Abstract
This paper discussed advances in several suitable passivation schemes and emitter optimization techniques available up to date. c-Si endowed with numerous crystal defects and impurities which are responsible for lower efficiency of solar cells made out of it. The surface passivations and emitter formations are the two inevitable processes to upgrade the solar cells efficiency by circumventing several induced effects due to associated crystal defects and impurities of c-Si. This work will act as a common place for the solar cell researchers, engineers and for the students to get the very recent results of surface passivation and emitter optimization techniques practiced both in the industries and R&D laboratories over the world. Key issues here to be considered while agglomerating the relevant information for each process step are the cost-effectiveness, added complexity, additional benefits, reliability, and efficiency potential.