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
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
PV Production Development by Technology
About 39GWp PV module shipments in 2013
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
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
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
Average stabilized efficiency values for Si solar cells (156x156mm²).
Product - Solar cell
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%
PERC cell
(Photovoltaic International 2013.12)
Published results for 156mm p-type PERC solar cells with screen printed contacts
Heterojunction solar cell
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
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
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
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
Product - Module
Mono Multi 60cell ; 250~260w 72cell ; 300~310w
60cell ; 260~270w 72cell ; 310~325w
• The World best technology
; R&D - the new world record, 20.03% conversion efficiency rate
R&D competitiveness
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
Thank you