Near-infrared light-emitting devices
based on chirality-sorted (8,3), (8,4) enriched carbon nanotubes (CNTs)
are fabricated on transparent and flexible substrate. The devices
emit near-infrared light with well-defined wavelength, narrow peak
width and high intensity. 500 times bending test also shows that the
electric properties and electroluminescence (EL) spectra of devices
do not decay apparently. This work demonstrates that chirality-sorted
CNTs have large advantages in transparent and flexible infrared light
source applications