Application No: 201921035528 A Publication Date: 01/11/2019 International classification: C10M12/18 Title of the invention: PROCESS FOR SYNTHESIS OF CE3+, EU2+ CO-DOPED BASIF6 PHOSPHOR Abstract: The present invention relates to a process for synthesis of Ce3+, Eu2+ co-doped BaSiF6 phosphor. Here in it is synthesized by low temperature solution combustion method at 500 ± 20 C using urea as a fuel. Photoluminescence characterization of Eu2+ doped phosphor shows a highly blue emission at max 460 nm under the excitation of 287 nm. The phosphors and the Ce3+ ions give little broadband emission in the UV range at 344 nm on exciting it at 300 nm. A broad PL excitation peak is obtained on co-doping Ce3+
with Eu2+ in the range of 300-425 nm highest intensity at 362 nm gives broad blue emission at 440 nm. This finds potential applications in the blue emitting phosphor converted WLEDs and optical display systems. Following invention is described in detail with the help of Figure 1 of sheet 1 showing XRD pattern of BASIF6 phosphor on doping/co-doping of Ce3+, Eu2+.
Application No: 202341003877 Publication Date: 17/02/2023 Title of the invention: Fabrication of Stable Lead Free Bismuth based Perovskite Solar Cells using a Non Toxic Solvent.
Abstract: Techniques of green fabrication of stable lead free bismuth based perovskite solar cells using a nontoxic solvent Placing a green film of uninterred Li-stuffed garnet precursor materials on top of a Li-stuffed garnet setter plate. Providing a green film comprising a Li-stuffed garnet or the chemical precursors to a Li-stuffed garnet. The green film is in proximity to a Li-stuffed garnet setter such that the setter prevents the loss of Li from the sintering green film. The build platform is selectively movable to the imaging device to accommodate the formation of multiple layers of the powder composite component. A lead-free low-melting-point glass composition having a softening point of lower as a second endothermic peak temperature by differential thermal analysis.
Lyoluminescence study of γ-ray irradiated Cu doped YCa4O(BO3)3 microcrystalline phosphors for Radiation Dosimetry Applications, Upendra Verma and S J Dhoble, European Chemical Bulletin, 12 (2023) 7623.
Photoluminescence and thermoluminescence study of Ca1.02Sr1.98Al2O6: Dy phosphor synthesized by combustion method with S P Tatte, N S Dhoble, and S J Dhoble, Materials Letters: X, 18 (2023) 100203.
Improvement of self-activated luminescence properties of Ca2KZn2 (VO4)3 down-conversion materials by SSR method based on co-doped Eu3+,Dy3+ rare earth ions concentrations with Chaitali Mehare and S J Dhoble, Journal of Molecular Structure 1264 (2022) 133250.
Synthesis characterization and Luminescence Properties of B2BiMg2V3O12 based phosphors with rare earth activated Dy3+ phosphor for solid state lighting with S P Tatte, N S Dhoble, and S J Dhoble, Mater. Sci. Eng. 1258 (2022) 012016.
Influence of rare earth ions on luminescent properties of self-emitting KCa2Mg2(VO4)3 phosphors for lighting application with S P Tatte, N S Dhoble, and S J Dhoble, Optik 270 (2022) 169976.
Investigation of good dopant (Sm, Cu, Tb, Mn, Sb) for radiation dosimetry in the γ-excited GdCa4O(BO3)3 phosphor: Mechanoluminescence study with Upendra Verma, Radiation Effects and Defects in Solids, 1135-1147 (2022).
Enhanced luminescence in co-doped LaCa4O(BO3)3 phosphor: Photoluminescence, Mechanoluminescence and Thermoluminescence study with Upendra Verma and S J Dhoble, Optik, 261, 2022, 169112.
Combustion-assisted spectroscopic investigation of Dy3+ activated SrYAl3O7 phosphor for LED and TLD applications with A. R. Kadam and S. J. Dhoble, J. of Molecular structure(Elsevier), 1233 (2021) 130150.
Theoretical analysis of electron vibrational interaction (EVI) parameters in 5d states of Eu2+ activated BaSiF6 downconversion phosphor with A. R. Kadam and S. J. Dhoble, J. of Molecular structure(Elsevier), 1229 (2021) 129505.
