Pentacene imaging potentials

FIGURE 4.3.16 Schematic of the KFM setup for imaging potentials in a bottom contact (BC) pentacene OTFT. Topographic and potential images are acquired simultaneously. After each topographic line scan (1), the tip is lifted off the surface ( 10 nm) and the surface topography is retracted while recording the surface potential (2). (From Puntambekar, K.P. et ah, Appl. Phys. Lett. 83, 5539-5541, 2003. With kind permission.)... 

Nichols, J.A., Gundlach, D.J. and Jackson, T.N., Potential imaging of pentacene organic thin-film transistors, Appl. Phys. Lett., 83, 2366-2368, 2003. 

Fig. 10 (A) Ball-and-stick model of pentacene and a NC-AFM image taken with a CO-functionalised tip in the Pauli exclusion regime of the tip-sample potential (Ref. 10) (B) Model of the PTCDA molecule and an STM image taken using the scanning tunnelling hydrogen microscopy (STHM) protocol introduced by Temirov et al. (Ref. 53).

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