Dr. D. Balaji

Assistant Professor (Research)

Mobile: +91-9940855738, +91-887386324
Email ID (Personal) : balajidevakumarcgc@gmail.com
Email ID (Official)   : balaji.d.nano@sathyabama.ac.in

Educational Information

Postdoctoral Experience

Research Interests

• Synthesis of Inorganic Rare Earth Doped Oxides with Color-tunable Emissions for WLEDs
• Preparation of oxide materials through different synthesis routes
• Single Crystal Growth through the Czochralski method
• Preparation of rare-earth doped glass ceramics

Research Projects

Publications

1. Gao, H.; Devakumar, B.; Huang, X. Efficient and Thermally-Stable NIR-Emitting Ca2AlTaO6:Cr3+ Phosphors with Excellent Responsiveness to Phytochrome PFR for Plant Growth LEDs. Materials Today Chemistry 2025, 46, 102695. https://doi.org/10.1016/j.mtchem.2025.102695.
2. Kandasamy, M.; Husain, A.; Pandian, S. A.; Selvaraj, M.; Suresh, S.; Prem Gunnasegaran; Nalenthiran Pugazhenthiran; Sekar Thambidurai; Balaji, D. Greener and Facile Synthesis of Binary Zinc Oxide/Nickel Oxide Heterojunction Nanocomposite for Potential Solar Energy Conversion, Environmental Remediation and Energy Storage Applications. Results in Engineering 2024, 103842–103842. https://doi.org/10.1016/j.rineng.2024.103842.
3. Gao, H.; Balaji Devakumar; Huang, X. Near-Infrared Emitting Ca2AlNbO6:Cr3+ Double-Perovskite Phosphors for Plant Growth LEDs. Ceramics International 2024. https://doi.org/10.1016/j.ceramint.2024.12.261
4. Huang, X.; Gao, H.; Devakumar, B. High-Brightness Bi3+ Activated Gd2GeO5 Blue Phosphor for White Light-Emitting Diodes: Synthesis, Characterization, and Thermal Stability. Ceramics International 2025. https://doi.org/10.1016/j.ceramint.2025.01.438.
5. Daniel, D. J.; Prabhu, S. M.; Devakumar, B.; Nagirnyi, V.; Kudryavtseva, I.; Kim, H. J.; Kim, S. A Fluorozirconate Compound TlZrF5 Synthesised by a Facile Hydrothermal Method and Its Characterization. Ceramics International 2025. https://doi.org/10.1016/j.ceramint.2025.01.401.
6. Shyam, A.; Parameswaran, A. M.; Raju, R.; Amal Kaitheri, N. K.; Devakumar, B.; Swaminathan, R. A Comprehensive Study on the Impact of Off-Stoichiometry and Mg Doping in CuCrO2 Thin Films for Heterojunction Device Fabrication. ACS Applied Electronic Materials 2025, 7 (1), 348–359. https://doi.org/10.1021/acsaelm.4c01838.
7. Huang, X.; Cen, J.; Balaji Devakumar; Chen, X. High-Brightness and High-Color-Purity Red-Emitting Ca8MEu(PO4)7 (M = Mg and Zn) Phosphate Phosphors for Near-UV-Pumped Pc-WLEDs. Materials Today Chemistry 2024, 43, 102493–102493.
   https://doi.org/10.1016/j.mtchem.2024.102493.
8. Cen, J.; Devakumar, B.; Huang, X. Dazzling Red-Emitting Ca2EuMO6 (M = Sb, Nb, Ta) Double-Perovskite Phosphors with Potential Application in Phosphor-Converted White Light-Emitting Diodes. Inorganic Chemistry Communications 2024, 168, 112947. https://doi.org/10.1016/j.inoche.2024.112947.
9. Chan, J.; Devakumar, B.; Gao, H.; Huang, X. Efficient Violet-Light-Excitable Blue-Cyan-Emitting Ca2YHf2GaAl2O12:Ce3+ Garnet Phosphors Enable High-Color-Rendering Full-Spectrum Warm-White LEDs. Materials Today Chemistry 2024, 40, 102218.
   https://doi.org/10.1016/j.mtchem.2024.102218.
10. Huang, X.; Cao, L.; Devakumar, B. High-Brightness Red-Emitting Eu3+-Activated Ca2LuZr2Al3O12 Garnet Phosphors with Excellent Thermal Stability for Near-UV-Pumped White LEDs. Inorganic Chemistry Communications 2024, 162, 112232.
    https://doi.org/10.1016/j.inoche.2024.112232.
11. Xu, Z.; Cao, L.; Chan, J.; Balaji Devakumar; Huang, X. Full-Visible-Spectrum LED Lighting by Using a Near-UV-Excitable Broadband Blue-Emitting Ca2LuHf2GaAl2O12:Ce3+ Garnet Phosphor. Ceramics International 2024, 50 (4), 7048–7058.
    https://doi.org/10.1016/j.ceramint.2023.12.062.
12. Xian, C.; Chen, X.; Balaji Devakumar; Huang, X. Dazzling ca2LuScAl2Si2O12:Ce3+ Green-Emitting Garnet-Type Phosphors for Blue-Chip-Pumped White Light-Emitting Diodes: Broad Emission Band, High Quantum Efficiency and Excellent Thermal Stability. CrystEngComm 2024, 26 (22), 2862–2870. https://doi.org/10.1039/d4ce00258j.
13. Thambidurai, S.; Arumugam, J.; Kandasamy, M.; Balaji, D.; Pugazhenthiran, N.; Jothilakshmi, R.; Sathish Kumar, B.; Murugesan, K.; Karthick Kumar, S.; Muneeswaran, T.; Jayakumar, K.; Suresh, S. Vitex Negundo and Euphorbia Milii Leaf Extracts Aided Green Synthesis of Copper Oxide Nanostructures for Effective Inactivation of Pathogenic Bacteria. Chemical Physics Letters 2023, 832, 140881. https://doi.org/10.1016/j.cplett.2023.140881.
14. Li, W.; Ma, N.; Devakumar, B.; Huang, X. High-Color-Quality Blue-Light-Pumped Full-Spectrum White-Light-Emitting Diodes Realized by Efficient Green-Emitting CaY2HfScAl3O12:Ce3+ Phosphors. Journal of Luminescence 2023, 264, 120183.
    https://doi.org/10.1016/j.jlumin.2023.120183.
15. Cao, L.; Xu, Z.; Chan, J.; Balaji Devakumar; Huang, X. Realizing Full-Spectrum LED Lighting with a Bright Broadband Cyan-Green-Emitting CaY2ZrGaAl3O12:Ce3+ Garnet Phosphor. Journal of luminescence 2023, 263, 120015–120015. https://doi.org/10.1016/j.jlumin.2023.120015.
16. Li, W.; Ma, N.; Devakumar, B.; Huang, X. Highly Bright Broadband Cyan-Emitting CaLu2HfGaAl3O12:Ce3+ Garnet Phosphors for High-Color-Quality White Light-Emitting Diodes. Ceramics International 2023, 49 (18), 30355–30364.
    https://doi.org/10.1016/j.ceramint.2023.06.294.
17. Huang, X.; Xu, Z.; U. Near-UV-Excitable Broadband Green-Emitting Ca2LaHf2GaAl2O12:Ce3+ Garnet-Type Phosphors for High Color Rendering Warm-White LEDs. Ceramics International 2023, 49 (16), 26420–26427.
    https://doi.org/10.1016/j.ceramint.2023.05.178.
18. Yu, H.; Chan, J.; Balaji Devakumar; Huang, X. Highly Efficient Far-Red Emitting Mn4+-Activated Li3La3W2O12 Phosphors for Plant Growth LED Lighting. Materials Today Chemistry 2023, 30, 101584–101584. https://doi.org/10.1016/j.mtchem.2023.101584.
19. Chan, J.; Balaji Devakumar; Li, W.; Ma, N.; Huang, X.; Lee, A. F. Full-Spectrum Solid-State White Lighting with High Color Rendering Index Exceeding 96 Based on a Bright Broadband Green-Emitting Phosphor. Applied Materials Today 2022, 27, 101439–101439.
    https://doi.org/10.1016/j.apmt.2022.101439.
20. Ma, N.; Li, W.; Balaji Devakumar; Huang, X.; Lee, A. F. An Energy Transfer Strategy for Highly Luminescent Green-Emitting Ce3+/Tb3+ Codoped Ca2LaHf2Al3O12 Garnet Phosphors in White Light-Emitting Diodes. Materials Today Chemistry 2022, 24, 100773–100773. https://doi.org/10.1016/j.mtchem.2022.100773.

