Electronic Level Alignment in Inverted Organometal Perovskite Solar Cells

作者：Philip Schulz, Luisa Whittaker‐Brooks, Bradley A. MacLeod, Dana C. Olson, Yueh‐Lin Loo, Antoine Kahn · 发表于：Advanced Materials Interfaces · 年份：2015 · DOI：10.1002/admi.201400532 · 被引用次数：208 · 研究领域：Perovskite Materials and Applications、Chalcogenide Semiconductor Thin Films、Conducting polymers and applications

The measured energy diagram for inverted cell architectures for perovskite photovoltaic devices is presented. Band offsets are determined in direct and inverse photoemission spectroscopy. The perovskite films assume a slightly p-type characteristic on top of NiO and show good energetic alignment to adjacent organic electron transport layers. The finding explains the function of inverted devices and gives guidelines for optimization.