Fig. 3: Change of energy level and morphology. | npj Flexible Electronics

Fig. 3: Change of energy level and morphology.

From: Short-wave infrared organic phototransistors with strong infrared-absorbing polytriarylamine by electron-transfer doping

Fig. 3

a Illustration for the electron transfer between PolyTPD and BCF. b Flat energy level (band) diagrams for the explanation of electron transfer-mediated doping mechanism between PolyTPD and BCF. c Phase-mode AFM images (2 μm × 2 μm) for the PolyTPD:BCF films (48 h) according to the doping time. d Change of root-mean-square roughness (Rg) and phase angle (AP) according to the doping time for the PolyTPD:BCF films (48 h).

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