Small-molecule OPV: From the Lab to Roll-to-Roll Production. Company Presentation 1

Transcription

1 Small-molecule OPV: From the Lab to Roll-to-Roll Production Company Presentation 1

2 Organic solar cells + - Metal contact 100nm 1g/m² Organic semiconductor layers 250nm transparent contact (TCO) 100nm Substrate (e.g. PET) µm Organic solar cells and OLED: Reverse processes, but similar materials, layer structures and production processes 2

3 Our 4 Core Competencies Unique in-house feedback loop for continuous improvement Materials development Chemistry lab in Ulm with 15 chemists specialized in organic materials Stack architecture Physics lab in Dresden with 16 physicists specialized in organic electronics I II IV III OPV business development R2R production Experienced management and solar specialists for market entry First production site in Dresden with 23 engineers and operators 3

4 Our 4 Core Competencies Unique in-house feedback loop for continuous improvement Materials development Chemistry lab in Ulm with 15 chemists specialized in organic materials Stack architecture Physics lab in Dresden with 16 physicists specialized in organic electronics I II IV III OPV business development R2R production Experienced management and solar specialists for market entry First production site in Dresden with 23 engineers and operators 4

5 Two Approaches to Organic Solar Cells Polymers (plastics): Oligomers / Small molecules: = Heliatek approach N N N N N Zn N N N 5

6 Chemistry: Materials Development Powerful absobers with superior properties Heliatek develops and synthesizes Smolecules at its own chemistry lab: Oligomers Fullerene C60 Organic absorber Accelerated cycle of learning Faster efficiency improvements Patented Smolecules Defendable barriers 6

7 Our 4 Core Competencies Unique in-house feedback loop for continuous improvement Materials development Chemistry lab in Ulm with 15 chemists specialized in organic materials Stack architecture Physics lab in Dresden with 16 physicists specialized in organic electronics I II IV III OPV business development R2R production Experienced management and solar specialists for market entry First production site in Dresden with 23 engineers and operators 7

8 Physics: p-i-n Tandem Devices Patented, highly efficient tandem cells Heliatek designs and optically engineers p-i-n tandem cells: Plastic substrate TCO front electrode p Organic vacuum deposited layers: Total thickness 250 nm Organic absorber 1 n p d + Organic absorber Optical Engineering: Absorber layers are placed in the respective interference maxima n Metal back electrode 8

9 Superior Harvesting Factor Superior low light characteristics Positive Temperature coefficient. 9

10 Certified Efficiency 12.0% on >1cm² Measured by SGS at standard test conditions Voc= 2.67V FF = 73.5% jsc = 6.11mA/cm² 10

11 Certified Efficiency 12.0% on >1cm² Voc= 2.67V FF = 73.5% jsc = 6.11mA/cm² Triple junction cell with two different absorbers, (the more widegap: University Ulm, P. Bäuerle) both absorbers ADA-type oligomers covered by Heliatek IP no infrared-absorber involved yet 11

12 What do we need for tandem cell efficiencies of 13%? V(lambda) HDR014 HDI12 12

13 First efficient small molecule NIR absorber Voc= 0.69V FF = 66% jsc = 10.7mA/cm² 13

14 Our 4 Core Competencies Unique in-house feedback loop for continuous improvement Materials development Chemistry lab in Ulm with 15 chemists specialized in organic materials Stack architecture Physics lab in Dresden with 16 physicists specialized in organic electronics I II IV III OPV business development R2R production Experienced management and solar specialists for market entry First production site in Dresden with 23 engineers and operators 14

15 Unique R2R Production Equipment Precise and homogenous production process for little upscaling losses Roll-to-roll process Vapor deposition Laser structuring Continuous process Linear sources Precise process 500 m long rolls 0.30 m wide web Homogenous deposition Multi-layer stack Ultra narrow scribes Minimum area losses Low temperature (120 C) 15

