The influences of additive elements on properties of gold wire and the technology of homogeneously adding those elements to gold matrix were studied. A BJ-type gold bonding wire for automatic bonders was developed, wh...The influences of additive elements on properties of gold wire and the technology of homogeneously adding those elements to gold matrix were studied. A BJ-type gold bonding wire for automatic bonders was developed, which has high bond strength and stable uniform mechanical properties and is capable of forming good spherical shape of melting-ball observed by SEM. The bonding wire is fully suitable to the requirements of the automatic bonding technology and satisfies the performance requirement of IC products.展开更多
Texturing of diamond wire cut wafers using a standard wafer etch process chemistry has always been a challenge in solar cell manufacturing industry. This is due to the change in surface morphology of diamond wire cut ...Texturing of diamond wire cut wafers using a standard wafer etch process chemistry has always been a challenge in solar cell manufacturing industry. This is due to the change in surface morphology of diamond wire cut wafers and the abundant presence of amorphous silicon content, which are introduced from wafer manufacturing industry during sawing of multi-crystalline wafers using ultra-thin diamond wires. The industry standard texturing process for multi-crystalline wafers cannot deliver a homogeneous etched silicon surface, thereby requiring an additive compound, which acts like a surfactant in the acidic etch bath to enhance the texturing quality on diamond wire cut wafers. Black silicon wafers on the other hand require completely a different process chemistry and are normally textured using a metal catalyst assisted etching technique or by plasma reactive ion etching technique. In this paper, various challenges associated with cell processing steps using diamond wire cut and black silicon wafers along with cell electrical results using each of these wafer types are discussed.展开更多
文摘The influences of additive elements on properties of gold wire and the technology of homogeneously adding those elements to gold matrix were studied. A BJ-type gold bonding wire for automatic bonders was developed, which has high bond strength and stable uniform mechanical properties and is capable of forming good spherical shape of melting-ball observed by SEM. The bonding wire is fully suitable to the requirements of the automatic bonding technology and satisfies the performance requirement of IC products.
文摘Texturing of diamond wire cut wafers using a standard wafer etch process chemistry has always been a challenge in solar cell manufacturing industry. This is due to the change in surface morphology of diamond wire cut wafers and the abundant presence of amorphous silicon content, which are introduced from wafer manufacturing industry during sawing of multi-crystalline wafers using ultra-thin diamond wires. The industry standard texturing process for multi-crystalline wafers cannot deliver a homogeneous etched silicon surface, thereby requiring an additive compound, which acts like a surfactant in the acidic etch bath to enhance the texturing quality on diamond wire cut wafers. Black silicon wafers on the other hand require completely a different process chemistry and are normally textured using a metal catalyst assisted etching technique or by plasma reactive ion etching technique. In this paper, various challenges associated with cell processing steps using diamond wire cut and black silicon wafers along with cell electrical results using each of these wafer types are discussed.