Awards & Honors

• Best Researcher Award -2024 by Sathyabama Institute of Science and Technology
• Top 2% Scientist (Stanford University,2024 2023)

National/International Conference & Events Organized

1. Two-day workshop on “Structural Analysis using Powder X-Ray Diffraction, Rietveld Refinement, HRTEM & SAED” (Hybrid Mode) at the Centre for Nanoscience and Nanotechnology and Sathyabama Centre for Advanced Studies during February 24-25, 2025.
2. One day Hybrid Mode Workshop on X-ray Photoelectron Spectroscopy: Basics, Instrumentation and Applications” at the Centre for Nanoscience and Nanotechnology and Advanced Characterization Facility at Sathyabama Centre for Advanced Studies on October 25, 2024.
3. Two-Days hands-on training program on "Advanced Microscopy Techniques: AFM, FESEM and HRSTEM" at the Advanced Characterization Facility, Sathyabama Institute of Science and Technology, Chennai, during September 19-20, 2024.
4. One day “National Workshop on X-ray Photoelectron Spectroscopy” at the International Research Centre, Sathyabama Institute of Science and Technology, Chennai on March 22, 2024.

Research Innovations

• Developed UV/near UV excitable single-phase white emitting phosphors for WLED and Displays
• Synthesized size-tunable and morphology-controllable rare earth doped inorganic oxides using different synthesis methods
• Grown Single Crystal through Top seeded solution growth by Czochralski method for LIDAR Applications

Social Media

• GooleScholar: https://scholar.google.com/citations?user=Wo4gzmYAAAAJ&hl=en
• ResearchGate Link : https://www.researchgate.net/profile/Balaji-Devakumar?ev=hdr_xprf

Additional Information

• Reviewer in the Journal of Luminescence, Journal of Alloys and Compounds, Ceramics International, ACS Applied Materials
• Experience in Handling X-ray Photoelectron Spectroscopy, Photoluminescence Spectrophotometer, UV-Vis NIR Spectrophotometer, and FTIR
• Experience in structure determination using Rietveld Refinement software such as Full Prof and GSAS