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Article Dans Une Revue Beilstein Journal of Nanotechnology Année : 2020

Implementation of data-cube pump–probe KPFM on organic solar cells

Résumé

An implementation of pump-probe Kelvin probe force microscopy (pp-KPFM) is reported that enables recording the time-resolved surface potential in single-point mode or over a 2D grid. The spectroscopic data are acquired in open z-loop configuration, which simplifies the pp-KPFM operation. The validity of the implementation is probed by measurements using electrical pumping. The dynamical photoresponse of a bulk heterojunction solar cell based on PTB7 and PC71BM is subsequently investigated by recording point-spectroscopy curves as a function of the optical power at the cathode and by mapping 2D time-resolved images of the surface photovoltage of the bare organic active layer.
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Dates et versions

hal-02990564 , version 1 (07-11-2020)

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Benjamin Grevin, Olivier Bardagot, Renaud Demadrille. Implementation of data-cube pump–probe KPFM on organic solar cells. Beilstein Journal of Nanotechnology, 2020, 11, pp.323-337. ⟨10.3762/bjnano.11.24⟩. ⟨hal-02990564⟩
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