Universität zu Köln

Lenze, Martin R., Umbach, Thorsten E., Lentjes, Christoph and Meerholz, Klaus ORCID: 0000-0001-7450-4672 (2014). Determination of the optical constants of bulk heterojunction active layers from standard solar cell measurements. Org. Electron., 15 (12). S. 3584 - 3590. AMSTERDAM: ELSEVIER. ISSN 1878-5530

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Abstract

The determination of the optical constants n(k) and k(k) for organic bulk heterojunction (BHJ) active layers from standard solar cell measurements is presented. We show for a small molecule based as well as for polymer solar cells that the complex refractive index can be derived from the external quantum efficiency (EQE) in combination with current-voltage curves obtained from a series of devices with different active layer thicknesses. The results are compared to those obtained via established techniques and the impact of differences in n(k) and k(k) on the solar cells is shown by simulation of the current density using a transfer matrix model. (C) 2014 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Lenze, Martin R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Umbach, Thorsten E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lentjes, Christoph UNSPECIFIED UNSPECIFIED UNSPECIFIED Meerholz, Klaus UNSPECIFIED orcid.org/0000-0001-7450-4672 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-421840
DOI:	10.1016/j.orgel.2014.10.001
Journal or Publication Title:	Org. Electron.
Volume:	15
Number:	12
Page Range:	S. 3584 - 3590
Date:	2014
Publisher:	ELSEVIER
Place of Publication:	AMSTERDAM
ISSN:	1878-5530
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Chemistry > Institute of Physical Chemistry
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language QUANTUM EFFICIENCY; CHARGE SEPARATION; POLYMER; MORPHOLOGY; GENERATION; ENERGY; STATES Multiple languages Materials Science, Multidisciplinary; Physics, Applied Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/42184