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