Titelfoto. Current Photovoltaics Research and Development: Next Generation Photovoltaic Production or Science Fiction?

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1 Titelfoto Current Photovoltaics Research and Development: Next Generation Photovoltaic Production or Science Fiction? Dr. Paul Harten, LIMO Lissotschenko Mikrooptik GmbH Intersolar, Munich, 9th June 2011

2 Current PV R&D LIMO: 15 m Investment in the Future Project Name ALPS LasSol Selective Laser Ablation Partners (Associated Parties) Fraunhofer ISE, EdgeWave, 4Jet, LIMO LIMO, Manz Automation, Schott Solar, TRUMPF, Universität Stuttgart IFSW+IPE LMTB (MDI Schott, LIMO, LPKF, Newport Spectar- Physics, Lumera Laser, Edgewave, Solarion, Sulfurcell) Total Value (m ) June 2011 Status 4.7 Just started on 1st January 2011 Sponsor Regional Government of North-Rhine Westphalia 5.9 In progress Federal Ministry of Education and Research 0.2 In progress Federal Ministry of Economics and Technology Laso EdgeWave, LIMO, Malibu, Fraunhofer-ILT, Universität Duisburg-Essen, Forschungszentrum Jülich 3.2 Just started on 1st January 2011 Federal Ministry of the Environment Rainbow Energy Forschungszentrum Dresden- Rossendorf, LIMO, Middle East Technical University, Bilkent University, Nurol Technologies (Signet Solar) 1.0 In progress Federal Ministry of Education and Research 2

3 Innovative Laser Technologies for Photovoltaics Production LIMO Capabilities ALPS Laso Selective Laser Ablation LasSol Rainbow Energy Micro-Optics Production X X X X X Process Controlled Laser Materials Processing X X X X X Laser Beam Shaping X X X X X L 3 LIMO Line Lasers X X X - X Diode Laser Modules X X 3

4 ALPS Adapted Laser Processes for Silicon Solar Cells - Three-year program - Goal: Cost reduction of photovoltaic power by applying adapted laser technology to solar cell production. Shaped intensity profiles, e.g., box shape. Local opening of dielectric layers for front and back contacts Laser doping Laser drying Laser sintering of screen printed contacts Preparation of the development of novel production equipment 4

5 LasSol Laser Doping of Solar Cells - Three-year program - Goals: Significant increase of the efficiency of crystalline silicon solar cells by laser based insertion of selectively doped emitter structures under industrial production conditions. Laboratory scale proof of the basic feasibility of efficient full area laser doped solar cells. 5

6 Selective Laser Ablation - Three-year program - Goals: Replacement of conventional needle scribing by (non-contact) laser ablation Improvement of module efficiency by minimization of channel width and channel spacing 6

7 Laso Laser Ablation Processes for Efficiency Optimized Thin Film Solar Modules - Three-year program - Goals: Development of new electrical interconnection concepts new structuring approaches using laser ablation with minimal changes of the absorber and conducting layer properties and high process stability Development of new concepts regarding thin film solar module technology Source: Unaxis 7

8 RainbowEnergy - Three-year program - Goals: Intensify cooperation between German and Turkish science and industry in the field of Energy Research Development of 3 rd generation high-efficiency devices by means of: (i) better use of the solar Rainbow spectrum by bandgap-engineered silicon nanostructures; (ii) better absorption of sunlight in photovoltaic cells using plasmonic scattering by nanostructured Ag layers. Source: Heinig et al., MRS 2011,Spring Meeting, San Francisco 8

9 Innovative Technologies for Photovoltaics Production LIMO Capabilities ALPS Laso Selective Laser Ablation LasSol Rainbow Energy Micro-Optics Production X X X X X Process Controlled Laser Materials Processing X X X X X Laser Beam Shaping X X X X X L 3 LIMO Line Lasers X X X - X Diode Laser Modules X X 9

10 Micro-Optics Production: Optical 20 nm Accuracy. Collimated Gaussian beam Free-form phase shifting element Generated Top-hat profile Foto 1 Foto 1 Foto 1 10

11 Industrial Strength Laser Materials Processing: Built on Control. - Process development and on-site Applications Center - Transfer from lab to mass production Fast track Six Sigma Contract manufacturing - Automated process control Closed loop temperature control Closed loop power control Foto 1 Foto 1 Foto 1 11

12 Laser Beam Shaping: Tailor Made Light for Generous Process Windows and Winninig Business Cases. - Laser scribing of CdTe and CIS/CIGS and laser based selective emitter doping only works with top-hat beam profiles. - Efficient use of photons makes the difference between a winning and a losing business case for laser beased thin film transformation. raw laser beam beam shaping optics required light field Foto 1 Foto 1 Foto 1 12

13 L 3 LIMO Line Lasers: Industrial Scale Gen 5 10 Single Scan Surface Competitive Per Square Meter Cost. - Up to 75% less power consumption compared to a traditional furnace - Selective transformation of absorbing layers without damage to adjacent layers or the substrate material - Productivity of 5 10 million m² per annum - Cost target 0.30 /m² - 24/7 operation Foto 1 Foto 1 Foto 1 13

14 Diode Laser Modules: Efficient Green Production Tool Engines for Metal, Thermoplastics, Surface and Thin Film Coating Processing. - High wall plug efficiency - No maintenance - Fast track Six Sigma Foto 1 Foto 1 Foto 1 14

15 2010 LIMO Lissotschenko Mikrooptik GmbH Titelfoto Some stuff that looks and sounds like science fiction today is likely to be inside tomorrow s fab for cheaper solar energy. Thank you for your attention!

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