Please use this identifier to cite or link to this item:
https://hdl.handle.net/10356/105899
Title: | Energy level alignment at the methylammonium lead iodide/copper phthalocyanine interface | Authors: | Chen, Shi Goh, Teck Wee Sabba, Dharani Chua, Julianto Mathews, Nripan Huan, Cheng Hon Alfred Sum, Tze Chien |
Keywords: | DRNTU::Science::Physics::Atomic physics::Properties of matter and antimatter | Issue Date: | 2014 | Source: | Chen, 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-. | Series/Report no.: | APL materials | Abstract: | 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 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. | URI: | https://hdl.handle.net/10356/105899 http://hdl.handle.net/10220/20932 |
ISSN: | 2166-532X | DOI: | 10.1063/1.4889844 | Schools: | School of Materials Science & Engineering School of Physical and Mathematical Sciences |
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. | Fulltext Permission: | open | Fulltext Availability: | With Fulltext |
Appears in Collections: | MSE Journal Articles SPMS Journal Articles |
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Energy level alignment at the methylammonium lead iodide copper phthalocyanine interface.pdf | 1.07 MB | Adobe PDF | View/Open |
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