Leakage issues in failure analysis of P+ SiGe active area short monitor

During technology development, leakage during inline or bench test of a p+ SiGe active areas short monitor structures may produce false short signal or hide real defect induced leakage. This paper investigates different sources of leakages - defects in SiGe, pressure due to tester probe on test pads, silicidation issues and boron P+ and arsenic N halo ion implants dose/energy. Some changes to mitigate the extraneous leakage are also presented in the paper. © 2011 IEEE.