High performance ambient processed inverted polymer solar cells through interfacial modification with a fullerene self-assembled monolayer

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Original languageEnglish
Article number233304
Journal / PublicationApplied Physics Letters
Volume93
Issue number23
Publication statusPublished - 8 Dec 2008
Externally publishedYes

Abstract

The performance of inverted bulk-heterojunction solar cells with zinc oxide nanoparticles as the electron selective contact is compared to those modified with a fullerene self-assembled monolayer (C60-SAM). The devices modified with a C60-SAM show very significant improvement in conversion efficiencies compared to unmodified devices leading to efficiencies as high as 4.9%. This is due to enhanced electronic coupling of the inorganic/organic interface from the C60-SAM leading to improved fill factor and photocurrent. Furthermore, devices fabricated in an inert environment were compared to those fabricated in ambient showing comparable device performance. © 2008 American Institute of Physics.