Description
Product overview
LD-7 is a fluorescent light-conversion additive intended for incorporation into film and coating systems. Its application concept is to convert part of the incident ultraviolet light into red emission. It is a light-conversion material, not a photoinitiator.
Applications
- Agricultural covering-film development in PE, EVA or PVC systems.
- Spectral-management layers for solar films and photovoltaic encapsulation materials.
- Evaluation in light-conversion coatings and optical materials.
- Luminescent marking-material development.
Published reference data
| Property | Value |
|---|---|
| Fluorescence lifetime | 478.14 μs — Published reference value; full test conditions not supplied |
| Fluorescence quantum yield | 76.77 % — Published reference value; full test conditions not supplied |
| Thermal decomposition onset | 285 °C — Method not specified in source |
Reference information is provided for grade screening. Confirm the current technical data sheet and batch certificate of analysis before setting purchase or production specifications.
Formulation and qualification notes
Confirm the excitation and emission spectra, dispersion process, addition level and compatibility with the selected film resin. The source does not provide peak wavelengths, a chemical identity or a fixed dosage. Validate transmission, haze, ageing and any crop or photovoltaic performance benefit in the complete film or device. The fluorescence figures below are published reference values without full test conditions.
Request a quotation or technical information
For LD-7 evaluation, specify the resin, film thickness, processing conditions and desired spectral response. Request the current TDS, SDS and measured absorption/emission spectra before qualification.
For pricing, sample availability and current documentation, use the inquiry form below or email info@longchangchemical.com.