Thermoluminescence study of CaNa2(SO4)2 phosphor doped with Eu3+ and synthesized by combustion method with S. R. Bargat, Yatish Pauha and S.J.Dhoble, J. of Lumin, 36 (2020) 1862-68.
Study of europium doped CaAl2Si2O8 phosphor prepared by solution combustion synthesis: Optical, fracto-mechanoluminescence and thermoluminescence with R Sharma, S. J. Dhoble, OPTIK, 226 (2021) 165946.
Enhancement of blue emission in Ce3+, Eu2+ activated BaSiF6 downconversion phosphor by energy transfer mechanism: A photochromic phosphor with A. R. Kadam and S. J. Dhoble, J. of Luminescence(Elsevier), 229 (2021) 117676.
Eu(III) Doped Tri-Calcium Ca3(1-X-Z)Mz(PO4)2AX: X Host Array: Optical Investigations of Down-Conversion Red Phosphor for Boosting Display Intensity and High Color Purity with A. R. Kadam and S. J. Dhoble, New J. of Chemistry, 45 (2021) 7285-7307.
Photoluminescence Properties of Eu3+ doped KAl(SO4)2 Phosphor with S. R. Bargat, Yatish Pauha and S.J.Dhoble, J. of Physics (CS), 1913 (2021) 012027.
Novel red color emitting Ca0.995Mg2(SO4)3:0.5Eu2+ phosphor under UV, blue and green excitation for plant cultivation and WLEDs applications with S. R. Bargat, Yatish Pauha and S.J.Dhoble, 37 (2022) 463-71.
Combustion synthesis and spectroscopic investigation of CaNa2(SO4)2:Eu3 phosphor with S. R. Bargat, Yatish Pauha and S.J.Dhoble ,J. of Molecular Structure (Elsevier), 1221 (2020) 128838.
Girish C. Mishra, A.R. Kadam, and S.J. Dhoble, “Effect of singly, doubly and triply ionized ions on downconversion photoluminescence in Eu3+ doped Na2Sr2Al2PO4Cl9 phosphor: A comparative study”,Ceremic International (Elsevier),Acceptance 4, October 2019.
Girish C. Mishra, A.R. Kadam, R.S Yadav and S.J. Dhoble, “Thermoluminescence study of Eu3+ doped Na2Sr2Al2PO4Cl9 phosphor via doping of singly, doubly and triply ionized ions”,Ceremic International (Elsevier),Acceptance 26, August 2019
Girish C Mishra, S.J.Dhoble, R.S.Kher," Study of lyoluminescence of gamma-irradiated GdCa4O(BO3)3:Ce phosphors: mass of solute and pH of solvent as a key factor", Optik (Elsevier),158(2018) 826-830.
Girish C Mishra, S.J.Dhoble, R.S.Kher "Lyoluminescence study of gamma-ray irradiated Dy3+ activated CaB4O7 phosphors for dosimetry applications ", International Journal of Current Engineering and Scientific Research(IJCESR), 5(2018) 2394.
Girish C Mishra, K.K.Satapathy S.J.Dhoble, R.S.Kher "Urea assisted self combustion synthesis of CaAl2O4:Eu phosphor and its mechanoluminescence characterization", New J. Chem.(RSC), 41(2017) 2193-2197.
Girish C Mishra, K.K.Satapathy S.J.Dhoble, R.S.Kher “Mechanoluminescence and thermoluminescence characterization of Tb3+ doped CaAl2O4: a theoretical and experimental study” RSC Adv., 2015, 5, 79391–79396.
Girish C Mishra, K.K.Satapathy, R.S.Kher “Preparation Route, characterization and Dose measurement of MAl2O4( M=Ba, Ca, Mg) phosphors activated with Dy3+” Journal of Optoelectronics and Advanced Materials,2015,17,629-633.
Girish C Mishra, K.K.Satapathy,F.Khan, “ZnAl2O4:Eu novel phosphor: SEM and Mechanoluminescence characterization synthesized by solution combustion technique”, LUMINESCENCE: The journal of Biological and Chemical Luminescence. Vol.30,no.5, pp. 564-567,2015.
