Fig. 5
From: Black phosphorus ink formulation for inkjet printing of optoelectronics and photonics
Optoelectronic and photonic devices using inkjet printed BP. a Integration of a printed BP saturable absorber (SA) between fibre patch cords for ultrashort pulse generation with fibre lasers. b Output laser spectrum across 30 days, and c overlay of the spectrum acquired after 0, 174, 354, 534 and 714 h of operation. d Overlay of radio frequency spectrum at the cavity fundamental repetition frequency of 31.6 MHz after 0, 174, 354, 534 and 714 h of operation. e Schematic of the BP/graphene/Si Schottky junction photodetector and the device band diagram configuration. Associated current response for f 450 nm and g 1550 nm illumination, the dashed lines show the response of the graphene/Si Schottky junction photodetector without printed BP. Dark current has been subtracted in all the cases
