Abstract: A perovskite solar cell and a method for manufacturing the same are provided. The method includes: sputtering a compact layer onto a light transmitting electrode, in which the compact layer has a thickness ranging from 20 nm to 120 nm, and a material of the compact layer is titanium dioxide; sputtering a roughened layer onto the compact layer, in which the roughened layer has a thickness ranging from 20 nm to 30 nm, and a material of the roughened layer is titanium dioxide; disposing a perovskite layer onto the roughened layer; disposing a hole transporting layer onto the perovskite layer; and disposing a back electrode onto the hole transporting layer.

Abstract: A composite electrode structure and a method for manufacturing the same are provided. The composite electrode structure is used as a back electrode of a perovskite solar cell. The composite electrode structure includes a first conductive layer and a second conductive layer. The first conductive layer is used to connect with an electron transporting layer or a hole transporting layer. A material of the first conductive layer is a first light transmitting conductive oxide. The second conductive layer is disposed on the first conductive layer. A material of the second conductive layer is a second light transmitting conductive oxide or a conductive metal.

Abstract: A picture frame assembly has a first picture frame and a second picture frame. The first picture frame has a first connection bar, a first insert rod disposed on the first connection bar, a first connection plate, and a first C-shaped clamp plate disposed on the first connection plate. The second picture frame has a second connection bar, a second insert rod disposed on the second connection bar, a second connection plate, and a second C-shaped clamp plate disposed on the second connection plate. The second insert rod is inserted in the first C-shaped clamp plate.