Cubic tin sulfide thin films by a Sn-NTA system based chemical bath process

SnS films were prepared by a chemical bath deposition process in which the concentration of nitrilotriacetic acid, acting as the complexing agent, promoted an increase in film thickness, better grain connectivity, and the formation of single-phase cubic pi-SnS. The optical and electrical studies in these films demonstrated that the enhancement of photosensitivity from 19.59 to 22.5 was associated with the elimination of the SnS2 phase, which consequently led to a band gap narrowing from 1.82 to 1.77 eV. (C) 2020 Elsevier B.V. All rights reserved.

Automated summary

SnS films prepared by chemical bath deposition process showed improved properties with increased thickness and better grain connectivity due to the concentration of nitrilotriacetic acid. The enhancement in photosensitivity and band gap narrowing were associated with the elimination of the SnS2 phase in the films.