Charge transfer at aluminum-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">C</mml:mi></mml:mrow><mml:mrow><mml:mn>60</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>interfaces in thin-film multilayer structures

Hebard, A. F.; Eom, C. B.; Iwasa, Yoshihiro; Lyons, K. B.; Thomas, G. A.; Rapkine, D. H.; Fleming, R. M.; Haddon, Robert C.; Phillips, Julia M.; Marshall, J. H.; Eick, R. H.

doi:10.1103/physrevb.50.17740

Cited by 60 publications

(41 citation statements)

References 12 publications

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“…Our experiments also indicated that no conductivity peak appears in C 60 /Ag samples when the nominal thickness of the Ag underlayer is larger than 3.0 nm. In this case, the conductivity behaviors of the films are consistent with those previously reported [7][8][9].…”

Section: Resultssupporting

confidence: 80%

“…The results show that when the thickness of the C 60 overlayer is about 1.6 nm, the conductivity of the film has a maximum. Such result is quite different to those reported previously [7][8][9].…”

Section: Introductioncontrasting

confidence: 57%

“…Recently, many works indicated the charge transfer from noble metals to C 60 [3][4][5][6]. Hebard et al studied the Al/C 60 multilayer [7] by in situ resistance measurement and found that the presence of a C 60 underlayer reduces the critical thickness at which Al becomes conducting. Moreover, the resistance of the Al/C 60 multilayer increases slightly again after reaching a minimum.…”

Section: Introductionmentioning

confidence: 99%

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Anomalous Conductivity Behavior in C60 Covered Ag Granular Films

Tang

Wang

et al. 2001

phys. stat. sol. (a)

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In this paper, C 60 /Ag bilayers were prepared on mica and NaCl substrates by thermal evaporation, the temperature of the substrates was kept at 300 K during the fabrication of the sample. The electrical conductance of the film was measured during C 60 covering. An anomalous peak of conductivity was observed when the thickness of the C 60 overlayer was around 1.6 nm, implying that 1-2 monolayer(s) of the C 60 coverlayer were ''metallic". A possible mechanism is discussed.

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Section: Resultssupporting

confidence: 80%

Section: Introductioncontrasting

confidence: 57%

Section: Introductionmentioning

confidence: 99%

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Anomalous Conductivity Behavior in C60 Covered Ag Granular Films

Tang

Wang

et al. 2001

phys. stat. sol. (a)

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“…[14,15] This may explain the superlinear dependence of the conductivity on thickness in combination with the absence of rectification. Generally, C 60 with ITO and Al contacts would follow an electron-dominated space-charge-limited behavior, where the current follows the Mott-Gurney law, J ¼ 9…”

Section: Full Papermentioning

confidence: 99%

On the Role of Bathocuproine in Organic Photovoltaic Cells

Gommans

Verreet

Rand

et al. 2008

Adv Funct Materials

159

134

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The effect of bathocuproine (BCP) on the optical and electrical properties of organic planar heterojunction photovoltaic cells is quantified by current–voltage characterization under 1 sun AM 1.5D simulated solar illumination and spectral response at short‐circuit conditions. By inserting a 10 nm BCP layer in an indium tin oxide (ITO)/subphthalocyanine (SubPc)/buckminsterfullerene (C60)/BCP/Al thin‐film structure, an increase in power‐conversion efficiency from 0.05 to 3.0% is observed, mostly reflected in the enhanced open‐circuit voltage up to 920 mV. Furthermore, the incorporation of a 10‐nm BCP layer in an ITO/C60/BCP/Al structure leads to an increase in built‐in potential from 250 to 850 mV, as demonstrated by electroabsorption. It is argued that BCP passivates C60 such that a 10‐nm layer provides a sufficient buffer layer that prohibits Al contacting the C60 where it would otherwise create donor states.

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“…The dependence of surface resistivity on charge transfer from adsorbates has been demonstrated both theoretically and experimentally [29][30][31][32]. The fullerene, C 60 has been found to have an especially strong effect, corresponding to a cross section for electron scattering of 50 Å 2 .…”

Section: Charge Transfer From Adsorbatesmentioning

confidence: 97%