Crystalline silicon solar cell

The invention discloses a crystalline silicon solar cell. A grid line electrode of the crystalline silicon solar cell comprises a first metal layer formed on a doped conductive layer, a medium conductive layer formed on the first metal layer, and a second metal layer formed on the medium conductive layer, the first metal layer and the doped conductive layer form a metal silicide or a multi-component compound taking metal-silicon as a main component at an interface; and the medium conductive layer is made of metal nitride, carbide, boride, phosphide or metal nitric oxide. The electrode contact part of the crystalline silicon photovoltaic cell is improved, firstly, a silver electrode material with very high cost and a high-temperature sintering process are replaced, and the possibility that low-cost metal is applied to the crystalline silicon photovoltaic cell is widened while the production cost is greatly reduced; and secondly, when metal contact with a thin film structure, including electric contact with a h