Advancing crystal growth and purification technology for next-generation radiation detection, infrared photonics, and quantum technologies through our proprietary LTG Czochralski platform.
Proprietary low-gradient growth method for large II-VI semiconductor crystals.
Reported low-defect growth for large-format detector-grade materials.
Independent scintillator performance evaluation with published results.
Project, partnership, and material requests handled through the website form.
Crystals Growing SIA is a Latvian materials company running the full crystal supply chain under one roof: precursor synthesis, ultra-high purification, single-crystal growth on our proprietary LTG Czochralski platform, and precision processing into wafers, substrates, and shaped optical elements.
We focus on II-VI compound semiconductors such as CdTe, CdZnTe, and CdHgTe, a class of materials where only a handful of independent producers worldwide can deliver large, low-defect boules at production cadence. Every batch is grown to the customer's specification, not pulled from a catalogue.
Our reactors adapt through software, not hardware. The same physical platform that grows CdTe today can grow a mixed tungstate tomorrow, self-learning control tunes the thermal profile and pulling rate to each new composition, so we are not rebuilding a furnace every time a project changes.
Crystals Growing SIA engineering team
X-ray detectors · IR lasers (6–12 μm) · Quantum tech · Radiation monitoring
Medical imaging · Security · Infrared photonics · Quantum computing
High purity · Low dislocation · Scalable production · Independently validated
Proprietary LTG method · Self-learning AI software · Adaptable to new compositions
Every crystal we ship is traceable to its elemental feedstock. Running synthesis, growth, and finishing in-house keeps stoichiometry and contamination under one team's control, from the precursor batch to the polished wafer.
Proprietary ultra-high purification of II–VI semiconductor source materials. Stoichiometry control to ppm levels ensures crystal lattice perfection from the start.
LTG Czochralski method with temperature gradients <1°C/cm. AI-controlled multi-zone furnace. Polyhedral growth front, atomically smooth surfaces.
Cutting, lapping, polishing and surface treatment to application-specific specifications. Delivery of wafers, substrates, or custom optical elements.
Six II–VI compound and optical crystal families grown on the LTG Czochralski platform, each tuned for a specific wavelength range or detector performance envelope.
Primary workhorse for room-temperature X-ray and gamma-ray detectors. High atomic number delivers excellent radiation stopping power; our LTG process reaches 70 mm boule diameter.
Detector-grade for medical imaging (SPECT) and nuclear security. Zn concentration tunes the bandgap, optimising sensitivity for the target energy range.
Gold standard for high-performance infrared photodetectors. Essential for thermal imaging, MWIR and LWIR sensing across defense, astronomy, and space.
Dilute magnetic semiconductor for spintronic devices and magneto-optical applications. Growing relevance in quantum information science and spin-based logic.
Wide-bandgap barrier material, lattice-matched to CdTe substrates. Used in heterojunction device architectures for high-efficiency photodetectors and quantum-well stacks.
High-transmittance infrared optical elements for lenses, windows, and beam-splitters in thermal imaging systems operating across the 2–14 μm range.
Medical imaging, nuclear security, industrial NDT
Mid-wave & long-wave infrared laser sources
Thermal sensing, environmental monitoring, defense
Quantum computing, quantum communication networks
We are not a commodity crystal vendor. Every engagement starts by scoping the application in detail (composition, geometry, purity grade, characterisation) and is then run as a dedicated project with agreed deliverables and timelines.
An integrated pipeline. Synthesis, growth, and characterisation all happen under one roof, so we own every variable.
A control stack you cannot buy off the shelf. Two decades of practice, proprietary software, and reactors we designed ourselves.
We supply custom-grown crystals against your specifications, wafers, boules, shaped detector elements, or optical blanks. Quantities from evaluation batches to programme-scale orders.
Can supply nowSmall evaluation lots with full characterisation data, radioluminescence, energy resolution, optical transmittance, and structural analysis.
Starting pointFor applications requiring novel compositions or geometries, we engage as a development partner. Shared IP arrangements available.
Open to partnersWe work with research institutes, universities, and government laboratories. Experience with EU Horizon-funded and bilateral programmes.
Academic & researchOur Low Thermal Gradient (LTG) Czochralski method grows large bulk crystals with polyhedral facets, low dislocation density, and stoichiometry preserved from melt to boule.
Open crucible pulling with high temperature gradients (10–100 °C/cm) creates fundamental defects that limit crystal quality and scalability.
Pulling in a specially designed crucible with multi-zone furnace. Temperature gradients <1 °C/cm. Layer-by-layer crystallographic growth mechanism.
We do not self-assess crystal quality. Independent research institutes characterise our materials and publish the results in peer-reviewed journals.
Large-size mixed zinc tungstate crystals (65 × 50 × 90 mm, 2.3 kg) grown by Crystals Growing SIA were independently characterised by the UT Knoxville Scintillation Materials Research Center.
G. Centners, L. Dimitrocenko, K. Pestovich, L. Stand, C.L. Melcher & M. Zhuravleva · University of Tennessee, Knoxville
Our crystals are under active evaluation at multiple European and US research institutions. Results are being prepared for publication.
Crystals have been supplied to detector developers and imaging system integrators for device qualification. References available under NDA.
Material development and characterisation validated through ERDF-funded project with the Investment and Development Agency of Latvia.
25+ years in manufacturing project management across Israel, Latvia, and Ukraine. Business and operational leadership.
12 years in sales and management in the USA. Currently focused on deep-tech project development in Latvia.
Ph.D. Physics, University of Latvia. Solid-state physics, materials science. 14 years in industrial crystal growth and LTG technology.
M.Sc. Engineering, Riga Technical University. 7 years in industrial crystal growth and LTG technology development.
Associate Professor in Solid State Physics at the Institute of Physics, Faculty of Science and Technology, University of Tartu, Estonia. Specialized in physics of scintillating crystals, with research focus on electronic structure and ultrafast energy relaxation processes in scintillators, including ternary tungstates, molybdates, phosphates, and hexafluorides.
Peer-reviewed research across solid-state physics, materials science, and crystal growth. Actively published and cited in the field.
Built from a research spin-out through the Commercialization Reactor programme into a commercial supplier of II–VI crystals.
Unparalleled experience optimising the low-temperature gradient growth method for demanding II–VI compositions.
Custom AI reactor automation and thermodynamic modelling systems, all developed in-house.
Multi-level crystal production methods moved from laboratory practice to industrial-scale growth.
Synthesis, growth, characterisation, wafering, and QA owned by a single senior team.
We are backed by EU structural funding and are actively seeking strategic investors and industrial partners for the next phase of growth. Request our investor deck to learn more.
Investor materials are shared after a brief introduction.
Crystals Growing SIA implements the European Regional Development Fund (ERDF) project "Technology Transfer of Semiconductor Crystals Growing for Lasers and Medical Scanners" (Project No. 1.2.1.2/16/I/001), in agreement with the Investment and Development Agency of Latvia, with additional backing from EIT RawMaterials and the Commercialization Reactor programme.
Use the website form for crystal specifications, evaluation inquiries, joint development proposals, partnership requests, or company materials.
For company materials, select the materials request option below.
