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Vol. 38 No. 4 (2026): Vol 38 Issue 4, 2026

Copyright (c) 2026 Deva Prasad Raju Borelli, MALLIKARJUNA A, Chengaiah thummala, CHANDRA SEKHAR P, MOLIKA G

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This work is licensed under a Creative Commons Attribution 4.0 International License.

Structural, Photoluminescence and Colorific Properties of Sm3+ doped ZnMoO4 Phosphors for Warm White LEDs

https://doi.org/10.14233/ajchem.2026.35573
M. Mallikarjuna
Department of Physics, Sri Venkareswara University, Tirupati-517502, India
Thummala Chengaiah
Department of Physics, Sri Venkareswara University, Tirupati-517502, India
https://orcid.org/0009-0006-2108-9317
Y. Baby
Department of Physics, Sri Venkareswara University, Tirupati-517502, India
https://orcid.org/0009-0006-5620-8662
G. Moulika
Department of Physics, Dravidian University College of Engineering, Kuppam-517426, India
https://orcid.org/0009-0005-9922-8375
Borelli Deva Prasad Raju
Department of Physics, Sri Venkareswara University, Tirupati-517502, India
https://orcid.org/0000-0002-3485-1060

Corresponding Author(s) : Borelli Deva Prasad Raju

drdevaprasadraju@gmail.com

Asian Journal of Chemistry, Vol. 38 No. 4 (2026): Vol 38 Issue 4, 2026

Abstract

Zinc molybdates (ZnMoO4) phosphors activated with different samarium (Sm3+) amounts (0.5, 1.0, 1.5 and 2.0 mol%) were synthesised using a low temperature initiated citrate gel combustion process. The crystal structure of ZnMoO4:Sm3+ phosphors were analysed by XRD and their size was determined to be approximately 20 nm by the Scherrer equation. The FTIR spectral studies confirmed the presence of the distinct functional groups in the prepared phosphors. When the n-UV was excited to 402 nm, four emission maxima (PL) were detected at 567, 602, 649 and 708 nm. These were linked to the Sm3+ ion transitions: 4G5/2→6H5/2 (yellow), 6H7/2 (orange), 6H9/2 (reddish orange) and 6H11/2 (red). Dexter and Shulman’s theory studied the multipolar interaction that causes photoluminescence (PL) quenching via dipole-dipole type interaction in the present ZnMoO4:Sm3+ phosphors. The double-exponential function was used to fit the decay curves of the prepared phosphors and their lifetimes were found to be 1.23, 1.19, 1.11 and 1.09 ms. The colorimetric characteristics, which span the values (x, y) of 0.60 and 0.40, the colour purity of 96% and the colour temperatures below 2000 K, indicate that the fluorescent materials ZnMoO4:Sm3+ have great potential for use in light-emitting diodes (warm-LEDs).

