(O)LEDs: solutions innovantes pour un éclairage de qualité

Transcription

1 (O)LEDs: solutions innovantes pour un éclairage de qualité (O)LEDs: solutions innovantes pour un éclairage de qualité Rolando Ferrini Electrosuisse

2 Table des matières CSEM Partenaire de recherche pour le développement de solutions d éclairage innovantes (O)LEDs en Suisse Swissphotonics & «Swiss National Laboratory for SSL» LEDs et OLEDs Nouveaux composants pour une illumination de haute efficacité Qualité d éclairage Sources d illumination à base de LEDs et OLEDs Défis technologiques et perspectives Eclairage de haute qualité avec modules LEDs et OLEDs La voie hybride Le projet européen LASSIE-FP7 ( Conclusions 2 (O)LEDs: solutions innovantes pour un éclairage de qualité Rolando Ferrini Electrosuisse

3 Centre Suisse d Electronique et Microtechnique (CSEM) CSEM at a glance Our mission Development and transfer of microtechnologies to the industrial sector in Switzerland, as a priority in order to reinforce its competitive advantage Cooperation agreements with established companies Creation of start-ups Copyright 2015 CSEM (O)LEDs: solutions innovantes pour un éclairage de qualité Rolando Ferrini Page 3

4 Centre Suisse d Electronique et Microtechnique (CSEM) CSEM s positioning Development and integration of technologies Production and commercialization Research Transfer to industry EMPA, PSI European Allies EPFL, ETHZ Universities Industrial partners Spin-off, Start-ups Copyright 2015 CSEM (O)LEDs: solutions innovantes pour un éclairage de qualité Rolando Ferrini Page 4

6 Swissphotonics Swiss National Laboratory for Solid State Lighting (SSSL) Swissphotonics is the Swiss national thematic network (NTN) for photonics, supported by the Swiss Innovation Promotion Agency (CTI). Mission: advocacy for photonics, national and international networking (e.g. Photonics 21, EPIC), workshops, partner and fund matching. Swiss National Laboratory for Solid State Lighting (SSSL) serves as a one-stop entrance point for requests of companies active in SSL. Mission: o Consulting and contract R&D services with focus on Swiss SMEs (but not only): Feasibility and case studies Supply of test components, characterization and metrology Access to standard know-how and equipment in SSL o Building a national SSL cluster o Seminal talks and Workshops Copyright 2015 CSEM (O)LEDs: solutions innovantes pour un éclairage de qualité Rolando Ferrini Page 6

13 From LEDs to OLEDs Displays: OLEDs are already a product Mobile phones & Portable electronics TV & Screens Watches & Wearables Copyright 2015 CSEM (O)LEDs: solutions innovantes pour un éclairage de qualité Rolando Ferrini Page 13

14 From LEDs to OLEDs Lighting: OLEDs are coming Special lighting Decorative lighting General lighting Copyright 2015 CSEM (O)LEDs: solutions innovantes pour un éclairage de qualité Rolando Ferrini Page 14

17 Lighting quality A reflexion on solid-state lighting (SSL) and its quality Black body Philips NR63 Hybrid OLED CCT = 3900K CCT = 3900K / CRI < 70 CCT = 3600K M. Schaer, P. Cotte, L.Zuppiroli (Lumières du Futur, PPUR, 2011) We need a new definition and measure of lighting quality beyond CRI based on the whole source spectral characteristics of SSL sources Copyright 2015 CSEM (O)LEDs: solutions innovantes pour un éclairage de qualité Rolando Ferrini Page 17

18 Lighting quality Commercial LED & OLED lighting modules Philips Fortimo Philips Lumiblade LG Chem Copyright 2015 CSEM (O)LEDs: solutions innovantes pour un éclairage de qualité Rolando Ferrini Page 18

