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

Hau, Steven K.; Yip, Hin-Lap; Ma, Hong; Jen, Alex K.-Y.
December 2008
Applied Physics Letters;12/8/2008, Vol. 93 Issue 23, p233304
Academic Journal
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.


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