S18-187 Low Cost Silicon (Si)/Transition Metal Dichalcogenides (TMDs) Tandem Solar Cells with goal of >30% Efficiency Stanford researchers have developed a method to fabricate highly efficient Si/TMDs tandem solar cells which aims to break the 30% efficiency barrier with low cost and increased reliability. Krishna Saraswat Jin-Hong Park Raisul Islam Koosha Nassiri Nazif