CuMOF-LED · White Hybrid Light-Emitting Diodes based on Cu(I) Complexes-MOFs Hybrid Materials
Horizon 2020 — Marie Skłodowska-Curie Actions
- Duration
- 2020-09-01 → 2022-08-31
- EU contribution
- €172,932
- Participants
- 2
- Scheme
- MSCA-IF
Lines connect the coordinator with its partners.
Results in brief
White Hybrid Light-Emitting Diodes based on Cu(I) Complexes-MOFs Hybrid Materials
White Light-Emitting Diodes (WLEDs) currently consist of polluting, expensive and toxic rare earth-based materials (Inorganic Phosphors, IPs). These materials cannot hold the current world-wide WLED production for more than 15 years. IPs must be hence replaced by non-toxic, cos-effective and sustainable Organic Phosphors (OPs) towards a new generation of hybrid WLEDs. These are nevertheless still too costly/polluting/toxic for a widespread commercialization. They are indeed made by materials such as iridium (150€/g), cadmium, yttrium (4,000€/kg). Moreover, those OP-WLEDs have not met customer requirements, i.e. i) stability, ii) efficiency, iii) quality of the white. Regarding iridium, it has recently achieved interesting performances, but it is considered as a critical raw material by the European Commission. Obvious candidates to replace iridium complexes are copper complexes. Advantages of copper complexes are straightforward synthesis, low cost (7000€/T), and efficiency. However, Cu(I) complexes feature a remarkable lack of stability. In addition, intrinsic white-emitting Cu(I) complexes have not been reported yet.
Data: CORDIS, © European Union
Project objective
Current white light-emitting diodes (WLEDs) are based on inorganic phosphors, such as CdQDs or rare earth elements. Those are toxic and/or scarce and therefore are considered as a critical aspect towards the sustainable development and use of the WLED technology. Hybrid WLEDs (HWLEDs) based on organic phosphors (OPs), such as coordination complexes, conjugated polymers, laser dyes, etc., are considered as an alternative if the stability and efficiency requirements are met. In this context, OPs based on emitting Ir(III) complexes have recently reached the desired device performance, but they are also considered as scarce material. CuMOF-LED proposes the development of new sustainable, non-toxic, and highly emissive OPs based on Cu(I) complexes-metal organic framework hybrid materials for next generation HWLEDs. Here, highly emissive blueish green Cu(I) complexes will be inserted in highly emissive yellowish orange Zn(II) or Zr(IV) MOFs, leading to a stable host-guest system prepared by either physical diffusion or chemical bonding. Both the host and the guest will be designed to reach high efficiencies and will be in synergy to stabilize each other. These hybrid OPs will be used for the implementation of highly performing HWLEDs, targeting features such as CIE coordinates close to 0.31; 0.31, CRI >90, efficiency >100 lm/W, and color efficiency over 100-500h under mid-power excitations. This multidisciplinary proposal covers a wide range of different fields of science, i.e. organic/coordination chemistry, material science, photophysics, coating fabrication, photo and thermal stability studies, and fabrication/analysis of lighting devices (HWLEDs). CuMOF-LED will open-up new horizons on the field of optoelectronics, with the implementation of sustainable OPs in HLEDs.
Original text from CORDIS.
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Data: CORDIS, © European Union