Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(a) Photoluminescence spectra (excited at 640 nm; ∼10 mW/μm2; integration time 20 s) of PbS QDs (green, PbS 1; red, PbS 2; blue, PbS 3) within the channel region and electroluminescence spectra from the same spot (VG = 0.1 V; VSD = −1.2 V; integration time, 60 s). (b) External quantum efficiency (EQE) of a PbS light-emitting FET (PbS 2) at different source-drain voltages and thus current densities. Inset: maximum EQE versus corresponding current density.
