dc.contributor.authorChen, Shi
dc.contributor.authorGoh, Teck Wee
dc.contributor.authorSabba, Dharani
dc.contributor.authorChua, Julianto
dc.contributor.authorMathews, Nripan
dc.contributor.authorHuan, Cheng Hon Alfred
dc.contributor.authorSum, Tze Chien
dc.identifier.citationChen, S., Goh, T. W., Sabba, D., Chua, J., Mathews, N., Huan, C. H. A., et al. (2014). Energy level alignment at the methylammonium lead iodide/copper phthalocyanine interface. APL materials, 2(8), 081512-.en_US
dc.description.abstractThe 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 negligible interfacial dipole formation – verifying the viability of vacuum level alignment. The highest occupied molecular orbital of CuPc is found to be closer to the Fermi level than the valance band maximum of CH3NH3PbI3, facilitating hole transfer from CH3NH3PbI3 to CuPc. However, subsequent hole extraction from CuPc may be impeded by the downward band bending in the CuPc layer.en_US
dc.format.extent9 p.en_US
dc.relation.ispartofseriesAPL materialsen_US
dc.rights© 2014 American Institute of Physics. This paper was published in APL Materials and is made available as an electronic reprint (preprint) with permission of American Institute of Physics. The paper can be found at the following official DOI: [http://dx.doi.org/10.1063/1.4889844]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.en_US
dc.subjectDRNTU::Science::Physics::Atomic physics::Properties of matter and antimatter
dc.titleEnergy level alignment at the methylammonium lead iodide/copper phthalocyanine interfaceen_US
dc.typeJournal Article
dc.contributor.schoolSchool of Materials Science and Engineeringen_US
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen_US
dc.description.versionPublished versionen_US

Files in this item


This item appears in the following Collection(s)

Show simple item record