TY - JOUR PY - 2011// TI - Study of Ni/Cu front metal contact applying selective emitter silicon solar cells JO - Journal of Korean Institute of Metals and Materials A1 - Lee, J. A1 - Kwon, H. A1 - Lee, S. SP - 905 EP - 909 VL - 49 IS - 11 N2 - The formation of front metal contact silicon solar cells is required for low cost, low contact resistance to silicon surfaces. One of the available front metal contacts is Ni/Cu plating, which can be mass produced via asimple and inexpensive process. A selective emitter, meanwhile, involves two different doping levels, with higher doping (≤30 Ω/sq) underneath the grid to achieve good ohmic contact and low doping between the grid in order to minimize the heavy doping effect in the emitter. This study describes the formation of a selective emitter and a nickel suicide seed layer for the front metallization of silicon cells. The contacts were thickened by a plated Ni/Cu two-step metallization process on front contacts. The experimental results showed that the Ni layer via SEM (Scanning Electron Microscopy) and EDX (Energy dispersive X-ray spectroscopy) analyses. Finally, a plated Ni/Cu contact solar cell displayed efficiency of 18.10% on a 2×2 cm 2, Cz wafer.

Language: ko

LA - ko SN - 1738-8228 UR - http://dx.doi.org/10.3365/KJMM.2011.49.11.905 ID - ref1 ER -