Manufacturer of phosphors and inorganic specialty materials for LED, security marking and agri-photonics
Litec-LLL GmbH
Greifswald (Siemensallee 1)New on Amplifa
Phosphors and inorganic specialty materials from Greifswald
Litec-LLL GmbH develops and produces phosphors and inorganic specialty materials at its Greifswald site. The portfolio comprises the product families isiphor (LED phosphors for spectral conversion from blue to deep red), isishield (luminescent taggants for security marking, anti-counterfeiting and traceability) and isigrow (rare-earth-free, luminescent inorganic pigments for greenhouse films and agri-PV modules). The entire value chain takes place under one roof: solid-state and wet-chemical synthesis, doping, ALD coating of powders, milling and classification, filling, labeling and testing. Contract manufacturing covers dedicated batches and OEM supply from a few kilograms to single-digit tonnes per year (approx. 10 t/a synthesis and 3 t/a ALD capacity). The company also takes over production of discontinued specialties as a second source or sole supplier. Customers come from the LED and specialty chemicals industry, security technology as well as horticulture and agri-PV in Europe, North America and Asia-Pacific. Since the management buy-out in 2020, the company has been owner-managed with around 20 employees.
- Site
- Greifswald
- Processes
- Solid-state chemistry synthesis, Wet-chemical synthesis (wet-chemical routes), Doping, Milling, Classification / particle engineering, ALD coating (Atomic Layer Deposition) on powders, Wet-chemical functional coating / surface stabilization (surface engineering), Contract synthesis / contract manufacturing to specification
- Materials
- LED phosphors (isiphor, down-conversion, blue to deep red), Luminescent taggants / security marking materials (isishield), Inorganic luminescent pigments, rare-earth-free (isigrow), Inorganic specialty materials (phosphors, pigments and related inorganic specialties), Solid-state chemistry synthesis, Wet-chemical synthesis, Doping, ALD coating (Atomic Layer Deposition) on powders
- Certificates
- ISO 9001, TÜV-certified 100 % renewable energy
- Industries
- LED and lighting industry, Specialty chemicals, Security technology / anti-counterfeiting, Horticulture / horticulture, Agri-photovoltaics
- 01
Material development according to requirement profile (under NDA/MTA/JDA)
- 02
Synthesis (solid-state chemistry, wet-chemical processes, doping)
- 03
Particle engineering (milling, classification)
- 04
Coating (ALD or wet-chemical)
- 05
Filling, labeling, batch documentation
- 06
Optical characterization, particle and stability testing
- 07
Delivery / OEM supply
Processes and material platform
Solid-state chemistry synthesis
High-temperature synthesis of phosphors and inorganic specialties in furnaces with hydrogen and controlled atmospheres.
Wet-chemical synthesis
Wet-chemical processes for the production of phosphors and inorganic specialty materials.
Doping
Doping of phosphor systems to adjust emission properties.
ALD coating (Atomic Layer Deposition) on powders
Deposition of dense, ultra-thin barrier layers on individual particles, up to approx. 3 t/a capacity.
Wet-chemical functional coating
Surface stabilization and functional coating of powders to customer specification.
Milling and classification
Particle engineering for defined particle size distributions and demanding dimensions.
LED phosphors (down-conversion)
Phosphors for spectral conversion in LEDs, emission colors from blue to deep red.
Luminescent taggants (security marking)
Marking materials for anti-counterfeiting, traceability and brand protection.
Rare-earth-free luminescent pigments (agri-photonics)
Absorption of UV (280–400 nm) and green light (500–550 nm) with re-emission in blue (450–490 nm) and deep red (660–680 nm) for greenhouse films and agri-PV.
Location
Greifswald, Siemensallee 1
DEHeadquarters with development/R&D, synthesis, ALD coating, filling/labeling, testing/QA, logistics and sales
- Lot size
- few kg to single-digit t/a
- Materials
- LED phosphors, luminescent taggants, rare-earth-free pigments, inorganic specialties
- Synthesis plants (approx. 10 t/a)
- High-temperature furnaces with hydrogen and controlled atmospheres
- ALD coating pilot plant (3 t/a, since 2018)
- Filling and labeling line
Product families
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Solid-state chemistry synthesisPlastics | – | – | approx. 10 t/a synthesis capacity | – | Phosphors, Pigments, inorganic specialties, isiphor LED phosphors, isishield luminescent taggants, isigrow agri-photonics materials |
| Wet-chemical synthesis (wet-chemical routes)Plastics | – | – | – | – | Phosphors, inorganic specialty materials |
| DopingPlastics | – | – | – | – | Phosphors |
| MillingPlastics | – | – | – | – | Phosphors, inorganic specialty materials |
| Classification / particle engineeringPlastics | – | – | – | – | Phosphors, inorganic specialty materials |
| ALD coating (Atomic Layer Deposition) on powdersSurface | – | – | approx. 3 t/a coating capacity | – | Powder materials, Phosphors, inorganic specialty materials |
| Wet-chemical functional coating / surface stabilization (surface engineering)Surface | – | – | – | – | Powder materials, Phosphors |
| Contract synthesis / contract manufacturing to specificationPlastics | – | – | a few kilograms – single-digit tonnes per year | – | Phosphors / phosphors, inorganic specialty materials |
| Production takeover (production takeover, second source)Plastics | – | – | – | – | discontinued specialties |
| Custom material development (custom development, dimensions from requirement profile)Engineering | – | – | – | – | Phosphors, Pigments, inorganic specialties |
| Optical characterization (emission/excitation spectra, color coordinates, efficiency)Testing | – | – | – | – | Phosphors, luminescent materials |
| Particle size analysis (particle size distribution, D50)Testing | – | – | – | – | Phosphors |
| Thermogravimetric analysis & stability testing including LED reliability assessmentTesting | – | – | – | – | Phosphors, inorganic specialty materials |
| Filling and labeling, batch documentation against specificationAssembly | – | – | a few kilograms – industrial series | – | Phosphors, inorganic specialty materials |
3 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| ALD coating pilot plant (Atomic Layer Deposition, for powder materials) | – | 1 | 3 t/a coating capacity | 2018 | Greifswald, Siemensallee 1 |
| High-temperature furnaces with hydrogen and controlled atmospheres | – | – | – | – | Greifswald, Siemensallee 1 |
| Synthesis plants (approx. 10 t/a capacity) | – | – | approx. 10 t/a synthesis capacity | – | Greifswald, Siemensallee 1 |
Quality and testing
Every batch is tested against the agreed parameters before delivery: optical characterization (emission/excitation spectra, color coordinates, efficiency), particle size analysis (D50) as well as thermogravimetric analysis and stability testing including LED reliability assessment. ISO 9001-certified quality management with annual audits since approx. 2005; successful customer audits by leading LED manufacturers.
| Evidence | Greifswald |
|---|---|
| ISO 9001 | |
| TÜV-certified 100 % renewable energy |
History
- 1994
Spin-off of Litec GbR from the University of Greifswald by Dr. Walter Tews and Dr. Gundula Roth
- 2002
Founded Litec-LLL GmbH with a focus on LED phosphors
- 2008
Full acquisition by Merck KGaA, Darmstadt; Dr. Stefan Tews becomes Managing Director
- 2011
Relocation within the Greifswald technology park to Siemensallee 1
- 2015
Capacity expansion of phosphor production to approx. 10 t/a
- 2018
Commissioning of the ALD coating pilot plant with 3 t/a
- 2020
Management buy-out; return to independence, owner-managed
- 2021
Market launch of the isishield brand
- 2025
TÜV-certified supply with 100 % renewable energy; market launch of the isigrow brand