy, ... Luminescence 37 (7), 1073-1077 , 2022 2022 Citations: 2
Study of RE ion–doped oxide glass materials for photonic applications BNK Reddy, S Sailaja, K Thyagarajan, BS Reddy Spectroscopy of Lanthanide-Doped Oxide Materials, 293-304 , 2020 2020 Citations: 1
Study of RE ion-doped oxide glass 7 BNK Reddya, S Sailaja, K Thyagarajand, BS Reddya Spectroscopy of Lanthanide Doped Oxide Materials, 293 , 2019 2019
Spectroscopic properties of Dy 3+ -doped alkali and mixed alkali borosilicate glasses B Naveen Kumar Reddy, S Sailaja, K Thyagarajan, MV Ramanaiah, ... Ferroelectrics 531 (1), 51-61 , 2018 2018 Citations: 2
Optical Analysis of RE3+ (RE= Eu3+, Tb3+, Sm3+, and Dy3+): Ca2Gd2W3O14 Phosphors S Sailaja, V Chopra, SJ Dhoble, BS Reddy Phosphors, 183-218 , 2018 2018
Emission analysis of Tb 3+ ‐and Sm 3+ ‐ion‐doped (Li 2 O/Na 2 O/K 2 O) and (Li 2 O + Na 2 O/Li 2 O + K 2 O/K 2 O + Na 2 O)‐modified borosilicate glasses B Naveen Kumar Reddy, S Sailaja, K Thyagarajan, YD Jho, ... Luminescence 33 (3), 486-494 , 2018 2018 Citations: 5
Optical properties of Eu3+ & Tb3+ ions doped alkali oxide (Li2O/Na2O/K2O) modified boro phosphate glasses for red, green lasers and display device applications G Moulika, S Sailaja, BNK Reddy, VS Reddy, SJ Dhoble, BS Reddy Physica B: Condensed Matter 535, 2-7 , 2018 2018 Citations: 22
Optical analysis of RE3+ (RE= Eu, Tb): CdO-PbO-B2O3-AlF3 glasses B Suneetha, S Sailaja, SJ Dhoble, BS Reddy Optik 155, 216-224 , 2018 2018 Citations: 4
Emission analysis of Tb 3+ -and Sm 3+ -ion-doped (Li 2 O/Na 2 O/K 2 O) and (Li 2 O + Na 2 O/Li 2 O + K 2 O/K 2 O + Na 2 O)-modified borosilicate glasses. S Sailaja, K Thyagarajan, YD Jho, B Sudhakar Reddy Luminescence: the Journal of Biological and Chemical Luminescence 33 (3 … , 2017 2017
Luminescence analysis of SrGa 2 Si 2 O 8 : RE 3+ (RE = Dy, Tm) phosphors M R. Kadukar, SJ Dhoble, AK Sahu, V Nayar, S Sailaja, BS Reddy Luminescence 32 (2), 159-170 , 2017 2017 Citations: 3
Optical properties of Sm3+, Dy3+ doped alkali oxide (Li2O/ Na2O/ K2O) modified boro phosphate glasses SS G. Moulika, S. J. Dhoble, B.Sudhakar Reddy National Conference on Luminescence and Applications (NCLA-2017), 179 , 2017 2017
Emission analysis of RE3+ (RE= Eu, Sm, Dy): MgY4Si3O13 phosphors BS Reddy, MR Kadukar, HY Hwang, BS Ham, S Sailaja, U Rambabu, ... Physica B: Condensed Matter 463, 39-47 , 2015 2015 Citations: 9
Optical Properties of Tm3+ &Ho3+: Sr2Y2WO9 phosphors S Sailaja Ntional Seminar on Advances in Material Science and Nanotechnology (AMNT-2015) , 2015 2015
Optical properties of Nd3+-doped and Er3+–Yb3+ codoped borotellurite glass for use in NIR lasers and fiber amplifiers BS Reddy, HY Hwang, YD Jho, BS Ham, S Sailaja, CM Reddy, BV Rao, ... Ceramics International 41 (3), 3684-3692 , 2015 2015 Citations: 38
Photoluminescence properties of Er3+: Magnesium Yttrium Silicate phosphors S Sailaja National Seminar on Recent Trends in Physics (RTP-2015) , 2015 2015
Emission analysis of Tb3+: Strontium Yttrium Tungstate powder ceramics S Sailaja National conference on Recent Trends in Material Science (RTMS-2015) , 2015 2015
MOST CITED SCHOLAR PUBLICATIONS
Optical properties of Sm3+-doped cadmium bismuth borate glasses S Sailaja, CN Raju, CA Reddy, BDP Raju, YD Jho, BS Reddy Journal of Molecular Structure 1038, 29-34 , 2013 2013 Citations: 101
Judd–Ofelt analysis and photoluminescence properties of RE3+ (RE= Er & Nd): Cadmium lithium boro tellurite glasses KV Raju, CN Raju, S Sailaja, BS Reddy Solid State Sciences 15, 102-109 , 2013 2013 Citations: 57
Judd–Ofelt theory: optical absorption and NIR emission spectral studies of Nd 3+ :CdO–Bi 2 O 3 –B 2 O 3 glasses for laser applications CN Raju, CA Reddy, S Sailaja, HJ Seo, BS Reddy Journal of Materials Science 47 (2), 772-778 , 2012 2012 Citations: 55
