Peretzki, Patrick

[["dc.bibliographiccitation.artnumber","012009"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Journal of Physics: Conference Series"],["dc.bibliographiccitation.volume","1190"],["dc.contributor.affiliation","Meyer, T;"],["dc.contributor.affiliation","Kressdorf, B;"],["dc.contributor.affiliation","Lindner, J;"],["dc.contributor.affiliation","Peretzki, P;"],["dc.contributor.affiliation","Roddatis, V;"],["dc.contributor.affiliation","Jooss, C;"],["dc.contributor.affiliation","Seibt, M;"],["dc.contributor.author","Meyer, T."],["dc.contributor.author","Kressdorf, B."],["dc.contributor.author","Lindner, J."],["dc.contributor.author","Peretzki, P."],["dc.contributor.author","Roddatis, V."],["dc.contributor.author","Jooss, Christian"],["dc.contributor.author","Seibt, Michael"],["dc.date.accessioned","2020-12-10T18:15:51Z"],["dc.date.available","2020-12-10T18:15:51Z"],["dc.date.issued","2019"],["dc.date.updated","2022-04-07T11:26:58Z"],["dc.description.abstract","Abstract Fundamental losses of photovoltaic energy conversion are transmission of sub band gap photons and thermalisation which are the underlying physics of the Shockley-Queisser limit defining maximum conversion efficiency of single-junction solar cells. Strongly correlated materials such as perovskites are promising candidates to exceed this limit by exploiting (i) long wavelength light absorption and (ii) the existence of long-living intraband excitations indicating that harvesting hot excess carriers might be feasible in such systems. In this work, we study pn-heterojunctions produced from Pr1-xCaxMnO3 on SrTi1-yNbyO3 by means of microscopic techniques. Such systems exhibit relevant quantities such as space charge layer width, screening lengths and excess carrier diffusion lengths in the 1-10 nm range which makes the use of standard methods such as electron beam induced current a challenging task. We report scanning transmission electron beam induced current experiments of misfit dislocations at the heterojunction. The dislocation-induced reduction of the charge collection is studied with nanometer spatial resolution. Effects of surface recombination and the heterojunction electric field are discussed."],["dc.identifier.doi","10.1088/1742-6596/1190/1/012009"],["dc.identifier.eissn","1742-6596"],["dc.identifier.issn","1742-6588"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16699"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/74976"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.notes.intern","Merged from goescholar"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area B | B02 Photonen-getriebener Energietransfer über Grenzflächen zwischen Materialien mit starken Korrelationen"],["dc.relation","SFB 1073 | Topical Area Z | Z02 Hochauflösende Charakterisierung von Grenzflächen"],["dc.relation.eissn","1742-6596"],["dc.relation.issn","1742-6588"],["dc.relation.orgunit","Fakultät für Physik"],["dc.relation.orgunit","Institut für Materialphysik"],["dc.rights","CC BY 3.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/3.0/"],["dc.title","High-resolution Scanning Transmission EBIC Analysis of Misfit Dislocations at Perovskite pn-Heterojunctions"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1467"],["dc.bibliographiccitation.journal","Beilstein Journal of Nanotechnology"],["dc.bibliographiccitation.lastpage","1484"],["dc.bibliographiccitation.volume","6"],["dc.contributor.author","Ifland, Benedikt"],["dc.contributor.author","Peretzki, Patrick"],["dc.contributor.author","Kressdorf, Birte"],["dc.contributor.author","Saring, Philipp"],["dc.contributor.author","Kelling, Andreas"],["dc.contributor.author","Seibt, Michael"],["dc.contributor.author","Jooss, Christian"],["dc.date.accessioned","2018-11-07T09:54:41Z"],["dc.date.available","2018-11-07T09:54:41Z"],["dc.date.issued","2015"],["dc.description.abstract","After a general introduction into the Shockley theory of current voltage (J-V) characteristics of inorganic and organic semiconductor junctions of different bandwidth, we apply the Shockley theory-based, one diode model to a new type of perovskite junctions with polaronic charge carriers. In particular, we studied manganite-titanate p-n heterojunctions made of n-doped SrTi1-yNbyO3, y = 0.002 and p-doped Pr1-xCaxMnO3, x = 0.34 having a strongly correlated electron system. The diffusion length of the polaron carriers was analyzed by electron beam-induced current (EBIC) in a thin cross plane lamella of the junction. In the J-V characteristics, the polaronic nature of the charge carriers is exhibited mainly by the temperature dependence of the microscopic parameters, such as the hopping mobility of the series resistance and a colossal electro-resistance (CER) effect in the parallel resistance. We conclude that a modification of the Shockley equation incorporating voltage-dependent microscopic polaron parameters is required. Specifically, the voltage dependence of the reverse saturation current density is analyzed and interpreted as a voltage-dependent electron-polaron hole-polaron pair generation and separation at the interface."],["dc.description.sponsorship","Deutsche Forschungsgemeinschaft (DFG), project B02 [SFB1073]"],["dc.identifier.doi","10.3762/bjnano.6.152"],["dc.identifier.isi","000357558400001"],["dc.identifier.pmid","26199851"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/36591"],["dc.language.iso","en"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area B | B02 Photonen-getriebener Energietransfer über Grenzflächen zwischen Materialien mit starken Korrelationen"],["dc.relation.issn","2190-4286"],["dc.relation.orgunit","Institut für Materialphysik"],["dc.rights","CC BY 2.0"],["dc.title","Current-voltage characteristics of manganite-titanite perovskite junctions"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]