Charge transport and recombination in bulk heterojunction solar cells studied by the photoinduced charge extraction in linearly increasing voltage technique

Mozer, Attila J.; Sariciftci, Niyazi Serdar; Lutsen, Laurence; Vanderzande, Dirk; Österbacka, Ronald; Westerling, M.; Juška, G.

doi:10.1063/1.1882753

Cited by 196 publications

(171 citation statements)

References 23 publications

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“…As a further probe of charge carrier dynamics we measured lifetime and mobility for a similar set of devices using photo-CELIV. 41,42 Also by this method a significantly higher µτ was observed for the highest molecular weight polymer (Table S5).…”

Section: Acs Paragon Plus Environmentmentioning

confidence: 94%

Role of Polymer Fractionation in Energetic Losses and Charge Carrier Lifetimes of Polymer: Fullerene Solar Cells

Baran

Vezie²,

Gasparini

et al. 2015

J. Phys. Chem. C

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Section: Acs Paragon Plus Environmentmentioning

confidence: 94%

Role of Polymer Fractionation in Energetic Losses and Charge Carrier Lifetimes of Polymer: Fullerene Solar Cells

Baran

Vezie²,

Gasparini

et al. 2015

J. Phys. Chem. C

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“…In blends of poly͑2 -methoxy-5-͑2Ј-ethylhexyloxy͒-1 , 4-phenylenevinylene͒ with PCBM Mozer et al 15 The solid line denotes simulations using Eq. ͑4͒, while the dashed line corresponds to simulations using Eq.…”

mentioning

confidence: 99%

Bimolecular recombination in polymer/fullerene bulk heterojunction solar cells

Koster

Mihailetchi

Blom

2006

Applied Physics Letters

519

515

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Bimolecular recombination in organic semiconductors is known to follow the Langevin expression, i.e., the rate of recombination depends on the sum of the mobilities of both carriers. We show that this does not hold for polymer/fullerene bulk heterojunction solar cells. The voltage dependence of the photocurrent reveals that the recombination rate in these blends is determined by the slowest charge carrier only, as a consequence of the confinement of both types of carriers to two different phases.

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“…Using the CELIV method we have investigated various amorphous and microcrystalline hydrogenated silicon and π-conjugated polymers as well as their bulk heterojunction layers [3][4][5]. This method enables one to determine the reason of conductivity dependence on electric field strength and temperature: whether this dependence is caused by mobility or density of charge carriers [3].…”

Section: Methods and Their Applicationsmentioning

confidence: 99%

Charge carrier transport and recombination in disordered materials

Juška¹,

Arlauskas²,

Genevičius³

2016

Lith. J. Phys.

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In this brief review the methods for investigation of charge carrier transport and recombination in thin layers of disordered materials and the obtained results are discussed. The method of charge carrier extraction by linearly increasing voltage (CELIV) is useful for the determination of mobility, bulk conductivity and density of equilibrium charge carriers. The extraction of photogenerated charge carriers (photo-CELIV) allows one to independently investigate relaxation of both the mobility and density of photogenerated charge carriers. The extraction of injected charge carriers (i-CELIV) is effective for the independent investigation of transport peculiarities of both injected holes and electrons in bulk heterojunctions. For the investigation of charge carrier recombination we proposed integral time-of-flight (TOF) and double-injection (DI) current transient methods. The methods allowed us to obtain the following significant results: to determine the reason of the conductivity dependence on electric field strength and temperature in the amorphous and microcrystalline hydrogenated silicon and π-conjugated polymers, the time dependent Langevin recombination, the impact of morphology on charge carrier mobility, the reason of reduced Langevin recombination in RR-PHT (regioregular poly(3-hexylthiophene))/PCBM (1-(3-methoxycarbonyl)propyl-1phenyl-[6,6]-methanofullerene) bulk heterojunction structures -2D Langevin recombination; and to evaluate that the mobility of holes is predetermined by off-diagonal dispersion in poly-PbO.

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Charge transport and recombination in bulk heterojunction solar cells studied by the photoinduced charge extraction in linearly increasing voltage technique

Cited by 196 publications

References 23 publications

Role of Polymer Fractionation in Energetic Losses and Charge Carrier Lifetimes of Polymer: Fullerene Solar Cells

Role of Polymer Fractionation in Energetic Losses and Charge Carrier Lifetimes of Polymer: Fullerene Solar Cells

Bimolecular recombination in polymer/fullerene bulk heterojunction solar cells

Charge carrier transport and recombination in disordered materials

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