Optimization and luminescence studies of Sm3+ doped LiCaBO3 phosphors for high-performance white light-emitting diodes
An undoped and a series of orange-red emitting LiCaBO3:Sm3+ (x = 0.5–3 mol%) phosphors have been synthesized using a highly reliable and cost-effective combustion method. The synthesized phosphors were characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), photo...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-12-01
|
| Series: | Chemical Physics Impact |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667022424002408 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850224903423262720 |
|---|---|
| author | Manta Sharma Hritiksha Sharma Isha Charak H.C. Swart Vinay Kumar |
| author_facet | Manta Sharma Hritiksha Sharma Isha Charak H.C. Swart Vinay Kumar |
| author_sort | Manta Sharma |
| collection | DOAJ |
| description | An undoped and a series of orange-red emitting LiCaBO3:Sm3+ (x = 0.5–3 mol%) phosphors have been synthesized using a highly reliable and cost-effective combustion method. The synthesized phosphors were characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), photoluminescence spectroscopy (PL), and Diffuse Reflectance spectroscopy (DRS). The structural studies of the LiCaBO3:Sm3+phosphor confirm the single-phase orthorhombic structure with space group Pbca and the presence of borate anionic groups. Upon near-UV excitation at 405 nm, the PL emission spectra show four emission peaks centered at 564 nm, 602 nm, 650 nm, and 708 nm corresponding to the 4G5/2 → 6H5/2, 4G5/2 → 6H7/2, 4G5/2 → 6H9/2 and 4G5/2 → 6H11/2 transitions respectively resulting in the emission of orange-red light. The optimum dopant concentration of Sm3+ion was 1 mol% and the main mechanism of concentration quenching was calculated using Dexter's theory. The bandgap of the undoped phosphor was found to be 5.31 eV. The CIE chromaticity coordinates are (0.56, 0.40) which confirms the orange-red emission. The obtained results indicate that the synthesized phosphor can be a potential candidate for application in solid-state lighting devices. |
| format | Article |
| id | doaj-art-fd6748db99df4430b95fabd2a4982f0b |
| institution | OA Journals |
| issn | 2667-0224 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Chemical Physics Impact |
| spelling | doaj-art-fd6748db99df4430b95fabd2a4982f0b2025-08-20T02:05:31ZengElsevierChemical Physics Impact2667-02242024-12-01910069610.1016/j.chphi.2024.100696Optimization and luminescence studies of Sm3+ doped LiCaBO3 phosphors for high-performance white light-emitting diodesManta Sharma0Hritiksha Sharma1Isha Charak2H.C. Swart3Vinay Kumar4Department of Physics and Astronomical Sciences, Central University of Jammu, Rahya-Suchani, Samba-181143, J&K, IndiaDepartment of Physics and Astronomical Sciences, Central University of Jammu, Rahya-Suchani, Samba-181143, J&K, IndiaDepartment of Physics and Astronomical Sciences, Central University of Jammu, Rahya-Suchani, Samba-181143, J&K, IndiaDepartment of Physics, University of the Free State, P.O. Box 339, Bloemfontein, ZA9300, South AfricaDepartment of Physics and Astronomical Sciences, Central University of Jammu, Rahya-Suchani, Samba-181143, J&K, India; Department of Physics, University of the Free State, P.O. Box 339, Bloemfontein, ZA9300, South Africa; Corresponding author.An undoped and a series of orange-red emitting LiCaBO3:Sm3+ (x = 0.5–3 mol%) phosphors have been synthesized using a highly reliable and cost-effective combustion method. The synthesized phosphors were characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), photoluminescence spectroscopy (PL), and Diffuse Reflectance spectroscopy (DRS). The structural studies of the LiCaBO3:Sm3+phosphor confirm the single-phase orthorhombic structure with space group Pbca and the presence of borate anionic groups. Upon near-UV excitation at 405 nm, the PL emission spectra show four emission peaks centered at 564 nm, 602 nm, 650 nm, and 708 nm corresponding to the 4G5/2 → 6H5/2, 4G5/2 → 6H7/2, 4G5/2 → 6H9/2 and 4G5/2 → 6H11/2 transitions respectively resulting in the emission of orange-red light. The optimum dopant concentration of Sm3+ion was 1 mol% and the main mechanism of concentration quenching was calculated using Dexter's theory. The bandgap of the undoped phosphor was found to be 5.31 eV. The CIE chromaticity coordinates are (0.56, 0.40) which confirms the orange-red emission. The obtained results indicate that the synthesized phosphor can be a potential candidate for application in solid-state lighting devices.http://www.sciencedirect.com/science/article/pii/S2667022424002408BoratesCombustion methodPhosphorsPhotoluminescenceW-LEDs |
| spellingShingle | Manta Sharma Hritiksha Sharma Isha Charak H.C. Swart Vinay Kumar Optimization and luminescence studies of Sm3+ doped LiCaBO3 phosphors for high-performance white light-emitting diodes Chemical Physics Impact Borates Combustion method Phosphors Photoluminescence W-LEDs |
| title | Optimization and luminescence studies of Sm3+ doped LiCaBO3 phosphors for high-performance white light-emitting diodes |
| title_full | Optimization and luminescence studies of Sm3+ doped LiCaBO3 phosphors for high-performance white light-emitting diodes |
| title_fullStr | Optimization and luminescence studies of Sm3+ doped LiCaBO3 phosphors for high-performance white light-emitting diodes |
| title_full_unstemmed | Optimization and luminescence studies of Sm3+ doped LiCaBO3 phosphors for high-performance white light-emitting diodes |
| title_short | Optimization and luminescence studies of Sm3+ doped LiCaBO3 phosphors for high-performance white light-emitting diodes |
| title_sort | optimization and luminescence studies of sm3 doped licabo3 phosphors for high performance white light emitting diodes |
| topic | Borates Combustion method Phosphors Photoluminescence W-LEDs |
| url | http://www.sciencedirect.com/science/article/pii/S2667022424002408 |
| work_keys_str_mv | AT mantasharma optimizationandluminescencestudiesofsm3dopedlicabo3phosphorsforhighperformancewhitelightemittingdiodes AT hritikshasharma optimizationandluminescencestudiesofsm3dopedlicabo3phosphorsforhighperformancewhitelightemittingdiodes AT ishacharak optimizationandluminescencestudiesofsm3dopedlicabo3phosphorsforhighperformancewhitelightemittingdiodes AT hcswart optimizationandluminescencestudiesofsm3dopedlicabo3phosphorsforhighperformancewhitelightemittingdiodes AT vinaykumar optimizationandluminescencestudiesofsm3dopedlicabo3phosphorsforhighperformancewhitelightemittingdiodes |