One-step fabrication of ultralong nanobelts of PI-PTCDI and their optoelectronic properties

The ultralong nanobelts of N,N-bis-(1-propylimidazole)-3,4,9,10-perylene tetracarboxylic diimide (PI-PTCDI) were fabricated by a one-step solution process. The prototype devices based on the PI-PTCDI nanobelts exhibited excellent photodetector and photoswitching performance. The highest I-on/I-off ratio and photoresponsivity of photodiodes could reach 240 and 5.6 mA W-1, respectively.