Clean doping strategy produces more responsive phototransistors

https://phys.org/news/2022-06-doping-strategy-responsive-phototransistors.html

"doping 2D layered InSe via NTD... narrowed bandgap and increased electron mobility of SN-doped layered InSe... raised field-effect electron mobility from 1.92 cm2 V-1 s-1 to 195 cm2 V-1 s-1... responsivity improved fifty times to 397 A/W... dopants strictly controlled and introduced... doping at atomic level... placed exactly and know precise impact of dopant in that location. Finally, NTD could be used to protect people, particularly when sensing gases or other biological issues"