GB/T 26071-2018 in English

SUPERSEDED

Monocrystalline silicon wafers for solar cells

Issued on:2018-09-17
Implemented on:2019-04-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $160.00
$156.00

Standard No:	GB/T 26071-2018
Document status:	SUPERSEDED
Superseded by:	GB/T 26071-2026 Monocrystalline silicon and wafers for solar cells
Superseded on:	2026-08-01
Title in English:	Monocrystalline silicon wafers for solar cells
Title in Chinese:	太阳能电池用硅单晶片
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2018-09-17
Implemented on:	2019-04-01
Superseding:	GB/T 26071-2010 Mono-crystalline silicon as cut slices for photovoltaic solar cells
ICS Classification:	29.045-Semiconducting materials
Chinese Classification:	H82-Elemental semiconductor material
Professional Classification:	GB-National Standard
Related Keywords:	quasi-square silicon wafers square silicon wafers nominal size monocrystalline silicon wafers silicon wafers silicon wafers quasi-square square silicon wafers
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《GB/T 26071-2018太阳能电池用硅单晶片》由TC203（全国半导体设备和材料标准化技术委员会）归口，TC203SC2（全国半导体设备和材料标准化技术委员会材料分会）执行，主管部门为国家标准化管理委员会。

Introduction

1. Standard background and technology evolution analysis

GB/T26071-2018 "Silicon Single Crystal for Solar Cells" is an important standard that replaces GB/T26071-2010. It has been comprehensively revised mainly to meet the technical development needs of the solar cell industry. The new standard introduces stricter requirements in terms of product classification, physical and chemical properties, and dimensions, and adds a number of new technical indicators to meet the market demand for high-efficiency solar cells.

2. Comparison table of standard frameworks

Standard items	GB/T26071—2010	GB/T26071—2018
Product classification	Quasi-square and round silicon wafers	Quasi-square and square silicon wafers, new specific size requirements
Physical and chemical properties	Indicators such as crystal integrity and oxygen content are not specified	Requirements for crystal integrity, oxygen content and carbon content are added, in line with GB/T25076
Electrical properties	P-type resistivity range: ≥0.5 Ω·cm	P-type resistivity range: 0.2~6.0 Ω·cm; N-type resistivity range: 0.1~20.0 Ω·cm

3. Silicon wafer classification and brand

Product classification:Silicon wafers are divided into P-type and N-type according to conductivity type; they are divided into quasi-square and square according to appearance. Quasi-square silicon wafer sizes include 100.75mm, 125.75mm, 156I, etc., and new square silicon wafer size requirements are added.

Brand indication:The brand of silicon wafers should be carried out in accordance with the provisions of GB/T14844 to ensure that the product identification is clear and traceable.

4. Physical and chemical properties and dimensions

Physical and chemical performance requirements: The crystal integrity, oxygen content and carbon content of the silicon wafer must comply with the provisions of GB/T25076, and the supplier must provide relevant test results.

Dimensions	Quasi-square silicon wafers	Square silicon wafers
Nominal size	100.75mm, 125.75mm, etc.	100.75mm, 125.75mm, 156.75mm, etc.
Dimension deviation	±0.25mm	±0.25mm

5. Electrical performance and crystal orientation requirements

Resistivity range:P type: 0.2~6.0 Ω·cm; N type: 0.1~20.0 Ω·cm.

Crystal orientation requirements:The crystal orientation of the silicon wafer is <100>, and the crystal orientation deviation should not exceed 2°.

6. Implementation suggestions

Corporate compliance suggestions:

Strictly follow the standard requirements for silicon wafer production and inspection to ensure that all indicators meet the requirements.
Establish a complete quality control system and equip it with advanced testing equipment, such as resistivity testers, crystal orientation testers, etc.
Strengthen employee training to enhance the understanding and implementation of the new standards.

More samples: JC/T 2453-2018 JGJ 94-2008 DL/T 5154-2012

Sample only — not a preview of GB/T 26071-2018

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