The developments of cyan emitting phosphors to fulfill the cyan emission gap of white-LEDs

Noor Zamin Khan; Sayed Ali Khan; Weilong Chen; Muhammad Amin Padhiar; Muhammad Tahir Abbas; Zakir Ullah; Marcin Runowski; Xin Xu; Ren-Kui Zheng

doi:10.3389/fchem.2023.1274410

The developments of cyan emitting phosphors to fulfill the cyan emission gap of white-LEDs

Front Chem. 2023 Oct 17:11:1274410. doi: 10.3389/fchem.2023.1274410. eCollection 2023.

Authors

Noor Zamin Khan¹, Sayed Ali Khan^{2

3}, Weilong Chen¹, Muhammad Amin Padhiar¹, Muhammad Tahir Abbas⁴, Zakir Ullah⁵, Marcin Runowski^{6

7}, Xin Xu⁸, Ren-Kui Zheng¹

Affiliations

¹ School of Physics and Material Sciences, Guangzhou University, Guangzhou, China.
² Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic, Shenzhen, China.
³ Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ, United States.
⁴ Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, Hefei, China.
⁵ Beijing Key Laboratory of Multiphase Flow and Heat Transfer for Low Grade Energy Utilization, North China Electric Power University, Beijing, China.
⁶ Departamento de Física, Universidad de La Laguna, Santa Cruz de Tenerife, Spain.
⁷ Faculty of Chemistry, Adam Mickiewicz University, Poznań, Poland.
⁸ CAS Key Laboratory of Materials for Energy Conversion, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, China.

Abstract

Future generations of solid-state lighting (SSL) will prioritize the development of innovative luminescent materials with superior characteristics. The phosphors converted into white light-emitting diodes (white LEDs) often have a blue-green cavity. Cyan-emitting phosphor fills the spectral gap and produces "full-visible-spectrum lighting." Full-visible spectrum lighting is beneficial for several purposes, such as light therapy, plant growth, and promoting an active and healthy lifestyle. The design of cyan garnet-type phosphors, like Ca₂LuHf₂Al₃O₁₂ (CLHAO), has recently been the subject of interest. This review study reports a useful cyan-emitting phosphor based on CLHAO composition with a garnet structure to have a cyan-to-green emitting color with good energy transfer. It could be employed as cyan filler in warm-white LED manufacturing. Due to its stability, ability to dope with various ions suitable for their desired qualities, and ease of synthesis, this garnet-like compound is a great host material for rare-earth ions. The development of CLHAO cyan-emitting phosphors has exceptionally high luminescence, resulting in high CRI and warm-white LEDs, making them a viable desire for LED manufacturing. The development of CLHAO cyan-emitting phosphors with diverse synthesis techniques, along with their properties and applications in white LEDs, are extensively covered in this review paper.

Keywords: cyan-emitting; full-visible-spectrum; garnet-type compound; stability; warm-white LEDs.

Publication types

Review

Grants and funding

The authors declare financial support was received for the research, authorship, and/or publication of this article. The authors would like to acknowledge the support of this work by the National Natural Science Foundation of China (U1732115, 21533007, 11974155), China National Petroleum Corporation (KD200121), and Key Discipline of Materials Science and Engineering, Bureau of Education of Guangzhou Municipality (Grant No. 202255464). MR acknowledges the support from the Fondo Social Europeo and the Agencia Estatal de Investigación (RYC 2020-028778-I).