Keywords

Samarium ZnMoO4 phosphors Crystal structure-XRD Photoluminescence Decay curves Colorific properties
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Mallikarjuna, M.; Chengaiah, T.; Baby, Y.; Moulika, G.; Raju, B. D. P. Structural, Photoluminescence and Colorific Properties of Sm3+ Doped ZnMoO4 Phosphors for Warm White LEDs. ajc 2026, 38, 1002-1006.
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References
  1. Z. Xiao, J. Ye, B. Wu, F. Wang, J. Li, B. Zhang, W. Liu, L. Han and W. You, Appl. Phys., A Mater. Sci. Process., 128, 120 (2022); https://doi.org/10.1007/s00339-021-05218-w
  2. V. Singh, A. Yadav, C.B. Annapurna Devi, A.S. Rao and N. Singh, Optik, 242, 167264 (2021); https://doi.org/10.1016/j.ijleo.2021.167264
  3. M. Sharma, H. Sharma, I. Charak, H.C. Swart and V. Kumar, Chem. Phys. Impact., 9, 100696 (2024); https://doi.org/10.1016/j.chphi.2024.100696
  4. H. Guo, B. Devakumar, R. Vijayakumar, P. Du and X. Huang, RSC Adv., 8, 33403 (2018); https://doi.org/10.1039/C8RA07329E
  5. R. Cao, W. Wang, Y. Ren, Z. Hu, X. Zhou, Y. Xu, Z. Luo and A. Liang, J. Lumin., 235, 118054 (2021); https://doi.org/10.1016/j.jlumin.2021.118054
  6. B. Goswami, R. Ahlawat and S. Devi, J. Mater. Sci., 58, 18029 (2023); https://doi.org/10.1007/s10853-023-09151-6
  7. G. Sowjanya, R. Doddoji and V.R. Minnam Reddy, Radiat. Phys. Chem., 190, 109791 (2022); https://doi.org/10.1016/j.radphyschem.2021.109791
  8. V. Chauhan, P.K. Pandey, P. Dixit, P. Deshmukh, S. Satapathy and P.C. Pandey, J. Lumin., 248, 118994 (2022); https://doi.org/10.1016/j.jlumin.2022.118994
  9. A.B. Chavan, A.B. Gawande, V.B. Gaikwad, G.H. Jain and M.K. Deore, J. Lumin., 234, 117996 (2021); https://doi.org/10.1016/j.jlumin.2021.117996
  10. M.G. Nikolić, D.J. Jovanović, V. Đorđević, Ž. Antić, R.M. Krsmanović and M.D. Dramićanin, Phys. Scr., T149, 014063 (2012); https://doi.org/10.1088/0031-8949/2012/T149/014063
  11. H. Seshagiri Rao, P. Nagaraja, S. Sharma, G.R. Rao and P. Justin, Mater. Today Sustain., 27, 100932 (2024); https://doi.org/10.1016/j.mtsust.2024.100932
  12. B. Singh, A. Tamta, B. Chandra, N.D. Kandpal, S.S. Jadaun, A.K. Panwar, K.V. Babu, P. Justin, H. Seshagiri Rao and K.S.K.R.C. Sekhar, Ceram. Int., 49, 38047 (2023); https://doi.org/10.1016/j.ceramint.2023.09.135
  13. H. Gurusamy, R. Sivasubramanian, Y. Johnbosco and M. Bhagavathiachari, Chem. Pap., 75, 1715 (2021); https://doi.org/10.1007/s11696-020-01420-x
  14. R. Roshani and A. Tadjarodi, Mater. Today Commun., 26, 101794 (2021); https://doi.org/10.1016/j.mtcomm.2020.101794
  15. F.B. Xiong, H. Chen, H.F. Lin, X.G. Meng, E. Ma and W.Z. Zhu, J. Lumin., 209, 89 (2019); https://doi.org/10.1016/j.jlumin.2019.01.034
  16. P.K. Pandey and P.C. Pandey, J. Lumin., 242, 118600 (2022); https://doi.org/10.1016/j.jlumin.2021.118600
  17. S. Wang, H. Zhang, T. Wang, H. Lv, X. Zou, Y. Wei, W. Hu and C. Su, J. Alloys Compd., 823, 153822 (2020); https://doi.org/10.1016/j.jallcom.2020.153822
  18. A. Herrera, A. Becerra and N. M. Balzaretti, J. Lumin., 188, 193 (2017); https://doi.org/10.1016/j.jlumin.2017.04.033