19 Lighting quality Commercial LED & OLED lighting modules LEDs OLEDs Philips LG Chem LG Chem Highest lumen output 1 Philips Largest Area Highest Efficacy Best commercial module Fortimo LED DLM W/830 Gen5 Lumiblade Brite FL300 N6SD30 N8SA30 Emissive area (mm 2 ) x x x100 Thickness (mm) Luminous flux (lm) Lumen Efficacy (lm/w) > CCT (K) CRI >80 >80 >90 >80 Lifetime LT70 10 ( hrs) , Price / unit 69 EUR EUR 60 EUR 7 Unknown 82 EUR 3 1 Other products exist with lower lm 2 Based on the technical drawings 3 Module 4 System 5 ebay (source) 1 Including thermal backplate, housing and wiring 2 At 340mA and 19V 3 At 300 lumen K planned 5 At 300 lumen 6 At 125 lumen 7 For orders above 40 OLEDs 1 Bare OLED 2 At 1700mA and 8.5V 3 At cd/m2 4 Using LG proprietary Face Seal technology Luminous flux (lm/eur): LEDs >> OLEDs more than one order of magnitude 1 With housing and wiring 2 Initial luminance not specified 3 Source Copyright 2015 CSEM (O)LEDs: solutions innovantes pour un éclairage de qualité Rolando Ferrini Page 19

20 Lighting quality SSL tomorrow : OLEDs will complement LED lighting IHS : OLED lighting market 26 Mio. $ in 2020 IDTechEx : OLED lighting market 200 Mio. $ in 2019 / 1.9 Bio. $ in 2025 UBI Research : OLED lighting market 4.7 Bio. $ in 2020 Source: OLED-Info OLED lighting will come but when and how? Copyright 2015 CSEM (O)LEDs: solutions innovantes pour un éclairage de qualité Rolando Ferrini Page 20

21 Lighting quality SSL today : how to improve the quality of LED lighting? CTI Project «New Color-changing films for lighting applications» (nr EPRP-IW) Patents o EP & US 2010/ o US 13/ & PCT/IB2012/ Copyright 2015 CSEM (O)LEDs: solutions innovantes pour un éclairage de qualité Rolando Ferrini Page 21

23 LASSIE-FP7 Large Area Solid State Intelligent Efficient luminaires Color sensor Lumogen Fluorescent Dyes Light management Heat management Property of the LASSIE-FP7 Consortium Copyright 2015 CSEM (O)LEDs: solutions innovantes pour un éclairage de qualité Rolando Ferrini Page 23

24 LASSIE-FP7 LED-based polymer foils Opportunities LED-based polymer foils Flexible lighting modules Printing and assembly with R2R processes Improved performance: o Optimized electronics layout o Traditional electronic SMD components o Bare LEDs with no on-chip optics Challenges Heat management o Poor thermal conductivity of the polymer foils Property of the LASSIE-FP7 Consortium Copyright 2015 CSEM (O)LEDs: solutions innovantes pour un éclairage de qualité Rolando Ferrini Page 24

25 LASSIE-FP7 Heat management: Simulation & Test Simulation Thermal model (Comsol / FEM) Test structures Processing The model was set-up to represent the test structures Test structures: circuits with vias & slugs Property of the LASSIE-FP7 Consortium Copyright 2015 CSEM (O)LEDs: solutions innovantes pour un éclairage de qualité Rolando Ferrini Page 25

26 LASSIE-FP7 Heat management: Measurements Thermal transient tests Modelling Sensitive to the thermal conductivity of the PET foil Measurement Forward voltage LED temperature Vias work well but requires further development Slugs provide the best thermal performance Property of the LASSIE-FP7 Consortium Copyright 2015 CSEM (O)LEDs: solutions innovantes pour un éclairage de qualité Rolando Ferrini Page 26

27 LASSIE-FP7 Light Management: Concept Color Changing Films (CCFs) Flexible & R2R compatible Organic fluorescent materials Broad spectrum High color rendering Commercial PC foil (0.5mm) High transmittance Low optical absorption Compact blue LEDs λ max : 470nm / FWHM: 20nm Angular aperture: ±60 o Parameters optimized for max. efficiency o < 5mm total module thickness o Compatible with R2R integration Property of the LASSIE-FP7 Consortium High reflectance substrate Good adhesion / LED bonding Highly resistant to scratches Patent pending Copyright 2015 CSEM (O)LEDs: solutions innovantes pour un éclairage de qualité Rolando Ferrini Page 27

28 LASSIE-FP7 Light Management: In-coupling Grating parameters optimized for Optimized grating design o o Maximum efficiency Compatibility with manufacturability limits 50% in-coupling efficiency 25% transmittance Property of the LASSIE-FP7 Consortium 25% reflectance (recycled by substrate) Patent pending Copyright 2015 CSEM (O)LEDs: solutions innovantes pour un éclairage de qualité Rolando Ferrini Page 28