Synthesis, photoluminescence and mechanoluminescence properties of Eu 3+ ions activated Ca 2 Gd 2 W 3 O 14 phosphors S Sailaja, SJ Dhoble, N Brahme, B Sudhakar Reddy Journal of materials science 46 (24), 7793-7798 , 2011 2011 Citations: 39
Optical properties of Nd3+-doped and Er3+–Yb3+ codoped borotellurite glass for use in NIR lasers and fiber amplifiers BS Reddy, HY Hwang, YD Jho, BS Ham, S Sailaja, CM Reddy, BV Rao, ... Ceramics International 41 (3), 3684-3692 , 2015 2015 Citations: 38
Synthesis and photoluminescence properties of Sm3+ and Dy3+ ions activated Ca2Gd2W3O14 phosphors S Sailaja, SJ Dhoble, BS Reddy Journal of Molecular Structure 1003 (1-3), 115-120 , 2011 2011 Citations: 36
Optical characterization of Eu3+ and Tb3+ ions doped cadmium lithium alumino fluoro boro tellurite glasses KV Raju, S Sailaja, CN Raju, BS Reddy Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 79 (1 … , 2011 2011 Citations: 26
Emission analysis of CdO–Bi2O3–B2O3 glasses doped with Eu3+ and Tb3+ CN Raju, S Sailaja, SH Raju, SJ Dhoble, U Rambabu, YD Jho, BS Reddy Ceramics International 40 (6), 7701-7709 , 2014 2014 Citations: 25
Emission analysis of Sm3+ and Dy3+: Ba3Y2WO9 ceramics KV Raju, CN Raju, S Sailaja, SJ Dhoble, BS Reddy Journal of luminescence 134, 297-302 , 2013 2013 Citations: 23
Sol–gel synthesis, structural and optical properties of rare earth ions (Sm3+ or Dy3+) activated Ca3Ga2Si3O12 powder phosphors MB Reddy, CN Raju, S Sailaja, BV Rao, BS Reddy Journal of luminescence 131 (12), 2503-2508 , 2011 2011 Citations: 23
Optical properties of Eu3+ & Tb3+ ions doped alkali oxide (Li2O/Na2O/K2O) modified boro phosphate glasses for red, green lasers and display device applications G Moulika, S Sailaja, BNK Reddy, VS Reddy, SJ Dhoble, BS Reddy Physica B: Condensed Matter 535, 2-7 , 2018 2018 Citations: 22
Synthesis, structural, photoluminescence and mechanoluminescence properties of Tb 3+ : Ca 2 Gd 2 W 3 O 14 novel green nanophosphors S Sailaja, SJ Dhoble, N Brahme, BS Reddy Journal of Materials Science 47 (5), 2359-2364 , 2012 2012 Citations: 19
Spectroscopic Investigations of Sm 3+ Ions Doped B 2 O 3 -Bi 2 O 3 -ZnO-Li 2 O Glasses MB Reddy, S Sailaja, P Giridhar, CN Raju, BS Reddy Ferroelectrics Letters 38 (1-3), 40-50 , 2011 2011 Citations: 14
Spectroscopic Studies of RE 3+ (RE = Eu, Tb, Sm & Dy): Lithium Lead Boro Tellurite Glasses P Giridhar, S Sailaja, MB Reddy, KV Raju, CN Raju, BS Reddy Ferroelectrics Letters 38 (1-3), 1-10 , 2011 2011 Citations: 13
Synthesis, the effect of rare earth ion concentration and temperature on luminescence properties of Eu3+: Ba3Y2WO9 ceramics KV Raju, S Sailaja, CN Raju, BS Reddy Journal of luminescence 131 (7), 1438-1442 , 2011 2011 Citations: 12
Emission analysis of RE3+ (RE= Eu, Sm, Dy): MgY4Si3O13 phosphors BS Reddy, MR Kadukar, HY Hwang, BS Ham, S Sailaja, U Rambabu, ... Physica B: Condensed Matter 463, 39-47 , 2015 2015 Citations: 9
Emission analysis of Pr3+ and Tm3+: Ca2Gd2W3O14 phosphors S Sailaja, SJ Dhoble, CN Raju, BS Reddy Physica B: Condensed Matter 407 (1), 103-107 , 2012 2012 Citations: 9
Structural and luminescence properties of RE3+ (RE= Eu, Tb):(MgCa) 2Bi4Ti5O20 ceramics S Sailaja, BS Reddy Ceramics International 37 (6), 1781-1787 , 2011 2011 Citations: 9
Optical absorption and NIR emission spectral studies of Er 3+ and Nd 3+ : zinc lithium bismuth borate glasses M Bhushana Reddy, S Sailaja, C Nageswara Raju, B Sudhakar Reddy Journal of Optics 43 (2), 101-107 , 2014 2014 Citations: 8
Spectroscopic investigations of Er 3+ :CdO–Bi 2 O 3 –B 2 O 3 glasses C Nageswara Raju, C Adinarayana Reddy, S Sailaja, HJ Seo, ... Luminescence 27 (5), 334-340 , 2012 2012 Citations: 8
