Fig. 3: Response and mechanism of the photodetector.
From: Organic donor-acceptor heterojunctions for high performance circularly polarized light detection
a Change in drain current ID of the detector in response to CPL illumination. The light responses of LCPL and RCPL are superimposed, and the change of the photocurrent can directly correspond to the photocurrent shown in Fig. 2f. b Photoresponse of the detector to the switch from LCPL to RCPL illumination under different light intensity. c Change of the photocurrent dissymmetry factor exposure to different light intensity illumination. d Change of the circularly dichroism signal and the photocurrent dissymmetry factor of the detector based on different thickness of the 1-P film. e Fluorescence lifetime of DPA on different substrates, silica, CYTOP and 1-P film. f SKPM image of the interface formed by DPA crystal and 1-P film. During the scanning, the bilayer was first placed in the dark condition and then exposed to the laser of 556 nm (from top to the bottom: 556 nm RCPL, 556 nm LCPL, dark). g The mechanism of the CPL photo FETs.
