SEMI International Standards
SEMI New Activity Report Form (SNARF)



Activity Number: 5158
SNARF for: New Standard:Specification for AntiReflective-Coated Glass, Used in Crystalline Silicon Photovoltaic Modules


Originating Global Technical Committee: Photovoltaic (PV) - Materials
Originating Technical Committee Region: North America
Task Force in which work is to be carried out: PV Materials Task Force


1. Rationale: AR (anti-reflective)-coated glass is used as a superstrate material in crystalline silicon PV modules. Through the use of AR-coated glass, photoelectric conversion efficiency is improved by over 2%. In addition, AR-coated glass prevents dust from adhering to the module’s surface, so the module surface can be cleaned by rain wash. This feature is a significant way to increase the output power of modules under harsh natural environments.

Despite the importance of AR-coated glass, however, there currently is no industry-consensus standard in the Photovoltaic industry for AR-coated glass. Such a standard would improve communication between users and suppliers, reduce costs, and increase productivity, so it is critical for the PV industry to come to consensus in the near future.

Rate the Estimated Effect on the Industry
2: Major effect on an industry sector - identify the relevant sector

Rate the Estimated Technical Difficulty of the Activity
II: Some Difficulty - Disagreements on known requirements exist but developing consensus is possible

2. Scope:
a: Define the areas to be covered or addressed by this activity or document:
Define requirements of AR-coated glass used in crystalline silicon photovoltaic modules, including optical, mechanical and chemical durability,

b: Expected result of activity
New Standard

3. Projected Timetable for Completion:
a: General Milestones
a. Activity Start: 04/01/2011b. 1st Draft by: 12/01/2011
c. Preballot by: d. Technical Ballot by: 03/01/2012
e. Committee Approval By:04/01/2012




Safety Considerations:
The resulting document is expected NOT to be a Safety Guideline


Intellectual Property Considerations:
a. In complying with the standard or safety guideline to be developed, the use of patented technology or a copyrighted item(s) is NOT required
b. The body of the standard and any appendices or related information sections will NOT include copyrighted material

Comments, Special Circumstances: None.

Approval: Activity approved by Committee/GCS on March 30, 2011