Girish C Mishra, K.K.Satapathy,“Hydrazine Assisted Self Combustion Synthesis of CaAl2O4:Eu Phosphor And Its Mechanoluminescence Characterization”, International journal of Sciences: Basic and Applied Research. Vol.16,Issue.1 2014,page 188-196.
Girish C Mishra, K.K.Satapathy, F.Khan “Role Of Dopants on Mechanoluminescence properties of γ-ray irradiated MgAl2O4 Phosphors” , International Journal of Chemistry, Vol.33, Issue.12, 2013,page 384-388
Girish C Mishra, K.K.Satapathy, F.Khan “BaAl2O4:Dy phosphor: Synthesis and Mechanoluminescence characterization”, International Journal of Engineering Science Invention., Vol. 2, Issue 4 , 2013, page 34-38.
Girish C Mishra, K.K.Satapathy, F.Khan “Effect of the fuels on the luminescence characterisation of Tb doped MgAl2O4 phosphors “, Chemical Science Transaction, Vol.2, No.4, 2013, page 1262-1267.
Girish C Mishra, K.K.Satapathy, “Dose dependence of Mechanoluminescence properties in MgAl2O4: Dy phosphor”, Journal Of Chemistry , Vol.2013, 2013, page 1-4.
Girish C Mishra,A.K.Upadhyay,S.J.Dhoble,R.S.Kher “Effect of Temperature on Lyoluminescence of Gamma Irradiated YCa4O(BO3)3:Ce phosphor, International journal of Innovation and Research , Vol.2, Issue.1, 2013,page 18-21.
Girish C Mishra, A.K.Upadhyay, K.K.Satapathy, S.J.Dhoble,R.S.Kher “Thermoluminescence and Mechanoluminescence of gamma-ray-irradiated CaB4O7:Dy phosphors: A comparative study”, International journal of Innovation and Research , Vol.1, Issue.1, 2012,page 63-68.
Girish C Mishra, A.K.Upadhyay, S.J.Dhoble, R.S.Kher “Synthesis and luminescence properties of rare earth doped gamma-ray-irradiated GdCa4O(BO3)3 phosphors”, Journal of Material Science,Vol 47,Issue 2,2012,page 898-901.
Girish C Mishra,A.K.Upadhyay,S.J.Dhoble,R.S.Kher “Correlation between thermoluminescence and mechanoluminescence of γ-ray-irradiated Dy doped BaB4O7 phosphors”, Journal of Material Science, Vol 47,Issue 6,2012,page 2752-2756.
Girish C Mishra, Rajiv Kumar and Arvind Dewangan,“Study of Coulomb dissociation for Nuclear Astrophysics with special reference to the Nucleosynthesis”,International journal of Mathematical Sciences,Technology and Humanities,Vol 14,2011,page 140-146.
Girish C Mishra, A.K.Upadhyay, S.J.Dhoble, R.S.Kher,“Thermoluminescence and lyoluminescence in γ-ray-irradiated and Ce3+ doped YCa4O(BO3)3 phosphors”, Journal of Material Science,Vol 46,2012,Issue 26,page 7275-7278.
Girish C Mishra, A.K.Upadhyay, S.J.Dhoble, R.S.Kher,“Thermoluminescence and mechanoluminescence of gamma-ray-irradiated SrB4O7:Dy phosphors”, Micro and Nano Letters, Vol 12,2011,Issue 6,page 978-981.
“ZnAl2O4:Eu Phosphor:Mechanoluminescence Characterization synthesized by solution combustion Technique” International Conference on Advances in Steel ,Power and Construction Technology , OPJIT,Raigarh-2015(Oral Presentation).
“Intellectual Property Rights and Academia:An Appraisal” National Seminar on Managing Resources and Intellectual property rights for research and development in technical education, OPJIT,Raigarh-2014(Oral Presentation).
“Dependence of lyoluminescence of gamma ray irradiated GdCa4O(BO3)3:Ce phosphor on pH value of the solvent” National Conferences on Luminescence and Its Application, Rani Durgavati University, Jabalpur, M.P-2014 ( Oral Presentation).
