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http://hdl.handle.net/1942/9767
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DC Field | Value | Language |
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dc.contributor.author | Majumdar, Sayani | - |
dc.contributor.author | Majumdar, Himadri S. | - |
dc.contributor.author | Aarnio, Harri | - |
dc.contributor.author | VANDERZANDE, Dirk | - |
dc.contributor.author | Laiho, Reino | - |
dc.contributor.author | Osterbacka, Ronald | - |
dc.date.accessioned | 2009-08-19T08:35:17Z | - |
dc.date.issued | 2009 | - |
dc.identifier.citation | PHYSICAL REVIEW B, 79(20) | - |
dc.identifier.issn | 1098-0121 | - |
dc.identifier.uri | http://hdl.handle.net/1942/9767 | - |
dc.description.abstract | Magnetoelectrical measurements were performed on diodes and bulk heterojunction solar cell blends (BHSCs) to clarify the role of formation of Coulombically bound electron-hole (e-h) pairs on the magnetoresistance (MR) response in organic thin-film devices. BHSCs are suitable model systems because they effectively quench excitons but the probability of forming e-h pairs in them can be tuned over orders of magnitude by the choice of material and solvent in the blend. We have systematically varied the e-h recombination coefficients, which are directly proportional to the probability for the charge carriers to meet in space, and found that a reduced probability of electrons and holes meeting in space lead to the disappearance of the MR. Our results clearly show that MR is a direct consequence of the e-h pair formation. We also found that the MR line shape follows a power-law dependence of B-0.5 at higher fields. | - |
dc.language.iso | en | - |
dc.publisher | AMER PHYSICAL SOC | - |
dc.subject.other | electron-hole recombination; magnetoresistance; magnetoresistive devices; organic light emitting diodes; radiation quenching; solar cells; thin film devices; tuning | - |
dc.title | Role of electron-hole pair formation in organic magnetoresistance | - |
dc.type | Journal Contribution | - |
dc.identifier.issue | 20 | - |
dc.identifier.volume | 79 | - |
local.format.pages | 4 | - |
local.bibliographicCitation.jcat | A1 | - |
dc.description.notes | [Majumdar, Sayani; Majumdar, Himadri S.; Aarnio, Harri; Osterbacka, Ronald] Abo Akad Univ, Dept Phys, SF-20500 Turku, Finland. [Majumdar, Sayani; Majumdar, Himadri S.; Aarnio, Harri; Osterbacka, Ronald] Abo Akad Univ, CoE Funct Mat, SF-20500 Turku, Finland. [Majumdar, Sayani; Laiho, Reino] Univ Turku, Wihuri Phys Lab, Turku 20014, Finland. [Vanderzande, Dirk] Univ Hasselt, Div Chem, Inst Mat Res, B-3590 Diepenbeek, Belgium. | - |
local.type.refereed | Refereed | - |
local.type.specified | Article | - |
dc.bibliographicCitation.oldjcat | A1 | - |
dc.identifier.doi | 10.1103/PhysRevB.79.201202 | - |
dc.identifier.isi | 000266501500008 | - |
item.accessRights | Closed Access | - |
item.contributor | Majumdar, Sayani | - |
item.contributor | Majumdar, Himadri S. | - |
item.contributor | Aarnio, Harri | - |
item.contributor | VANDERZANDE, Dirk | - |
item.contributor | Laiho, Reino | - |
item.contributor | Osterbacka, Ronald | - |
item.fullcitation | Majumdar, Sayani; Majumdar, Himadri S.; Aarnio, Harri; VANDERZANDE, Dirk; Laiho, Reino & Osterbacka, Ronald (2009) Role of electron-hole pair formation in organic magnetoresistance. In: PHYSICAL REVIEW B, 79(20). | - |
item.validation | ecoom 2010 | - |
item.fulltext | No Fulltext | - |
crisitem.journal.issn | 1098-0121 | - |
Appears in Collections: | Research publications |
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