Solar Cell Architecture: Giant Efficiency Enhancement of GaAs Solar Cells with Graded Antireflection Layers Based on Syringelike ZnO Nanorod Arrays (Adv. Energy Mater. 4/2011)

Architecture innovations are crucial for enhancing the efficiency of solar cells (SCs), which depends on the probability of an incident photon being absorbed. GaAs SCs employing syringe-like ZnO nanorods, providing a smooth index transition from air to the SC surface, show an efficiency boost of 32%. This light-harvesting nanostructure is compatible with existing technology and applicable for various SCs, report Jr-Hau He and co-workers.