公开(公告)号：MY158452A

公开(公告)日：2016-10-14

申请号：MYPI2012000839

申请日：2010-09-09

Applicant: BASF SE ,  GP SOLAR GMBH

Inventor： SIMON BRAUN ,  JULIAN PRÖLSS ,  IHOR MELNYK ,  MICHAEL MICHEL ,  STEFAN MATHIJSSEN

IPC: H01L31/0236

Abstract: AN AQUEOUS ACIDIC ETCHING SOLUTION SUITABLE FOR TEXTURING THE SURFACE OF SINGLE CRYSTAL AND POLYCRYSTAL SILICON SUBSTRATES AND CONTAINING, BASED ON THE COMPLETE WEIGHT OF THE SOLUTION, - 3 TO 10% BY WEIGHT OF HYDROFLUORIC ACID; - 10 TO 35% BY WEIGHT OF NITRIC ACID; - 5 TO 40% BY WEIGHT OF SULFURIC ACID; AND - 55 TO 82% BY WEIGHT OF WATER; A METHOD FOR TEXTURING THE SURFACE OF SINGLE CRYSTAL AND POLYCRYSTAL SILICON SUBSTRATES COMPRISING THE STEP OF (1) CONTACTING AT LEAST ONE MAJOR SURFACE OF A SUBSTRATE WITH THE SAID AQUEOUS ACIDIC ETCHING SOLUTION; (2) ETCHING THE AT LEAST ONE MAJOR SURFACE OF THE SUBSTRATE FOR A TIME AND AT A TEMPERATURE SUFFICIENT TO OBTAIN A SURFACE TEXTURE CONSISTING OF RECESSES AND PROTRUSIONS; AND (3) REMOVING THE AT LEAST ONE MAJOR SURFACE OF THE SUBSTRATE FROM THE CONTACT WITH THE AQUEOUS ACIDIC ETCHING SOLUTION; AND A METHOD FOR MANUFACTURING PHOTOVOLTAIC CELLS AND SOLAR CELLS USING THE SAID SOLUTION AND THE SAID TEXTURING METHOD.

公开(公告)号：MY157203A

公开(公告)日：2016-05-13

申请号：MYPI2013000526

申请日：2011-08-25

Applicant: BASF SE

Inventor： SIMON BRAUN ,  ANDREAS KLIPP ,  CORNELIA RÖGER-GÖPFERT ,  CHRISTIAN BITTNER ,  MEICHIN SHEN ,  CHENGWEI LIN

IPC: H01L31/18

Abstract: AN AQUEOUS ACIDIC SOLUTION AND AN AQUEOUS ACIDIC ETCHING SOLUTION SUITABLE FOR TEXTURIZING THE SURFACE OF SINGLE CRYSTAL AND POLYCRYSTAL SILICON SUBSTRATES, - HYDROFLUORIC ACID; - NITRIC ACID; AND - AT LEAST ONE ANIONIC POLYETHER, WHICH IS SURFACE ACTIVE; A METHOD FOR TEXTURIZING THE SURFACE OF SINGLE CRYSTAL AND POLYCRYSTAL SILICON SUBSTRATES COMPRISING THE STEP OF (1) CONTACTING AT LEAST ONE MAJOR SURFACE OF A SUBSTRATE WITH THE SAID AQUEOUS ACIDIC ETCHING SOLUTION; (2) ETCHING THE AT LEAST ONE MAJOR SURFACE OF THE SUBSTRATE FOR A TIME AND AT A TEMPERATURE SUFFICIENT TO OBTAIN A SURFACE TEXTURIZATION CONSISTING OF RECESSES AND PROTRUSIONS; AND (3) REMOVING THE AT LEAST ONE MAJOR SURFACE OF THE SUBSTRATE FROM THE CONTACT WITH THE AQUEOUS ACIDIC ETCHING SOLUTION; AND A METHOD FOR MANUFACTURING PHOTOVOLTAIC CELLS AND SOLAR CELLS USING THE SAID SOLUTION AND THE SAID TEXTURIZING METHOD.