<Abstrate>
The finite difference time domain simulation shows the existence of an

asymmetric quadrupole of Fano resonance on the surface of a gold–

silica core–shell (Au@silica) nanoparticle (NP) as being incorporated

into the metal oxide nanoarchitecture/P3HT hybrid. Compared to the

metal oxide nanoarchitecture/P3HT hybrid solar cell, a 30% enrichment

of the short-circuit current density (Jsc) is attained in the P3HT-based

nanoarchitectural Fano solar cell with the Au@silica NPs. The enhancement

of charge separation in the cell by the electric field of the Fano resonance

is directly evidenced by time-resolved photoluminescence measurements.

The increase of the degree of P3HT order in the hybrid by the incorporation

of Au@silica NPs into the hybrid active layer may also contribute to the

enhancement in the Jsc. Charge carrier dynamic measurements show that

an electron collection efficiency of ∼97% can be maintained in the P3HT-based

nanoarchitectural Fano solar cell. Significant improvement of the efficiency

of the inverted metal oxide/P3HT hybrid solar cell is therefore achieved.

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