Single Crystal CdSe and II-VI Substrates for Epitaxial Growth
UniversityWafer supplies single crystal Cadmium Selenide (CdSe) substrates and other II-VI semiconductor substrates for epitaxial growth, thin-film deposition, optoelectronics, photonics, and advanced materials research. Researchers frequently request high-resistivity CdSe wafers for molecular beam epitaxy (MBE), chemical vapor deposition (CVD), and other crystal growth processes.
A university researcher requested quotations for the following CdSe substrates:
- CdSe, Ø12.7 × 3.2 mm, <0001>, two sides polished (60/40), high resistivity (≥1011 Ω·cm)
- CdSe, 5 × 5 × 0.5 mm, (0001), all sides polished (60/40), high resistivity (≥1011 Ω·cm)
- CdSe, 10 × 10 × 0.5 mm, (0001), two sides polished (60/40), high resistivity (≥1011 Ω·cm)
These substrates are commonly used for crystal growth, photodetector development, quantum dot research, spectroscopy, infrared optics, semiconductor characterization, and optoelectronic device fabrication.
Reference #127670 for specifications and pricing.
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Cadmium Selenide (CdSe) Substrates
Learn more about CdSe substrates, including available crystal orientations, polishing options, electrical properties, and applications in optoelectronics, photonics, quantum materials, and semiconductor research.
Cadmium Selenide (CdSe) Substrates and Wafers
Cadmium Selenide (CdSe) substrates are II-VI semiconductor materials used in optoelectronics, photonics, photodetectors, quantum dot research, solar cell studies, and thin-film semiconductor development. CdSe is valued for its direct bandgap, visible-light response, and strong optical absorption, making it useful for researchers developing light-sensitive devices and advanced semiconductor structures.
UniversityWafer, Inc. supplies CdSe wafers and substrates for universities, laboratories, and commercial R&D. Available specifications may include custom sizes, orientation, thickness, resistivity, surface polish, and single-side polished (SSP) or double-side polished (DSP) finishes.
CdSe Substrate Specifications
Cadmium Selenide substrates can be supplied in small research sizes for optical testing, spectroscopy, detector development, and calibration work. Typical requested specifications may include:
- Material: Cadmium Selenide (CdSe)
- Orientation: random or custom orientation upon request
- Size: small pieces, squares, rectangles, or custom dimensions
- Thickness: custom thickness options available
- Polish: SSP or DSP
- Surface quality: optical or semiconductor-grade polish when available
- Applications: photodetectors, imaging, spectroscopy, thin-film deposition, and device testing
What Are Cadmium Selenide Substrates Used For?
CdSe is used in research applications where optical absorption, emission, photoconductivity, or semiconductor bandgap behavior is important. Because CdSe interacts strongly with visible light, it is often studied for optoelectronic devices and photonic materials.
- Photodetectors: CdSe materials are used in light-sensitive devices for imaging, sensing, spectroscopy, and optical detection research.
- Quantum dots: CdSe quantum dots are widely studied because their optical properties can be tuned by particle size, making them useful for display, imaging, sensing, and fluorescence research.
- Solar cells: CdSe can be studied as a light-absorbing semiconductor material for thin-film photovoltaic devices and solar energy conversion.
- LEDs and lasers: CdSe-based materials are researched for light-emitting devices because of their direct bandgap and visible emission properties.
- Thin-film deposition: CdSe may be deposited or integrated with other substrates such as glass, silicon, and sapphire for device fabrication.
- Camera and sensor calibration: CdSe substrates may be requested for optical calibration experiments where a specific absorption edge or visible-light response is required.
CdSe for Thin-Film Solar Cell Research
Cadmium Selenide is studied as part of thin-film photovoltaic and chalcogenide semiconductor research. In experimental solar cell structures, CdSe may be used as an absorber layer or as part of a multilayer stack designed to improve light absorption and charge generation.
A typical research structure may include a glass substrate, transparent conductive oxide layer, CdSe absorber layer, buffer layer, and metal back contact. These structures allow researchers to study electron-hole generation, optical absorption, and charge transport in thin-film devices.
CdSe Quantum Dot and Photonics Research
CdSe quantum dots are important in nanoscale semiconductor research because their emission wavelength can change depending on particle size. This tunable optical behavior makes CdSe useful for studying displays, fluorescent markers, bioimaging, optical sensors, and photonic materials.
Researchers may use CdSe substrates, crystals, or thin films to evaluate optical response, absorption edge, photoluminescence, and compatibility with other semiconductor materials.