Wire, flat cable, connecting piece and preparation method thereof, and photovoltaic device and preparation method thereof

The invention discloses a wire, a flat cable, a connecting piece and a preparation method thereof, and a photovoltaic device and a preparation method thereof, relates to the field of perovskite cells, and can solve the problems that the interface resistance at a grid line is increased, the efficiency and stability of the device are reduced and the like due to migration of halide ions or other materials in the perovskite device. A wire for a photovoltaic device, comprising: a metal core, and a wire coating for blocking ion migration; and the wire coating is at least distributed on a contact part of the electrode of the solar cell. The lead can be used for a grid line, an interconnection strip, a bus bar and the like of a photovoltaic device. 一种导线、排线、连接件及制备方法、光伏装置及制备方法，涉及钙钛矿电池领域，可解决因钙钛矿器件中的卤素离子或其他材料迁移导致的栅线处界面电阻变大，器件效率和稳定性降低等问题。一种用于光伏装置的导线，包括：金属线芯，和，用于阻隔离子迁移的导线涂层；所述导线涂层至少分布在与太阳能电池的电极的接触部分。该导线可用于光伏装置的栅线、互联条和汇流条等。