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- Publisher Website: 10.1016/j.orgel.2019.03.054
- Scopus: eid_2-s2.0-85063935129
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Article: On the modeling of dispersive transient photocurrent response of organic solar cells
Title | On the modeling of dispersive transient photocurrent response of organic solar cells |
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Authors | |
Keywords | n Transient photocurrent Fractional-order modeling Impedance spectroscopy |
Issue Date | 2019 |
Publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/orgel |
Citation | Organic Electronics, 2019, v. 70, p. 42-47 How to Cite? |
Abstract | The current methods used for estimating the electrical parameters of organic solar cells (OSC) from time-domain measurements are based on integer-order impedance models. Meanwhile, in the frequency-domain, the adopted circuit models usually contain a constant phase element which is known to capture effectively the fractional-order dispersive behavior of these devices. Therefore, inconsistency arises between the two analyses. In this work, we derive the time-domain relaxation response of an OSC, found to follow a Mittag-Leffler function, using the same fractional-order impedance model. The classical integer-order model that results into the exponential decay of the photocurrent can be easily recovered and should be used as a valid approximation only when the dispersion coefficient is close to unity. |
Persistent Identifier | http://hdl.handle.net/10722/287939 |
ISSN | 2023 Impact Factor: 2.7 2023 SCImago Journal Rankings: 0.648 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Zhang, D | - |
dc.contributor.author | Allagui, A | - |
dc.contributor.author | Elwakil, AS | - |
dc.contributor.author | Nassef, AM | - |
dc.contributor.author | Rezk, H | - |
dc.contributor.author | CHENG, J | - |
dc.contributor.author | Choy, WCH | - |
dc.date.accessioned | 2020-10-05T12:05:28Z | - |
dc.date.available | 2020-10-05T12:05:28Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | Organic Electronics, 2019, v. 70, p. 42-47 | - |
dc.identifier.issn | 1566-1199 | - |
dc.identifier.uri | http://hdl.handle.net/10722/287939 | - |
dc.description.abstract | The current methods used for estimating the electrical parameters of organic solar cells (OSC) from time-domain measurements are based on integer-order impedance models. Meanwhile, in the frequency-domain, the adopted circuit models usually contain a constant phase element which is known to capture effectively the fractional-order dispersive behavior of these devices. Therefore, inconsistency arises between the two analyses. In this work, we derive the time-domain relaxation response of an OSC, found to follow a Mittag-Leffler function, using the same fractional-order impedance model. The classical integer-order model that results into the exponential decay of the photocurrent can be easily recovered and should be used as a valid approximation only when the dispersion coefficient is close to unity. | - |
dc.language | eng | - |
dc.publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/orgel | - |
dc.relation.ispartof | Organic Electronics | - |
dc.subject | n | - |
dc.subject | Transient photocurrent | - |
dc.subject | Fractional-order modeling | - |
dc.subject | Impedance spectroscopy | - |
dc.title | On the modeling of dispersive transient photocurrent response of organic solar cells | - |
dc.type | Article | - |
dc.identifier.email | Choy, WCH: chchoy@eee.hku.hk | - |
dc.identifier.authority | Choy, WCH=rp00218 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.orgel.2019.03.054 | - |
dc.identifier.scopus | eid_2-s2.0-85063935129 | - |
dc.identifier.hkuros | 315687 | - |
dc.identifier.volume | 70 | - |
dc.identifier.spage | 42 | - |
dc.identifier.epage | 47 | - |
dc.identifier.isi | WOS:000467701400006 | - |
dc.publisher.place | Netherlands | - |
dc.identifier.issnl | 1566-1199 | - |