“Correlation between Thermoluminescence and Mechanoluminescence of gamma ray irradiated Eu activated MgSO4 phosphors” International Conference on Metallurgical and Materials Processes, Products and Applications , OPJIT,Raigarh-2014(Oral Presentation).
“Study of Thermoluminescnce Properties of gamma-ray-irradiated GdCa4O(BO3)3:Dy phosphor” National Conference VIMARSH-13, Chouksey Engineering College, Bilaspur- 2013(Oral presentation).
“Thermoluminescence characterization of Ce doped LnCa4O(BO3)3[Ln=Gd,La,Y] Phosphors” National Conferences on Luminescence and Its Application, PESIT, Bengaluru-2013.(Oral Presentation).
“Thermoluminescence in Ce doped CaB4O7 and GdCa4O(BO3)3 phosphors:Role of Gd3+ ions” International Conferences on Luminescence and Its Application,RGUKT,Hyderabad-2012.( Oral Presentation).
“Mechanoluminescence of gamma-ray-irradiated MgAl2O4:Dy phosphors” International Conference on Innovation and Research in Technology for Sustainable Development, OPJIT, Raigarh-2012.( Oral presentation).
“Sudies on Lyoluminescenceof γ-ray irradiated rare earth doped LnCa4O(BO3)3 Phophors” National Conference on Recent Trends in Physics of Solids, Govt.V.Y.T.P.G. Auto College, Durg-2011( Oral presentation).
Delivered an Invited talk as Resource Person on “Stress Management & Care of Co-workers in an e-FDP organised by NIDM and SVKM’s Narsee Monjee Institute of Management Studies, Shirpur, Dec 14, 2020.
Delivered an Invited talk as Resource Person on “Women Leadership & DRR” in a e-FDP organized by NIDM and Sharda University, Greater Noida, Feb 23, 2021.
Delivered an Invited talk as Resource Person on “Pandemic and Mental wellbeing” in a Webinar organized by NIDM and St Xavier's University, Kolkata, March 12, 2021.
Delivered an Invited talk as Resource Person on “Green City Concept” in a Webinar organised by NIDM and IIDM, Tamilnadu, May 9, 2021.
Delivered an Invited talk as Resource Person on “Mental Stress and Women during Pandemic” in an e-FDP organised by NIDM and Sri Sri University, Odisa, May 23, 2021.
Delivered an Invited talk as Resource Person on “Social impact of Disaster on Vunerable groups & regions” in an e-MDP organised by NIDM and ICFAI Business School, Hyderabad, June 24, 2021.
Delivered an Invited talk as Resource Person on “Women & DRR” in an e-FDP organised by NIDM and Mahatma Gandhi State Institute of Public Administration, Chandigarh, Punjab, July 8, 2021.
Delivered an Invited talk as Resource Person on “Women & DRR” in an e-FDP organised by NIDM and SRMU UP, May 21, 2021.
Delivered an Invited talk as Resource Person on “Pandemic and Mental wellbeing” in a webinar series organised by NGO SHARP, New Delhi May 1, 2021.
Delivered an Invited talk as Resource Person on “Women & DRR” in an e-FDP organised by NIDM and Inverties University, Bareli, UP, September 30, 2021.
Delivered an Invited talk as Resource Person on “Women & DRR” in an e-FDP organised by NIDM and Shyama Prasad Mukherji College, University of Delhi, March 5,2021.
Delivered an Invited talk as Resource Person on “Psycho-Social Care for coworkers” in an e-FDP organised by NIDM and University of Petrolium and Energy Studies Deharadun, Jan 2021.
Delivered an Invited talk as Resource Person on “Mental wellbeing and DRR” in an e-FDP organised by NIDM and Gurunanak Deo University, Amritsar, March 2021.
Delivered an Invited talk as Resource Person on “E-Waste Management” in a Webinar organised by Inverties University in Association with Mission LiFE (Lifestyle for Environment), Bareli, 19th December, 2022.
Delivered a talk as Resource Person on “Waste management with emphasis on E-Waste Management” in a 5-day e-FDP organised by Academic Staff College & School of Science, OP Jindal University, Raigarh, 27-31 March, 2023.