29 LASSIE-FP7 Light Management: Out-coupling Refractive microstructures Geometric optics (ray tracing) Diffractive nanostructures Wave optics (RCWA) RCWA ZEMAX RCWA-calc. in-coupled light ZEMAX source Profiting from ZEMAX built-in features: o CAD design (no design limitations) o Integrated number of sensors Property of the LASSIE-FP7 Consortium RCWA + Ray tracing MATLAB code: RCWA + Ray tracing modules Multiples in- & out-coupling gratings Light recycling by the substrate Patent pending Copyright 2015 CSEM (O)LEDs: solutions innovantes pour un éclairage de qualité Rolando Ferrini Page 29

30 LASSIE-FP7 Light Out-coupling: 1D microstructures Total optical power: 1W WAVEGUIDE ONLY ENGINEERED 1D OUT-COUPLING MICROSTRUCTURES Irradiance (W/cm 2 ) 37 % efficiency 68 % efficiency 76% efficiency Total power 0.09W Total power Total power Total power 0.37W 0.68W 0.76W No Light recycling Specular Light recycling Diffused Light recycling Total power 0.45W Total power Total power Total power 0.043W 0.068W 0.053W Property of the LASSIE-FP7 Consortium Patent pending Copyright 2015 CSEM (O)LEDs: solutions innovantes pour un éclairage de qualité Rolando Ferrini Page 30

31 LASSIE-FP7 Test modules: Preliminary results (no optimization) With no optimization and specific light management Power W Lum. Flux lm Rad. Power W Efficacy lm/w CCT K CRIa CRI9 LED foil LED foil + CCF Property of the LASSIE-FP7 Consortium Patent pending Copyright 2015 CSEM (O)LEDs: solutions innovantes pour un éclairage de qualité Rolando Ferrini Page 31

32 LASSIE-FP7 Intelligence: Colour feed-back Intelligent luminaires require colour feed-back Accurate colour-sensing feedback Cost-effective colour multispectral sensors Targeted solutions 16 CMOS photodiodes with different filters Up to 16 spectral channels Property of the LASSIE-FP7 Consortium Courtesy of FhG IIS Copyright 2015 CSEM (O)LEDs: solutions innovantes pour un éclairage de qualité Rolando Ferrini Page 32

33 LASSIE-FP7 Multispectral CMOS sensor for colour feed-back Spectral filters CMOS integration Conventional CMOS photodiode Metallic nanostructures Hole arrays (period nm) Enhanced transmission due to plasmon resonances Filter wavelength is tailored by varying the geometry Property of the LASSIE-FP7 Consortium CMOS photodiode with integrated metallic nanostructures as on-chip optical filters Copyright 2015 CSEM (O)LEDs: solutions innovantes pour un éclairage de qualité Rolando Ferrini Page 33

34 LASSIE-FP7 Colour filters: Metallic nanostructures Simulation Fabrication Blue filter (460 nm) Two nanostructured metal layers Peak wavelength = 460 nm Peak transmission = 55 % FWHM = 55 nm Filter set for the the multispectral sensor (example) Multispectral sensor 5 filters Range = nm Property of the LASSIE-FP7 Consortium Copyright 2015 CSEM (O)LEDs: solutions innovantes pour un éclairage de qualité Rolando Ferrini Page 34

35 LASSIE-FP7 Environmental & Cost assessment Environmental & Cost assessment at early stage of design Advantages : reduce the environmental load / flexibility Limitations: new materials / processes / products, evolving development Fulfilment of environmental specifications To identify environmental requirements or limitations and identify sustainability priorities o o o Technical requirements: legal (e.g. directives on ecodesign) & best practices (e.g. ecolabelling) Recyclability and recovery goals (valorisation, reuse & recycling targets) Potentially hazardous substances (e.g. REACH regulation / RoHS directives) Environmental Life Cycle assessment (LCA) To analyse the contribution to different environmental impacts of processes, materials and energy resources used during the life cycle of the lighting module. Property of the LASSIE-FP7 Consortium Copyright 2015 CSEM (O)LEDs: solutions innovantes pour un éclairage de qualité Rolando Ferrini Page 35

37 Thank you for your attention!