Energy level alignment at the methylammonium lead iodide/copper phthalocyanine interface

• Main Authors: Chen, Shi, Goh, Teck Wee, Sabba, Dharani, Chua, Julianto, Mathews, Nripan, Huan, Cheng Hon Alfred, Sum, Tze Chien
• Other Authors: School of Materials Science & Engineering
• Format: Article
• Language: English
• Published: 2014
• Subjects: DRNTU::Science::Physics::Atomic physics::Properties of matter and antimatter
• Online Access: https://hdl.handle.net/10356/105899; http://hdl.handle.net/10220/20932
• Institution: Nanyang Technological University

The energy level alignment at the CH3NH3PbI3/copper phthalocyanine (CuPc) interface is investigated by X-ray photoelectron spectroscopy (XPS) and ultraviolet photoelectron spectroscopy (UPS). XPS reveal a 0.3 eV downward band bending in the CuPc film. UPS validate this finding and further reveal neg...