Controlled Crystal Orientation and Reduced Lattice Distortion with Cystamine Dihydrochloride Spacer for Efficient and Stable 2D/3D Perovskite Solar Cells

Long-chain organic spacer diamine molecules are pivotal in the development of mixed two-dimensional (2D) and three-dimensional (3D) perovskites, as they integrate the enhanced stability of 2D perovskites with exceptional efficiency...