Song Yang, Gao Zhi-Hua, Li Tao, Yang Hai-Feng, Zhou Chun-Lan, Liu Zhen-Gang, Wang Wen-Jing, Duan Ye, Li You-Zhong. Theoretical analysis and experimental study of optical loss of metal contacts of crystalline silicon solar cellsJ. Acta Physica Sinica, 2011, 60(9): 098801. DOI: 10.7498/aps.60.098801