42results about How to "Increase formation energy" patented technology

The invention relates to a perovskite battery based on a co-doped nickel oxide-based hole transport layer and a preparation method of the perovskite battery. The perovskite battery sequentially comprises a conductive substrate, a hole transport layer, an ionic liquid modification layer, a perovskite active layer, an electron transport layer, a hole barrier layer and a metal electrode layer from bottom to top, and the hole transport layer is a Li-Nb co-doped nickel oxide thin film. According to the invention, by introducing the Li and Nb elements, the hole concentration and mobility can be synergistically improved, the energy level arrangement can be optimized, the morphology and crystallinity of the thin film can be improved, the problems of insufficient conductivity, energy band mismatch, interface recombination and the like of NiO-based HTL can be solved, and finally, the perovskite solar cell with higher efficiency, stability and reliability can be realized. The ionic liquid modification layer is also introduced, so that the interface contact between the thin film and the perovskite material can be improved, the contact side reaction is inhibited, and the service life of the perovskite battery is prolonged.