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Electronic Structure of TiO2/CH(3)NH(3)Pbl(3) Perovskite Solar Cell Interfaces
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2014 (English)In: Journal of Physical Chemistry Letters, ISSN 1948-7185, E-ISSN 1948-7185, Vol. 5, no 4, 648-653 p.Article in journal (Refereed) Published
Abstract [en]

The electronic structure and chemical composition of efficient CH(3)NH(3)Pbl(3) perovskite solar cell materials deposited onto mesoporous TiO2 were studied using photoelectron spectroscopy with hard X-rays. With this technique, it is possible to directly measure the occupied energy levels of the perovskite as well as the TiO2 buried beneath and thereby determine the energy level matching of the interface. The measurements of the valence levels were in good agreement with simulated density of states, and the investigation gives information on the character of the valence levels. We also show that two different deposition techniques give results indicating similar electronic structures.

Place, publisher, year, edition, pages
2014. Vol. 5, no 4, 648-653 p.
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Physical Sciences
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URN: urn:nbn:se:su:diva-102288DOI: 10.1021/jz402749fISI: 000331860900002OAI: oai:DiVA.org:su-102288DiVA: diva2:709879
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AuthorCount:9;

Available from: 2014-04-03 Created: 2014-03-31 Last updated: 2017-12-05Bibliographically approved

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Odelius, Michael
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