Non-precious transition metals as counter electrode of perovskite solar cells

Usually, perovskite solar cells employ gold or silver as counter electrode materials. The use of the precious metals is a serious obstacle to the practical application of perovskite solar cells. In this work, low-cost non-precious transition metals are investigated to replace gold or silver as counter electrode materials in perovskite solar cells. Under optimized conditions, perovskite solar cells with Cu, Ni, W, and Mo films, prepared by...