Technologies - Adam Lorenz

DIRECT WAFER® MANUFACTURING: CREATING A NEW CENTER FOR STRATEGIC ADVANTAGE DR. ADAM LORENZ, CTO PV CELL TECH MARCH 12, 2019 SLIDE 2 THE WORLD’S FIRST DIRECT WAFER FACTORY PRODUCTION SCALE FACILITY IN CYBERJAYA, MALAYSIA SLIDE 3 RESULT OF YEARS-LONG COLLABORATION PRODUCTION SCALE FACILITY IN CYBERJAYA, MALAYSIA 1366 TECHNOLOGIES AND HANWHA Q CELLS TEAM AT THE CYBERJAYA FACTORY (MARCH 2019) SLIDE 4 A BETTER MANUFACTURING PROCESS GET RID OF THE INGOT ! Too SLOW, high inventory WIP cost MELT CHARGE + SEED, NECK AND SHOULDER + CRYSTALLIZE + GRADUALLY COOL TO PREVENT CRACKING + BRICK SAWING AND GRINDING + WAFER SAWING = ABSOLUTE MINIMUM 3 DAYS SLIDE 5 SILICON IS A GREAT MATERIAL: DON’T WASTE IT! DIRECT WAFER® (180µm) Mono CZ (160 µm) SLIDE 6 ADVANTAGES OF SINGLE PIECE FLOW 1ms bulk lifetime with lower boron concentration Effective Lifetime measured on Direct Wafer product of different resistivity (p-type) Measured effective lifetime (circles) and estimated bulk lifetime (triangles) at 1014 cm-3 excess carrier density. SLIDE 12 12 • High conductivity of base material is only important for PERC • Efficiency is independent of bulk resistivity for all cell architectures with a 1D current flow pattern • High-resistivity, high-lifetime Direct Wafer suited to leverage efficiency entitlement of Next Gen cell architectures From S.W. Glunz et al, EUPVSEC (2015) NCELL INDEPENDENT OF RESISTIVITY Cells with 1D current flow pattern (BSF, PERT, and TOPCON) SLIDE 13 • Demonstrating Direct Wafer technology in production now –Validation of process advantages • Reach 22% SUMMARY Thank you! Contact: alorenz@1366tech.com