What is the difference CMOS and CCD image sensors? In terms of Infrared spectrum
Teledyne offers a really nice explanation of this here. 

The short answer (minus any recent developments) is that CCD is probably you're best bet for infrared. Infrared imaging requires a thicker photo absorption layer in your sensor that is most easily achievable with CCD senors. CCD's are in general more costly than CMOS for off the shelf and have higher power requirements.