dr. young h. chod335hnnegk3szv.cloudfront.net/wp-content/uploads/sites/... · 2015. 6. 25. ·...
TRANSCRIPT
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Dr. Young H. Cho
Senior Executive Vice President
CPO & CTO
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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.
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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]
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Solar cell efficiency chart
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Efficiency comparison of technologies
[Data: Green et al.: Solar Cell Efficiency Tables(Version45), Prog. Photovolt: Res. Appl. 2015; 23:1–9 © 2014 John Wiley & Sons, Ltd.]
Confirmed terrestrial cell and module efficiencies
Cry
stallin
e S
i Thin
film
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
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PV Production Development by Technology
About 39GWp PV module shipments in 2013
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Crystalline Si solar cell structure
Passivation layer/ Metallization Contact formation
> 20% High Efficiency Monocrystalline Si Solar Cell
HP – multi wafer Surface control
Multicrystalline Si Solar Cell (Commercial module technology)
Main
Technology
Screen printed
solar cell
(Uniform
emitter)
Selective
Emitter/
Shallow
Emitter
PERC
(PERL)
N-type
Bi-facial IBC, HIT
Cell
Efficiency ~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
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Worldwide market shares for
different cell technologies.
Predicted trend for
recombination currents J0bulk,
J0front, J0rear for p-type and n-
type cell concepts.
Solar cell technologies
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Expected trend for emitter sheet resistance.
Expected world market share for different
phosphorous emitter technologies for p-type cells.
Predicted trend for finger width in screen printing.
Finger width needs to be reduced without any
significant reduction in conductivity.
Predicted trend for different metallization technologies.
Process technology – Emitter & Metallization
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Average stabilized efficiency values for Si solar cells (156x156mm²).
Product - Solar cell
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Industrial Solar Cell Process
Texturing Junction AR coating Front contact Rear contact Firing
Wet etching P diffusion
& Wet isolation SiNx PECVD Ag printing Al printing Fast firing
SPSC(Screen Printed Solar 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
PERC(Passivated Emitter and Rear Cell)
Industrial PERC η>20%
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PERC cell
(Photovoltaic International 2013.12)
Published results for 156mm p-type PERC solar cells with screen printed contacts
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Heterojunction solar cell
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Heterojunction Solar Cell - Panasonic
Structure of crystalline silicon heterojunction solar cell with interdigitated back contact.
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)
Progress In Cell Parameter
Source) IEEE JOURNAL OF PHOTOVOLTAICS, VOL. 4, NO. 6, NOVEMBER 2014
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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
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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
Metallization
Rear Side Polishing & Cleaning Tech. Rear Passivation Tech. Laser Patterning
Use N-type wafers with high quality Precise control of doping profile Reduce contact recombination losses
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Product - Cell
Mono 2BB 3BB
Dimension Format 156ⅹ156±0.5mm
Diagonal 200±0.5mm
Thickness 200±20㎛
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±20㎛
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
Altus19 : High efficiency solar cell series of Shinsung Solar Energy
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Product - Module
Mono Multi 60cell ; 250~260w 72cell ; 300~310w
60cell ; 260~270w 72cell ; 310~325w
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• The World best technology
; R&D - the new world record, 20.03% conversion efficiency rate
R&D competitiveness
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Product Competitiveness ; Solar Cell
2015
2017
2020~
Pilot cell : 20.2%
High effi. cell > 21%
Module power : 280W/300W
High effi. cell : > 22%
Module power : > 300W
New application system
High effi. cell : > 25%
Module power : > 350W
High Value Product
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Thank you