DataVXAdvanced Optical MaterialsPaper
journal article·2025-01Open access

Tunable Single‐Phase White Light Emission from Complex Perovskite Sr3CaNb2O9: Dy3+/Eu3+ Phosphors

Noor Zamin Khan, Sayed Ali Khan, Nisar Muhammad, Weilong Chen, Jahangeer Ahmed, Muhammad Amin Padhiar, Mei Chen, Marcin Runowski, Saad M. Alshehri, Baohua Zhang, Shu‐Sheng Pan, Ren‐Kui Zheng

Advanced Optical Materials· Volume 13· Issue 1
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Abstract

Abstract Sr3CaNb2O9:Dy3+/Eu3+ phosphors with a complex perovskite structure are prepared using a high‐temperature solid‐ state reaction technique. These phosphors are doped either singly or in combination with Dy3+/Eu3+ ions, resulting in efficient energy transfer from Dy3+ to Eu3+ and thus tunable‐color emission. Under 353 nm excitation, the Sr3CaNb2O9:Dy3+ phosphor emits blue (492 nm), yellow (583 nm), and red (682 nm) light, with the optimal doping concentration of Dy3+ of 0.04%. When excited by 394 nm (7F0 → 5L6), the Sr3CaNb2O9:Eu3+ phosphor exhibits two most intense emissions centered at 593 nm (5D0 → 7F1) and 614 nm (5D0 → 7F2). The decrease in luminescence intensity with increasing doping concentration of Dy3+ and Eu3+ is due to the cross‐relaxation associated with electric dipole–dipole interaction. Photoluminescence emission measurements under excitations of 353 and 365 nm indicate that the Sr3CaNb2O9:0.04Dy3+/0.05Eu3+ phosphor shows excellent thermal stability, even at a temperature of 150 °C, where the luminescence intensity preserves 79% of its initial value at room temperature. The electroluminescence performance of the Sr3CaNb2O9:0.04Dy3+/0.05Eu3+ phosphor is tested with 365 nm LED chips for potential use in white LEDs. The results confirm that Sr3CaNb2O9:0.04Dy3+/0.05Eu3+ phosphor has great potential for use in high‐power white LED applications as a single matrix.
Source: crossref · Quality: baseline

Research context

Electronic materials

OpenAlex topics: Luminescence Properties of Advanced Materials · Perovskite Materials and Applications · Ammonia Synthesis and Nitrogen Reduction

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Physics and Material Sciences Guangzhou University Guangzhou 510006 China

Research Center for Advanced Information Materials (CAIM) Huangpu Research and Graduate School of Guangzhou University Guangzhou 510555 China

Hoffmann Institute of Advanced Materials Shenzhen Polytechnic University Shenzhen 518055 China

Department of Chemistry and Chemical Biology Rutgers University Piscataway NJ 08854 USA

Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics University of Science and Technology of China Hefei 230026 China

Department of Chemistry Collage of Science King Saud University Riyadh 11451 Saudi Arabia

Center for Advanced Analytical Science Guangzhou Key Laboratory of Sensing Materials and Devices Guangdong Engineering Technology Research Center for Photoelectric Sensing Materials and Devices and School of Chemistry and Chemical Engineering Guangzhou University Guangzhou 510006 China

Faculty of Chemistry Adam Mickiewicz University Uniwersytetu Poznańskiego 8 Poznań 61–614 Poland

Key Lab of Si‐based Information Materials & Devices and Integrated Circuits Design Department of Education of Guangdong Province Guangzhou 510006 China

Funding

Bureau of Education of Guangzhou Municipality · Natural Science Foundation of Guangdong Province · National Natural Science Foundation of China · King Saud University

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