[17a-M_123-1~12] 12.4 Organic light-emitting devices, organic transistors, and flexible devices

9:15 AM - 9:30 AM JST(12:15 AM - 12:30 AM UTC)

[17a-M_123-2] Performance Enhancement and Photoinduced Threshold-Voltage Shift in Organic Phototransistors Incorporating Graphitic Carbon Nitride

〇Yuta Doi¹, Dai Taguchi¹, Takaaki Manaka¹ (1.Science Tokyo)

Keywords:

phototransistor

This study aimed to enhance the mobility and photoresponse of the polymer semiconductor DPP-DTT by adding C₃N₅ nanosheets. Experimental results confirmed a 2.1-fold increase in mobility due to improved packing and an increase in photoresponse (threshold voltage shift) due to enhanced exciton separation following the addition of 3% C₃N₅. Furthermore, evaluation of the internal electric field using the EFI-SHG method suggested that trapping of photoexcited electrons is the primary cause of the threshold voltage variation.