Comparison of the drift mobility measured under transient and steady-state conditions in a prototypical hopping system

Abkowtz, M.; Pai, D. M.

doi:10.1080/13642818608240642

Cited by 133 publications

(19 citation statements)

References 23 publications

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“…N(PhBr) 3 SbCl 6 acts as a dopant, introducing free charge carriers in the HTM by oxidation, as confirmed by spectroelectrochemical measurements. Partial oxidation of OMeTAD by N(PhBr) 3 SbCl 6 is a convenient way to control the dopant level 15 . On adding N(PhBr) 3 SbCl 6 to a solution of OMeTAD in chlorobenzene, the radical cation OMeTAD + is instantly formed.…”

Section: And 11) Photoinduced Charge-carrier Generation At the Hetermentioning

confidence: 99%

Solid-state dye-sensitized mesoporous TiO2 solar cells with high photon-to-electron conversion efficiencies

Bach

Lupo²,

Comte

et al. 1998

Nature

3,433

2,237

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Correlation coefficients (r) are shown for organochlorine concentrations (ng l −1 ) in snow and site elevation (m.a.s.l.) for the equation conc: ¼ ae b Elev: , where a and b are fitted constants. Asterisks show significance at P р 0:05, for 19 degrees of freedom. Sub-cooled liquid vapour pressures are included for pesticides at 20 ЊC (ref. 21) and PCBs at 25 ЊC (ref. 22). Published vapour pressures vary considerably, so these values represent mean reported values for all PCBs in that class. Ranges of published vapour pressures for each PCB category are shown in brackets.Only compounds with mean sample concentrations that were ten times higher than blanks were considered. † Present addresses:

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Section: And 11) Photoinduced Charge-carrier Generation At the Hetermentioning

confidence: 99%

Solid-state dye-sensitized mesoporous TiO2 solar cells with high photon-to-electron conversion efficiencies

Bach

Lupo²,

Comte

et al. 1998

Nature

3,433

2,237

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“…The SCL formalism has been applied successfully to molecular crystals, [48] molecularly doped polymers [49] and conjugated polymers. [50][51][52] Another possibility to obtain the mobility from SCL currents is the use of a transient voltage instead of steady-state conditions (dark injection, DI-SCLC).…”

Section: Space-charge-limited Currents (Sclc)mentioning

confidence: 99%

Photoconduction in Amorphous Organic Solids

2008

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Herein, we focus on the principles of photoconduction in random semiconductors—the key processes being optical generation of charge carriers and their subsequent transport. This is not an overview of the current work in this area, but rather a highlight of elementary processes, their involvement in modern devices and a summary of recent developments and achievements. Experimental results and models are discussed briefly to visualize the mechanism of optical charge generation in pure and doped organic solids. We show current limits of models based on the Onsager theory of charge generation. After the introduction of experimental techniques to characterize charge transport, the hopping concept for transport in organic semiconductors is outlined. The peculiarities of the transport of excitons and charges in disorderd organic semiconductors are highlighted. Finally, a short discussion of ultrafast transport and single chain transport completes the review.

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“…The lowest unoccupied molecular orbital (LUMO) and highest occupied molecular orbital (HOMO) are occurred by the energy states that are involved in the transport of holes and electrons. SCLC type mechanism explain the conduction in device where strong injection is achieved from both electrodes 16,17 When an external electric field is applied to the electrodes, holes are injected from anode ITO into the HTL and drift across it. As the hole mobility is lower in the electron transport layer (ETL), motion of the holes slows down at the interface.…”

Section: Resultsmentioning

confidence: 99%

Investigation of the Electrical Parameters of the Organic Diode Modified with 4-[(3-Methylphenyl)(phenyl)amino] Benzoic Acid

Havare

Can

Yağmurcukardeş

et al. 2016

ECS J. Solid State Sci. Technol.

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4-[(3-Methylphenyl)(phenyl)amino]benzoic acid (MPPBA) self-assembled monolayer (SAM) molecules as hole injection is formed on p and n type Si and on indium-tin oxide (ITO) electrodes to investigate the effect on the electrical parameters of hole only organic device. The hole mobility improvement of organic device was attributed to an intermediate energy level formed between hole transport materials (HTL) (N,N′-Bis(naphthalen-1-yl)-N,N′-bis(phenyl)benzidine -NPB) and ITO when forming an ultrathin MPPBA layer, leading to increase of carrier mobility of the device. Space charge limited current (SCLC) technique is used to estimate the mobility of the NPB formed at the interface metal/organic Ohmic contact. The hole mobility of ITO/NPB/Al and ITO/MPPBA/NPB/Al devices were obtained as 1.80 × 10−6 and 1.76 × 10−3 cm2/Vs, at 1350 E (V/cm)1/2 applied electric field, respectively. SAM modified devices has lower barrier height values. The electronic characteristic parameters of the ITO/(with or without MPPBA)/NPB/Al, Au/n-Si(or p-Si)/(with or without MPPBA)/Au contacts were calculated using current–voltage (I–V) measurements by Schottky type carrier injection.

show abstract

Comparison of the drift mobility measured under transient and steady-state conditions in a prototypical hopping system

Cited by 133 publications

References 23 publications

Solid-state dye-sensitized mesoporous TiO2 solar cells with high photon-to-electron conversion efficiencies

Solid-state dye-sensitized mesoporous TiO2 solar cells with high photon-to-electron conversion efficiencies

Photoconduction in Amorphous Organic Solids

Investigation of the Electrical Parameters of the Organic Diode Modified with 4-[(3-Methylphenyl)(phenyl)amino] Benzoic Acid

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