Recent progress in luminescence tuning of Ce3+ and Eu2+-activated phosphors for pc-WLEDs
Nowadays, phosphor converted white light-emitting diodes (pc-WLEDs) have been widely used in solid-state lighting and display areas due to their superior lifetime, efficiency, and reliability as well as significant reduction in power consumption. Phosphors are indispensable components of pc-WLED dev...
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| Main Authors | , , , |
|---|---|
| Format | Journal Article |
| Language | English |
| Published |
01.01.2015
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| Online Access | Get full text |
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| Summary: | Nowadays, phosphor converted white light-emitting diodes (pc-WLEDs) have been widely used in solid-state lighting and display areas due to their superior lifetime, efficiency, and reliability as well as significant reduction in power consumption. Phosphors are indispensable components of pc-WLED devices, and their luminescence properties determine the quality of WLED lighting and displays. In order to further achieve high luminous efficacy, chromatic stability, and color-rending properties in pc-WLEDs, much effort has been focused on improving current pc-WLED phosphors and developing novel pc-WLED phosphors recently. This review article concerns commonly used rare earth ion (Eu
2+
and Ce
3+
) activated inorganic phosphors, highlighting the important effect of spectral tuning
via
local structural variations on improving the luminescence performance of phosphors. The main spectral tuning strategies are discussed in detail and summarized, including (1) doping level control; (2) cationic substitution; (3) anionic substitution; (4) cationic-anionic substitution; (5) the crystal-site engineering approach; (6) mixing of nanophases.
This review is devoted to several approaches to realize spectral tuning for improving the luminescence performance of Ce
3+
and Eu
2+
-activated pc-WLED phosphors. |
|---|---|
| Bibliography: | Jun Lin is a professor at the Changchun Institute of Applied Chemistry (CIAC), Chinese Academy of Sciences (CAS). He received BSc and MSc degrees in inorganic chemistry from Jilin University, in 1989 and 1992, respectively, and a PhD degree (inorganic chemistry) from CIACCAS, in 1995. He has worked as a postdoctor for more than 4 years in CityU (HK, 1996), INM (Germany, 1997) and VCU/UNO (USA, 1998-1999). His research interests include luminescent materials and multifunctional composite materials together with their applications in display, lighting and biomedical fields. He has published more than 400 peer-reviewed journal articles in related fields. Guogang Li is currently an associate professor in the China University of Geosciences (Wuhan). He received his BSc degree from the Hebei Normal University of Science & Technology in 2007 and was a graduate student at the Changchun Institute of Applied Chemistry (CIAC), Chinese Academy of Sciences, and received a PhD degree in 2012. After graduation, he worked as a postdoctor in Taiwan University for one year. His current research interests mainly include synthesis of luminescent materials for field emission displays (FEDs) and white light emitting diodes (W-LEDs) via solid state reaction and soft chemistry methods. Ying Tian is currently studying for her master's degree in the China University of Geosciences (Wuhan). She received her BSc degree from the College of Technology, Hubei Engineering University in 2014 and entered into Prof. Guogang Li's group in the same year. Her current research interests focus on the synthesis of pc-WLED phosphors for white light emitting diodes (W-LEDs) for solid-state lighting and displays via solid state reaction and soft chemistry methods. Yun Zhao is now a postgraduate student in China University of Geosciences (Wuhan). She received her BSc from JiangHan University in 2011. She worked as a chemical laboratory technician for 3 years after undergraduate graduation. Now, Prof. Guogang Li is her supervisor for her Master's degree. Her current research interests focus on the synthesis of pc-WLED phosphors for white light emitting diodes (W-LEDs) for solid-state lighting and displays via solid state reaction and soft chemistry methods. |
| ISSN: | 0306-0012 1460-4744 |
| DOI: | 10.1039/c4cs00446a |