Dr. Young H. Cho Senior Executive Vice President CPO & CTO
The Top 10 Countries in 2014 The top 10 countries for installations and total installed capacity in 2014 (Source: IEA PVPS) Based on analysis of the leading PV manufacturers and their latest shipment guidance for 2014, PV Tech has compiled the preliminary top 10 rankings for 2014.
Price trends Price trends for poly-si, mc-si wafers, cells, and c-si modules (assumption: 44.1 Wafers per kg with ~22.7g/wafer, average mc-si cell efficiency of 17.3% {4,21Wp}); inset: comparison of the proportion of the price attributable to different module cost elements between 01/2010,01/2013, and 02/2015 (1.86, 0.72, and 0.62 US$/Wp) [ITRPV 2015]
Solar cell efficiency chart
Crystalline Si Thin film Efficiency comparison of technologies Confirmed terrestrial cell and module efficiencies Efficiency η(%) Confirmed terrestrial cell and submodule efficiencies measured under the global AM1.5 spectrum (1000 W/m2) at 25 C Confirmed terrestrial module efficiencies measured under the global AM1.5 spectrum (1000 W/m2) at a cell temperature of 25 C [Data: Green et al.: Solar Cell Efficiency Tables(Version45), Prog. Photovolt: Res. Appl. 2015; 23:1 9 2014 John Wiley & Sons, Ltd.]
PV Production Development by Technology About 39GWp PV module shipments in 2013
Crystalline Si solar cell structure Main Technology Cell Efficiency Screen printed solar cell (Uniform emitter) Selective Emitter/ Shallow Emitter PERC (PERL) N-type Bi-facial IBC, HIT ~18% ~19% ~19.8% ~21.0% ~24.0% Module Power ~250W ~260W ~280W ~300W ~350W Key upgrade Turnkey Front side Rear-side Doping Str./Module Multicrystalline Si Solar Cell (Commercial module technology) HP multi wafer Surface control > 20% High Efficiency Monocrystalline Si Solar Cell Passivation layer/ Metallization Contact formation
Solar cell technologies Worldwide market shares for different cell technologies. Predicted trend for recombination currents J 0 bulk, J 0 front, J 0 rear for p-type and n- type cell concepts.
Process technology Emitter & Metallization Expected world market share for different phosphorous emitter technologies for p-type cells. Expected trend for emitter sheet resistance. Predicted trend for different metallization technologies. Predicted trend for finger width in screen printing. Finger width needs to be reduced without any significant reduction in conductivity.
Product - Solar cell Average stabilized efficiency values for Si solar cells (156x156mm²).
Industrial Solar Cell Process SPSC(Screen Printed Solar Cell) Texturing Junction AR coating Front contact Rear contact Firing Wet etching P diffusion & Wet isolation SiNx PECVD Ag printing Al printing Fast firing PERC(Passivated Emitter and Rear Cell) Texturing Polishing Junction Passivation Passivation AR coating Wet etching Wet etching P ion implant & Annealing AlOx ALD SiNx PECVD SiNx PECVD Patterning Front contact Rear contact Firing Laser contact opening Ag printing Al printing Fast firing Industrial PERC η>20%
PERC cell Published results for 156mm p-type PERC solar cells with screen printed contacts (Photovoltaic International 2013.12)
Heterojunction solar cell
Heterojunction Solar Cell - Panasonic Structure of crystalline silicon heterojunction solar cell with interdigitated back contact. Progress In Cell Parameter I V characteristics of 25.6% efficiency solar cell at research level (certified by AIST). EQE spectra of solar cells with efficiency of 24.7% (dashed line) and 25.6% (solid line) Source) IEEE JOURNAL OF PHOTOVOLTAICS, VOL. 4, NO. 6, NOVEMBER 2014
Back contact Solar Cell - Sunpower Challenges in PV Science, Technology, and Manufacturing: A workshop on the role of theory, modeling, and simulation. Purdue University, August 2-3, 2012
R&D of Shinsung Solar Energy High efficiency Screen printed solar cell New passivation & Metallization Si wafer quality & recombination current ARC Passivation Emitter Optimize & Metallization Rear Side Polishing & Cleaning Tech. Rear Passivation Tech. Laser Patterning Metallization Use N-type wafers with high quality Precise control of doping profile Reduce contact recombination losses
Product - Cell Altus19 : High efficiency solar cell series of Shinsung Solar Energy Mono 2BB 3BB Dimension Format 156ⅹ156±0.5mm Diagonal 200±0.5mm Thickness 200±20μm Shape Pseudo Square Front Side Bus bar Distance/Material 2.0mm Silver 1.5mm Silver Surface Material Blue SiNx anti-reflective coating Rear Side Bus bar Distance/Material 4.0mm (Silver/aluminum) 3.0mm (Silver/aluminum) Surface Material Aluminum Multi 2BB 3BB Dimension Format 156ⅹ156±0.5mm Diagonal 200±0.5mm Thickness 200±20μm Shape Square Front Side Bus bar Distance/Material 2.0mm Silver 1.5mm Silver Surface Material Blue SiNx anti-reflective coating Rear Side Bus bar Distance/Material 4.0mm (Silver/aluminum) 3.0mm (Silver/aluminum) Surface Material Aluminum
Product - Module 60cell ; 260~270w 72cell ; 310~325w Mono Multi 60cell ; 250~260w 72cell ; 300~310w
R&D competitiveness The World best technology ; R&D - the new world record, 20.03% conversion efficiency rate
Product Competitiveness ; Solar Cell High effi. cell : > 25% Module power : > 350W High Value Product High effi. cell : > 22% Module power : > 300W New application system Pilot cell : 20.2% High effi. cell > 21% Module power : 280W/300W 2017 2020~ 2015
Thank you