Phosphors

Phosphors are substances that convert energy from electron beams, electromagnetic waves, and ultraviolet photons primarily into visible light.

Phosphors for X-ray/Specialty Phosphors Under Development: Fluorescent Lanthanide Complex

Nichia's Speciality Phosphor and Phosphors for X-ray Applications

Nichia's phosphors are used in medical applications, baggage inspection, and image intensifiers, to protect peoples health and safety.

Baggage Inspection

Phosphors for X-ray are used for baggage inspection, such as security checks at airports.

X-ray Photography

Phosphors are used for medical applications, such as X-ray inspections.

Features of Nichia's Phosphor

High Efficiency
Nichia's phosphor has high efficiency due to the control of impurities and internal defects as well as improved crystallinity.
Particle Shape Control
Sharp Particle Size Distribution
Particle uniformity is achieved through synthesis and dispersion processing technologies cultivated over more than half a century of phosphor manufacturing and development. Another feature is that they are highly stability and easy to handle.

Characteristics and particle size can be discussed separately with Nichia.

Nichia's Phosphor Products

Chemical Formula	Part No.	Average Particle Size(µm)	Median Particle Size(µm)	PeakWavelengthλp(nm)	DecayTime	Afterglow@15ms(%)	Material	True Specific Gravity	Applications
Gd₂O₂S:Tb	NP-3010	2.0~11.0	3.0~12.0	545	<1ms	0.01	Powder	7.50	Phosphors for X-ray : X-ray Intensifying Screens / Baggage Inspection
Gd₂O₂S:Pr	NP-3012	3.5~11.5	5.0~13.0	513	<10µs	<0.01		7.50
BaFCl:Eu	NP-3050	≒4	≒9	380	<10µs	<0.01		4.56
BaFBrI:Eu	NP-3055	2.2~5.4	3.0~7.7	-	<10µs	<0.01		5.27
Gd₂O₂S:Tb	NP-1043	1.4~5.3	1.4~6.7	545	<1ms	0.01	Powder	7.50	Specialty Phosphors : Image Intensifiers
Y₂O₂S:Tb	NP-1045	1.5~2.7	1.7~3.3	545	<1ms	0.03		4.95
Y₃(Al,Ga)₅O₁₂:Ce	NP-1046	1.7~3.5	2.2~4.3	520	<100ns	0.01		4.96
Y₂SiO₅:Ce	NP-1047	≒3.5	≒5.9	400	<100ns	0.01		4.36

Phosphors Technical Data

- The available particle sizes varies depending on the Part No. A list is available upon request.

For detailed information on the phosphors, contact Nichia via the Contact Form.

Under Development: Fluorescent Lanthanide Complex

Fluorescent Lanthanide Complex are composed of Eu(III) with organic ligands. The organic ligands function as antennas to absorb blue light. The absorbed energy is subsequently transferred to the Eu(III), resulting in the emission of red light.

While conventional Eu(III) inorganic phosphors and common fluorescent lanthanide complex are typically excited only by UV light below 400nm, Nichia's Fluorescent Lanthanide Complex shows a very sharp red luminescence with high efficiency even when excited by blue light at 450nm.