Light Converting Inorganic Phosphors for White Light-Emitting Diodes

By Lei Chen, Chun-Che Lin, C. Yeh, Ru-Shi Liu. Materials, 2010

509 citations recorded by the source corpus.

White light-emitting diodes (WLEDs) have matched the emission efficiency of florescent lights and will rapidly spread as light source for homes and offices in the next 5 to 10 years. WLEDs provide a light element having a semiconductor light emitting layer (blue or near-ultraviolet (nUV) LEDs) and photoluminescence phosphors. These solid-state LED lamps, rather than organic light emitting diode (OLED) or polymer light-emitting diode (PLED), have a number of advantages over conventional incandescent bulbs and halogen lamps, such as high efficiency to convert electrical energy into light, reliability and long operating lifetime. To meet with the further requirement of high color rendering index, warm light with low color temperature, high thermal stability and higher energy efficiency for WLEDs, new phosphors that can absorb excitation energy from blue or nUV LEDs and generate visible emissions efficiently are desired. The criteria of choosing the best phosphors, for blue (450−480 nm) and nUV (380−400 nm) LEDs, strongly depends on the absorption and emission of the phosphors. Moreover, the balance of light between the emission from blue-nUV LEDs and the emissions from phosphors (such as yellow from Y3Al5O12:Ce3+) is important to obtain white light with proper color rendering index and color temperature. Here, we will review the status of phosphors for LEDs and prospect the future development.

Subfields: Condensed Matter Physics, Electrical and Electronic Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/7665eac7d99d9291293acfc2b4d993ed197bc7d4

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Electrical and Electronic Engineering

1. Shyue Ping Ong
2. Gerbrand Ceder
3. Yifei Mo

In Materials Chemistry

1. Zhenbin Wang
2. J. McKittrick
3. Shyue Ping Ong
4. Gerbrand Ceder

Citations in the corpus

• Mining Unexplored Chemistries for Phosphors for High-Color-Quality White-Light-Emitting Diodes (2018, background): “Lu3Al5O12:Ce 3+ and (Ba,Sr)2SiO4:Eu 2+ are two well-known green emitters with good photoluminescence (PL) properties used for these phosphor mixtures.(5)”