CdTe

Technical Specifications

Custom specifications available upon request

Product Features

Fuzhou Jingzhi Optoelectronics Technology Co., Ltd. provides high-performance cadmium telluride (CdTe) crystals for various optoelectronic devices. The products feature high carrier mobility, good chemical stability, and excellent photoelectric conversion efficiency. Customizable crystal size, orientation, and surface treatment are available to meet diverse application requirements. Jingzhi Optoelectronics strictly controls crystal quality to ensure reliable product performance.

Basic Characteristics

Property	Value	Remarks
Chemical Formula	CdTe	/
Crystal Structure	Cubic system	/
Lattice Parameter	a = 6.48 Å	/
Refractive Index	n ≈ 2.7 (@10.6 μm)	Customizable measurement wavelength
Mohs Hardness	2.5 Mohs	/
Thermal Conductivity	≈ 6.3 W/m·K	Room temperature
Melting Point	1092 °C	/
Density	5.85 g/cm³	/
Thermal Expansion Coefficient	≈ 5.9 × 10⁻⁶/°C	Room temperature
Absorption Bandwidth	Bandgap 1.44 eV (λ ≈ 860 nm)	Absorption edge in infrared

CdTe Crystal Specification Parameters

Item	Specific Parameter
Large SizeDiameter	50 mm or customized
Dimensional ToleranceDiameter tolerance	±0.1 mm, customizable Thickness tolerance: ±0.05 mm, customizable
Surface Finish	20/10 (Standard: MIL-PRF-13830B)
Flatness	≤ λ/8 @ 633 nm
Parallelism	30″
Perpendicularity	≤ 20′
Chamfer	≤ 0.3 mm × 45°
Edge Chipping	≤ 0.15 mm
Coating	Custom coating service available
Shelf Life	One year (under normal use)

Application Fields

1. Solar Cells

High‑efficiency thin‑film solar cells: CdTe solar cells offer high conversion efficiency and low cost advantages, and are widely used in ground‑mounted power stations and distributed PV systems.

2. Infrared Optics & Detectors

Infrared windows and lenses: CdTe has high transmittance in the long‑wave infrared region, used in thermal imaging systems and infrared optical components.

Photodetectors: Suitable for infrared detection, radiation measurement, and spectral analysis, with fast response speed and high sensitivity.

3. Medical Imaging.

X‑ray and gamma‑ray detectors: CdTe’s high atomic number and excellent charge collection performance make it widely applicable in medical imaging, nuclear medicine, and security inspection.

CT and digital radiography: As detector material, improves image resolution and signal‑to‑noise ratio.

4. Scientific Research & Industrial Inspection

Semiconductor device research: Used for experimental development of novel optoelectronic materials and devices.

Industrial thickness measurement and nondestructive testing: As core material for sensors, suitable for thin‑film measurement and defect identification.