  19. V. Chauhan, P. Dixit and P.C. Pandey, J. Rare Earths, 39, 1336 (2021); https://doi.org/10.1016/j.jre.2020.10.014
  20. P.K. Vishwakarma, A. Bahadur, A. Maurya and S.B. Rai, Mater. Res. Bull., 115, 219 (2019); https://doi.org/10.1016/j.materresbull.2019.03.029
  21. Y.N. Rajeev, K. Venkatarao, B.V.N. Kumar, L.B. Kumar and S. Cole, Mater. Today Proc., 49, A1 (2022); https://doi.org/10.1016/j.matpr.2021.12.554
  22. Y. Liang, P. Liu, H.B. Li and G.W. Yang, Cryst. Growth Des., 12, 4487 (2012); https://doi.org/10.1021/cg3006629
  23. N. Maheswari and G. Muralidharan, Appl. Surf. Sci., 416, 461 (2017); https://doi.org/10.1016/j.apsusc.2017.04.094
  24. D. Chen, M. Liu, L. Yin, T. Li, Z. Yang, X. Li, B. Fan, H. Wang, R. Zhang, Z. Li, H. Xu, H. Lu, D. Yang, J. Sun and L. Gao, J. Mater. Chem., 21, 9332 (2011); https://doi.org/10.1039/c1jm11447f
  25. R.L. Frost and S.J. Palmer, J. Raman Spectrosc., 42, 2042 (2011); https://doi.org/10.1002/jrs.2959
  26. Z. Wang, H. Liang, M. Gong and Q. Su, Opt. Mater., 29, 896 (2007); https://doi.org/10.1016/j.optmat.2005.12.010
  27. H. Li, X. Gong, Y. Chen, J. Huang, Y. Lin, Z. Luo and Y. Huang, J. Rare Earths, 36, 456 (2018); https://doi.org/10.1016/j.jre.2017.09.014
  28. A.N. Kumar, D.M. Jnaneshwara, H. Nagabhushana, C. Pratapkumar, C.R. Ravikumar, M.R.A. Kumar, T.R.S. Shekhar and S.C. Prashantha, Appl. Surf. Sci. Adv., 4, 100070 (2021); https://doi.org/10.1016/j.apsadv.2021.100070
  29. R. Mahajan and R. Prakash, Mater. Chem. Phys., 246, 122826 (2020); https://doi.org/10.1016/j.matchemphys.2020.122826
  30. A. Balakrishna, H.C. Swart, R. Ramaraghavulu, A.K. Bedyal, R.E. Kroon and O.M. Ntwaeaborwa, J. Alloys Compd., 727, 224 (2017); https://doi.org/10.1016/j.jallcom.2017.08.117
  31. B. Han, B. Liu, Y. Dai and J. Zhang, Mater. Res. Bull., 121, 110612 (2020); https://doi.org/10.1016/j.materresbull.2019.110612
  32. M. Xie, X. Min, Z. Huang, Y. Liu, X. Wu and M. Fang, Chem. Phys. Lett., 710, 84 (2018); https://doi.org/10.1016/j.cplett.2018.08.080
  33. P. Singh, S. Modanwal, H. Mishra and S.B. Rai, RSC Adv., 13, 22663 (2023); https://doi.org/10.1039/D3RA04468H
  34. P. Kumar, D. Singh, I. Gupta, S. Singh and V. Kumar, Chem. Phys. Lett., 812, 140277 (2023); https://doi.org/10.1016/j.cplett.2022.140277
  35. I. Jlassi, R. Doddoji, S. Brahem, B. Gelloz, V.R. Minnam Reddy and S. Alhammadi, J. Lumin., 275, 120810 (2024); https://doi.org/10.1016/j.jlumin.2024.120810
  36. P. Meejitpaisan, R. Doddoji, S. Kothan, H.J. Kim, V.R. Minnam Reddy, S. Alhammadi and J. Kaewkhao, Mater. Res. Bull., 185, 113295 (2025); https://doi.org/10.1016/j.materresbull.2025.113295
  37. B. Qi, B. Mu, J. Huang, R. Song and Y. Dong, Optical Analysis of Dy3+/Sm3+ Co-Doped Nay(MoO4)2 Phosphors for Warm White Led SSRN (2022); https://doi.org/10.2139/ssrn.4260090
  38. W.-T. Wu, K.-K. Tiong, Y.-W. Lee, S.-Y. Hu, Y.-C. Lee and W. Huang, Appl. Sci., 12, 7883 (2022); https://doi.org/10.3390/app12157883
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