SEMI International Standards
SEMI New Activity Report Form (SNARF)



Activity Number: 5382
SNARF for: New Standard: Specification for Quasi-monocrystalline Silicon Wafers used in Photovoltaic Solar Cells


Originating Global Technical Committee: Photovoltaic
Originating Technical Committee Region: China
Task Force in which work is to be carried out: PV Silicon Wafer Task Force


1. Rationale: Quasi-monocrystalline Silicon , also called mono-like wafer,casting mono wafer or quasi wafer, etc. is a new product used in PV industry. This is a different product from single-crystalline or multi-crystalline silicon wafer, not only the appearance, also the electrical property are all different. (See the attachment)
Upon researching, no standard has been created in this subject, which caused diversification in product quality. Through summarizing the requirements from several solar cell enterprises and combining technical requirements to build a standard of mono-like wafer, a good basis of processing, manufacturing, and sales of mono-like wafers can be provided.

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 the requirements of mono-like wafer, which will cover the appearance (big grain rate in the whole area), geometrical properties, physical properties, electrical properties, etc.

b: Expected result of activity
New Standard

3. Projected Timetable for Completion:
a: General Milestones
a. Activity Start: 02/06/2012b. 1st Draft by: 08/06/2012
c. Preballot by: d. Technical Ballot by: 09/12/2012
e. Committee Approval By:03/30/2013




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 February 6, 2012






File Attachment Icon
Wafer pictures.docx