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.
All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering
- electronic structures/processes/mechanisms
- hybrid materials
- photovoltaic devices