Fig. 1. Schematic illustration of chemical materials PDVT-10

Fig. 2. The structure and working principle of synaptic transistor device

Fig. 3. AFM images of P（VDF-TrFe） layer before and after ALD

Fig. 4. The absorption spectrum of the PDVT-10

Fig. 5. Synaptic structures and its basic performance

Fig. 6. PPF performance of synaptic transistors in polarized state 1

Fig. 7. Multi-level photosynaptic properties