Papers by Author: Hazian Mamat

Abstract: The experiment discusses the issue of high-energy implant to the resist thickness and how the resist etched away during implantation process. The resist that is use as a mask or material to block the dopant ion such as Phosphorous, Boron or Arsenic introduces into silicon substrate. It is a common practice by all semiconductor industrial players to use photoresist as their protection on desired area in which purposely set as non-implanted area. The research benefits the engineer on determine the sufficient photoresist thickness for specific implant energy.

Abstract: This paper presents Time Dependent Dielectric Breakdown (TDDB) testing of gate oxide on 0.5µm BiCMOS Technology. The gate oxide quality for the technology has been investigated and furthermore to qualify the whole set up of the foundry from the process, equipment, cleanroom control and raw material used to produce high quality gate oxide and hence good quality of BiCMOS devices. TDDB test is the most widely used testing to check the quality of gate oxide and in this paper the TDDB test done on MOS capacitors fabricated using 0.5 µm BiCMOS Technology. Seven consecutive qualification lots have been tested and the data shown that TDDB measurement is capable to differentiate between accepted wafer and rejected wafer. The data also shown that TDDB test was capable to characterise 0.5 µm BiCMOS gate oxide with higher yield and comparable with reference lot from other foundry fab.