Universität zu Köln

Zhu, T., Olthof, S. and Pauporte, Th. (2022). Titanium dioxide surface energy levels tuning by self-assembled monolayers. Appl. Phys. Lett., 121 (14). MELVILLE: AIP Publishing. ISSN 1077-3118

Full text not available from this repository.

Abstract

Tailoring the work function of functional layers in an optoelectronic device is an important means for performance improvement, as it results in changes in charge extraction or recombination. One way to proceed is to adsorb molecules with varying dipole moment strengths and signs. In this communication, the surface of anatase TiO2 is modified using different self-assembled monolayers (4-chlorobenzoic acid, 4-nitrobenzoic acid, 4-methoxybenzoic acid, and beta-alanine) and the energetics at the interface is determined using a series of photoelectron spectroscopy techniques, namely, ultraviolet photoelectron spectroscopy, x-ray photoelectron spectroscopy, and inverse photoemission spectroscopy. The observed changes in work function are correlated with the dipole moments of the respective acids, calculated by density functional theory. Finally, the relevance of this interfacial engineering for controlling the charge extraction from an optoelectronic device is illustrated. Published under an exclusive license by AIP Publishing.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Zhu, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Olthof, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pauporte, Th. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-675772
DOI:	10.1063/5.0107202
Journal or Publication Title:	Appl. Phys. Lett.
Volume:	121
Number:	14
Date:	2022
Publisher:	AIP Publishing
Place of Publication:	MELVILLE
ISSN:	1077-3118
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language PEROVSKITE SOLAR-CELLS; ISONICOTINIC-ACID; BENZOIC-ACID; MONO LAYERS; PERFORMANCE; ADSORPTION; EFFICIENCY; STABILITY Multiple languages Physics, Applied Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/67577