[N-5-4] Gold-Free Fully Cu-Metallized InGaP/InGaAs/Ge multi-junction solar cell C.H. Hsu1、H.J. Chang1、H.W. Yu1、H.Q Nguyen1、E.Y. Chang1 (1.National Chiao-Tung Univ. (Taiwan)) https://doi.org/10.7567/SSDM.2013.N-5-4