6 Jolywood (Taizhou)-Zhifeng Liu

SNEC 2019 Jolywood (Taizhou) Solar Technology 2 • Introduction • About Jolywood group • Roadmap of high-efficiency n-type solar cells in Jolywood • Progress of passivating-contact technology industrialization in Jolywood • Passivating-contact cell progress • Passivating-contact module progress • Mesh transparent backsheet • Summary 3 Jolywood (Suzhou) Sunwatt Co., Ltd. Jolywood (Taizhou) Solar Technology Co., Ltd. Zoomlight (Suzhou) Solar Power Co., Ltd. •Group headquarter; Stock code SZ300393 •Global largest solar backsheet manufacturer •20% market share around the world •100% wholly owned subsidiary •Global largest N-type solar cell capacity more than 2GW • Module capacity more than 1GW • Registered capital 0.2 billion USD, 2016 • 85 patent applications related to high efficiency cell and module (48 granted) •One-stop EPC services (investment, financing, operations and services) 2.0 GW N-type bifacial cell 1.0 GW150 MW N-type IBC N-type bifacial module 20% market share Solar backsheet In Laboratory In Industrialization P-BSF N-PERT N-IBC P-PERC Current average industrial Mono cell efficiency 20.0-22.1% N-HIT 25.1%, IBC, Trina 25.7%, TOPCon, Fraunhofer ISE 26.7%, HBC, ISFH 25.2%, IBC, Sunpower 25%, PERL, UNSW 22.5%, Passivating-contact, Jolywood Cell efficiency (%) 5 Eff icie ncy （ %） Target N-Passivating contact bifacial N-HIT bifacial P-PERC bifacial N-PERT bifacial Cost 6 1985, Bell Comm. Research, USA; 2013 , Fraunhofer ISE ; Germany; Eff 23.02% 2017 , Fraunhofer ISE ; Germany; Eff 25.7% 2018, ISFH; Germany; Eff 26.1% 7 SiNx Coating BSF Ag Grid Ag Grid Al2O3 Passivation Layer P+ Emitter SiNx Coating Capacity: 2.4GW Average production eff: 21.6% SiNx Coating Tunnel Oxide Ag Grid Ag Grid Al2O3 Passivation Layer P+ Emitter SiNx Coating N+ doped poly-si N+ FSF SiNx Coating P+ emitter Ag Grid N++ BSF Al2O3 passivation layer SiNx Coating Antireflection Coating SiO2 Passivation n+ FSF Poly p+ emitter Metal Finger (p) Rear Contact Grids Metal Finger (n) Poly n++ BSF Tunneling oxide SiO2 Passivation Under development Previous production Production R • The tracking system has longer operational lifetimes with the glass–-Backsheet-Frame modules; 20 • Transparent Backsheet VS Glass Backsheet • The transparency degradation of Transparent Backsheet 0 10 20 30 40 50 60 70 80 90 100 280 480 680 880 1080 透光率（ % ） 波长（ nm ） F F C 压花玻璃 T F B 50 55 60 65 70 75 80 85 90 95 100 280 480 680 880 1080 透光率（ % ） 波长（ nm ） FFC P C T 6 0 D H 1 0 0 0 D H 2 0 0 0 UV 5 0 0 FFC TFB Textured Glass Origin PCT60 DH1000 DH2000 UV500 380-780（ nm） 94.64 93.42 93.74 93.12 92.27 87.93 89.53 380-1100（ nm） 93.53 92.25 92.82 92.12 91.16 88.94 89.69 21 • The transparent backsheet is an organic polymer material that is permeabilized. • When the temperature of the module is consistent with the ambient temperature, it absorbs water vapor; • When the temperature of the module is higher than the ambient temperature by 10 °C, the molecular weight of the discharged water is four times that of the inhalation, and when it is 25 °C higher, it is up to 16 times. 数据源自： Absorption and desorption of water in glass/ethylene- vinyl-acetate/glass laminates, polymer testing 25 (2006) 615-622 Module Type Average Power/W Minimum Power Gain/W Maximum Power Gain /W Average Power Gain/W 20 pcs of Transparent Backsheet Bifacial Modules 295.3W 5.2W 5.9W 5.4W 20 pcs of Mesh Transparent Backsheet Bifacial Modules 300.7W 290 292 294 296 298 300 302 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Power Comparison 透明背板双面组件 透明网格背板双面组件 Mesh transparent backsheetTransparent backsheet Promise: The warranty of All the transparent backsheet will be 30 years Extremely High UV resistance by the test 500 kWh/m2 Extremely High PID resistance. Do not need to worry about PID problem Good compability Without changing production line, the yield will be improved. High transmission rate In the wavelength range(400-1100nm), the transmission rate will be 92% Increase 5 watt with light reflection, solar cell receive more light The inner layer of the backsheet will be protected. The UV light will be resisted.P Customize production Lower cost The cost of module BOM will be lower 24 ‘Panda’ Power plant： 29.21MW. Additional 13% power gain compared to monofacial modules Power plant on the lake： 15MW of Jolywood n-type bifacial modules 25 30 MW of n-type bifacial module in Xintai, China. Yangquan, ShanXi: Mountain site, non-flat land; 30MW of Jolywood 72-cell bifacial modules; Additional 12% power gain • Sihong, Jiangsu  104MW of Jolywood bifacial modules with 310Wp power; The world-largest n-type power plant built on the lake; Connected to grid on 2018 Sept 30th 26 • 125 MW of n-type bifacial modules in Sultanate of Oman. It will be the world-largest n-type power plant. • 11.75 MW of n-type bifacial modules in Zonnepark Rilland, Netherlands. 27 Sun Yat-sen University, SYSU  International cooperation 28 • Jolywood focuses on the N-type technology and its mass production with currently 2.4GW n-type cell capacity • Progress in passivating-contact bifacial solar cells in Jolywood: • Average efficiency of 22.66% achieved in production using ion-implantation and screen-printing • Average efficiency of 23.1% and best efficiency of 23.3% with an excellent Voc of 705 mV achieved in R&D • The roadmap of industrial bifacial passivating-contact solar cells exceeding 24% defined • Jolywood developed the mesh transparent backsheet. It can reduce 30% weight Vs. double glass. Jolywood offer 30-year warranty, and reduce LCOE greatly in future. • Jolywood bifacial modules have been widely applied in large amount of PV systems in the world with more than 10% power gain from the bifacial design