16 P3 cut by ps-pulsed laser (R2R in vacuum line!) cuts the metal top contact, but spares the organic layers challenges: do not create shorts at the edges microscopy positioning by pattern recognition (inline camera system) scale: 100µm P1 P2 P3 P1 P2 P3 P1 P2 P3 16

17 current density (ma/cm²) Single junction module from R2R-production 0.3 STC: 25 C / 1000 W/m² Voc= 13.7V (0.86V/cell) FF = 33% jsc = 0.22mA/cm² voltage V (V) V oc and j sc of lab devices reproduced good blocking behaviour (little shunt problems) for total thickness ~100nm FF heavily influenced by ITO series resistance 17

18 current (ma) 7% cell efficiency in Role-to-Role manufacturing general date: :43 aperture/cell area: 1176 cm²/ cm² number of cells: 24 aggregated data V OC I SC V ma FF 65.6% DUT eff. 6.12% V mpp V I mpp ma P mpp 7197 mw Cell eff. 6.97% 50 calibration & measurement voltage (V) temperature: monitor cell: calibration cell: mismatch factor: 23.7 C (uncorrected) VLSI-KG2 (s/n ) VLSI-KG2 (s/n ) 0.97 title

19 9.7% triple junction minimodule on PET foil with production ready materials only active area 4.4 cm² 3 cells in series Voc=7.57V FF=71% Cell eff.=9.7% Absorber from upscaled batch (by toll manufacturer) Stack on glass delivers ~11% PCE at 72% FF Mainly optical losses due to increased surface reflection and lower optical quality of ITO 19

20 Our 4 Core Competencies Unique in-house feedback loop for continuous improvement Materials development Chemistry lab in Ulm with 15 chemists specialized in organic materials Stack architecture Physics lab in Dresden with 16 physicists specialized in organic electronics I II IV III OPV business development R2R production Experienced management and solar specialists for market entry First production site in Dresden with 23 engineers and operators 20

21 Focus on 3 segments Selection of three core markets Market Segment Key success factors BiPV Polycarbonate Metal Glass Concrete Integration into multiple building materials Custom-designed dimensions Up to 50% transmission light Harvesting factor Ultra-thin and ultra-light Various colors and homogenous surface Transport Automotive Transparent Film 500g/m² Flexible PET-substrate Truly green technology Colorful solar films & homogenous surface Harvesting factor Light Structures Street furniture Shading structures Sunshades 500g/m² Bending radius of 10 cm 1mm thick Robustness Custom-designed dimensions Up to 50% transmission light 21

22 B2B Business Model Adding functionality to traditional applications 22

23 At Heliatek Headquarters First Heliatek OPV glass-glass façade Facing east 40 glasses à 2 foil modules 960 Wp installed power ~ 370 kwh per year 23

24 Coworkers and People Involved in Heliatek s Network Universität Ulm, Abteilung organische Chemie II: P. Bäuerle et al. Institut für Angewandte Photophysik (TU Dresden): K. Leo et al. BASF SE: Bosch GmbH: Novaled AG, Dresden: FHR Anlagenbau 3D Micromac, Chemnitz Fraunhofer COMEDD Fraunhofer IWS Fraunhofer FEP Fraunhofer ISE Institut für Polymerforschung (IPF), Dresden Creaphys GmbH, Dresden 24

25 Acknowledgement Research and development work, as well as the installation of production technology, has been funded by: The Sächsische Aufbaubank (SAB) The BMBF (German Secretary for Education and Science) The BMWi (Federal Ministry of Economics and Technology) The European Fund for Regional Development (EFRE) The European Community's Seventh Framework Program (FP7/ ) BMBF: Contract Nr. 13N9716, 13N9869; SAB: Contract Nr (UFOS)/Bewilligung Nr (GA) EU grant agreement n of the X10D 25

26 Our 4 Core Competencies Unique in-house feedback loop for continuous improvement I IV II III 26

27 Thank you for your attention! First Heliatek OPV glass-glass façade