• Keine Ergebnisse gefunden

Impedance Spectroscopy on Polymer-Fullerene Solar Cells Martin Knipper

N/A
N/A
Protected

Academic year: 2022

Aktie "Impedance Spectroscopy on Polymer-Fullerene Solar Cells Martin Knipper"

Copied!
1
0
0

Wird geladen.... (Jetzt Volltext ansehen)

Volltext

(1)

Impedance Spectroscopy on Polymer-Fullerene Solar Cells

Martin Knippera, J¨urgen Parisia, Kevin Coakleyb, Christoph Waldaufb, Christoph J. Brabecb, and Vladimir Dyakonovc

aEnergy and Semiconductor Research Laboratory, Department of Physics, University of Oldenburg, D-26111 Oldenburg, Germany

bKonarka Technologies Germany, Landgrabenstraße 94, D-90443 N¨urnberg, Germany

cFaculty of Physics and Astronomy, University of W¨urzburg, AmHubland, D-97074 W¨urzburg, Germany

Reprint requests to Dr. M. K.; Fax: + 49 441 798 3326; E-mail: knipper@uni-oldenburg.de Z. Naturforsch.62a,490 – 494 (2007); received April 24, 2007

Impedance spectroscopy is used for studying the electrical transport properties of bulk heterojunc- tion solar cells. A replacement circuit is needed to translate the frequency response of the circuit to the individual interfaces and layers of the solar cell. As a material combination and device architec- ture, composites of P3HT and PCBM, sandwiched between a transparent ITO front electrode and an aluminum back electrode, as well as a polymer buffer layer were investigated. By varying the film thickness we identified an equivalent circuit capable to fit our experimental data. We found a dielec- tric constant for the P3HT and for the P3HT:PCBM bulk.

Key words:Organic Solar Cells; Bulk Heterojunction; Impedance Spectroscopy; Equivalent Circuit.

Referenzen

ÄHNLICHE DOKUMENTE

Es stellt sich daher nicht die Frage ob, sondern wie spezifische Positionierungen in Praktiken aktualisiert und transformiert werden, in denen sich die Mitglieder

Scenic Understanding and Psychosocial Research Analysis 3.1 The inseparability of subjective and cultural experience 3.2 Associative thinking and research analysis.. 3.2.1

At the same time, as mobile internet becomes available and affordable, the mobile device can play as personal access point to private and shared data, as well as applications, which

PNMs have also shown the effects of capillary pumping [52] on invasion patterns and liquid flow through films in the corners of angular pores on drying rates [53].. In [54] a model

In this chapter we prove that a totally disconnected Julia set of a hyper- bolic rational map can be identified as a Martin boundary of a certain Markov chain on the word space W..

On the other hand, the com- plexes present in the low-pH solutions (pH = 3 ∼ 4) are very unstable. The complexes are easily reduced to produce large amounts of Cu metal on the

The Kunsthalle Bern’s prominent site in the city corresponds to a paradigmatic question of localizing an art scene that in 1918 was already cosmopolitan.11 From early on

The additional series resistance contributions for a three busbar solar cell with a 150 μm high ribbon and a multi busbar solar cell with a 250 μm wire diameter are listed in