Researchers at Arizona State University have demonstrated a perovskite-silicon tandem cell they claim has low reflectance losses and strong potential for commercial production. The ASU team says that this new cell could lead to 30% efficiency tandem devices. The tandem architecture involves a manufacturing process featuring the solution-based blading of perovskites onto textured silicon wafers.
The device is manufactured in a nitrogen-assisted blading process which ensures deposition of the perovskite layer onto textured silicon is achieved with typical pyramid heights of 1μm. The manufacture of such tandem devices typically results in perovskite heights of 3-10μm.