Description

Gadolinium Oxide Sulfide (Gd2O2S), Terbium-Doped is a high-performance inorganic phosphor material, where terbium ions (Tb³⁺) are incorporated into the gadolinium oxysulfide host lattice as an activator. This doping is critical for its exceptional luminescent properties, enabling efficient conversion of X-ray or electron energy into visible green light. It is an essential advanced material for manufacturers in the medical imaging, security screening, and high-energy physics sectors who require reliable, high-resolution scintillation performance.

Application

• Medical X-ray Imaging: As the core scintillator material in digital radiography detectors (DR) and computed radiography (CR) imaging plates for superior image clarity and dose efficiency.
• Security & Industrial Inspection: Used in baggage scanners, cargo inspection systems, and non-destructive testing (NDT) equipment for detecting concealed objects or material flaws.
• High-Energy Physics & Research: Employed in radiation detection, particle physics experiments, and neutron imaging due to its high density and effective stopping power.
• Electron Microscopy: Serves as a phosphor in the screens of scanning electron microscopes (SEM) and other electron-optical devices for signal conversion.
• Specialty Displays & Lighting: Potential use in specialized cathode-ray tubes (CRTs) and other display technologies requiring high-brightness green emission.

Basic Information

Item	Detail
Product Name	Gadolinium Oxide Sulfide (Gd2O2S), Terbium-Doped
CAS No.	68609-43-8
Molecular Formula	Gd2O2S:Tb (commonly represented)
Molecular Weight	~402.50 g/mol (for Gd2O2S base)
Synonyms	Gadolinium Oxysulfide:Tb; Gadolinium(III) Oxysulfide doped with Terbium; GOS:Tb; Gd2O2S:Tb; Terbium activated Gadolinium Oxysulfide; Lanthanide Oxysulfide Phosphor; Scintillation Grade Gadolinium Oxysulfide; Green-emitting X-ray Phosphor
EINECS	Contact for details

Quality Control

Our Gd2O2S:Tb is produced under stringent conditions to meet the exacting requirements of scintillator and phosphor applications. Each batch is characterized for critical parameters including phase purity (XRD), particle size distribution, photoluminescence/excitation spectra, and afterglow levels. A Certificate of Analysis (COA) detailing these specifications is provided with every shipment to ensure traceability and performance consistency for your manufacturing process.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); containers must be kept sealed to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Fine white to pale yellow powder
Crystal Phase (XRD)	Hexagonal (P-3m1)
Terbium (Tb³⁺) Doping Level	Typically 0.1 - 1.0 mol% (Customizable)
Primary Emission Wavelength	~545 nm (Green)
Median Particle Size (D50)	3 - 10 µm (Customizable)
Purity (Gd2O2S base)	> 99.9%
Trace Rare Earth Impurities	< 100 ppm total
Afterglow (After 3 ms)	< 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.