Chen, Kongchang

Faes, Antonin

Meng, Fanshun

Nüsch, Frank

Tian, He

Zuppiroli, Libero

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J O U R N A L O F M A T E R I A L S S C I E N C E 4 0 (2 0 0 5 ) 3039Erratum: Counterion effects in cyanineheterojunction photovoltaic devicesFRANK N U¨ ESCHSwiss Federal Laboratories for Materials Testing and Research-EMPA, CH-8600 Du¨bendorf,Switzerland; Laboratoire d’optoe´lectronique des mate´riaux mole´culaires, Institut desmate´riaux, EPFL, CH-1015 Lausanne, SwitzerlandE-mail: frank.nueesch@empa.chANTONIN FAES, LIBERO ZUPPIROLILaboratoire d’optoe´lectronique des mate´riaux mole´culaires, Institut des mate´riaux, EPFL,CH-1015 Lausanne, SwitzerlandFANSHUN MENG, KONGCHANG CHEN, HE TIANInstitute of Fine Chemicals, East China University of Science & Technology, Shanghai200237, P. R. ChinaIn Figure 3b the current-voltage curve was plotted in an erroneous way. The corrected Figure is presented below:Figure 3b Dark current-voltage characteristics of a device based on CY5 with free counterions.At forward bias (positive bias applied to the ITO electrode) the current density is more important than at reversebias (negative bias applied to the ITO electrode). The pronounced hysteretic behaviour depends on the sweep speedof the current-voltage scan and is attributed to slowly moving charges. Since the effect is only seen for cyaninelayers having free counterions, we have attributed this behaviour to the perchlorate counterions accumulating atthe PEDOT interface under forward bias. Similarly to an electrochemical device [23], this charge distributionreduces the energy barrier at the PEDOT/CY5 interface and strongly enhances hole injection. At reverse bias, thecurrent-density is mainly limited by charge injection from both aluminium and PEDOT coated ITO electrodes,respectively.0022–2461 C© 2005 Springer Science + Business Media, Inc. 3039

Erratum: Counterion effects in cyanine heterojunction photovoltaic devices

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Erratum: Counterion effects in cyanine heterojunction photovoltaic devices

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