News Details
Study on cadmium quantum dot RoHS exemption by German Institute
Under the EU Directive on the Restriction of Hazardous Substances (RoHS) in Electrical and Electronic Equipment (EEE), Germany’s Öko-Institut has initiated an evaluation on exemption requests for cadmium quantum dots in lighting and display applications.
On 17 October 2022 the study will be completed. Due to the short duration, stakeholders with information are invited to contact the institute directly and stakeholder consultation will not be held. This was stated in note on 7 September 2022.
Technical and scientific support to the European Commission will be provided by the study. The study is based on an assessment of exemptions published in January 2021.
Exemption Overview-
|
Exemption Request No. |
Exemption requests |
Recommendations |
|
Request 1018-1 |
“Cadmium (< 1000 ppm) in luminescent material for on-chip application on LED semiconductor chips for use in lighting applications of at least CRI 80” requested to be valid for 5 years
|
“Cadmium in downshifting semiconductor quantum dots LED semiconductor chips for use in display and projection applications (< 5 mg Cd per mm2 of light emitting LED chip surface)” |
|
Annex III, Ex. 39a |
“Cadmium in downshifting semiconductor nanocrystal quantum dots directly deposited on LED chips for use in display and projection applications (< 5 mg Cd per mm2 of light emitting LED chip surface)” requested to be valid for 5 years |
“Directly deposited on LED semiconductor chips for use in lighting applications of at least CRI 90 (< 1000 ppm in the luminescent material) provided that applications comply with entry 72 of Annex XVII of Regulation 1907/2006.” |
|
Annex III, Ex. 39a |
“Cadmium selenide in downshifting cadmium-based semiconductor nanocrystal quantum dots for use in display lighting applications (< 0.1 mg per mm2 of display screen area)” requested to be valid until 31 October 2021 |
Denied |
According to the German assessment body, the decision for these exemption requests is still pending and a review on the current state of the scientific and technical progress will be given by the Öko-Institute.
Because of carcinogenic, and suspected mutagenic and reprotoxic properties, cadmium is on the REACH candidate list of Substances of Very High Concern (SVHC). An exemption on cadmium is opposed by the NGO Chemical Secretariat (ChemSec). Cadmium-free technologies are widely available and major manufacturers such as Samsung, LG, Apple, and Sony have already adopted a no-cadmium policy says ChemSec’s policy adviser.
We acknowledge that the above information has been compiled from Chemical Watch.
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