Solar Stencils

Technology Roadmap in Solar Screen

FAITHFUL’s Development in Solar Cell Application --Three Key Products

  1. Efficiency Advance + Cost down
    • The Best solution is E-Stensol E1
  2. Cost down
    • The best solution is BD Screen + D5-2 Process Screen
    • E-Stensol E1 and BD Screen’s performance are certified by solar manufacturers’ mass production.
    • The Evaluation of α-StenSol and E-StenSol E2 Will be finished by Solar Cell Customers in 2016 Q4

Technology High Light

R&D Advanced Screen

  1. α StenSol (Single)
  2. E-StenSol E2 (Dual)

The Comparison Table with Different Advanced Screen

ITEM Competitor-Taiwan Competitor-Japen FAITHFUL
D9 Screen(NEW)
FAITHFUL
D9 + BD Screen(NEW)
FAITHFUL
E-StenSol E1
Benefit (NTD/Wafer) Ref (+0.04) (+)0.16 (+)0.48 (+)0.84
Design Opening(um) – Squeegee 35+/-3 35+/-3 35+/-3 35+/-3 33+/-2
Finger Width (After Firing) 50~55um 50~55um 50~55um 50~55um 45~50um
Laydown(g/cell) 0.135 0.135 0.135 0.125 (-8%) 0.104 (-30%)
Printing Speed(mm/sec) 200 200 250 250 250
EFF Ref -0.03% Comparable Comparable +0.03~0.07%
Screen Life-Time(Prints) 12K~18K 15K~22K 18~25k 18~25k 30~50K

E-StenSol E1

E1 E-StenSol Product Structure

E1 E-StenSol Efficiency Characteristics.

※Efficiency Gain : +0.03~0.07%

Condition STD E-STENSOL
  Med Avg Stdev Med Avg Stdev
ETa 19.857% 19.836% 0.355% 19.913% 19.906% 0.068%
Voc 0.6436 0.6436 0.0010 0.6439 0.6439 0.0006
Isc 9.4272 9.4221 0.1101 9.4371 9.4393 0.0304
FF 79.476 79.429 0.690 79.545 79.535 0.201
Rs 0.00261 0.00264 0.00059 0.00254 0.00255 0.00013

The structure difference between E-StenSol and Normal Screen

 

R&D Advanced - E-StenSol E2

Advantage :

  • Ultra Fine Line → 20um
  • High Aspect Ratio Finger → >0.45
  • Uniform Finger → < 2 um
  • Target Efficiency Gain → >0.3%

R&D Advanced α–StenSol (Single Printing)

The Capacity Plan of E-Forming Products (Solar Screen Only)