In this work, we report on single CdS nanobelts (NB), Multi-walled carbon nanotube (MWCNT)/CdS NB and MWCNT: Cu/CdS NB based hybrid devices for photodetector applications. The electrical properties of the MWCNT: Cu/CdS NB devices tends to exhibit excellent photo to dark current ratio and a higher photoresponse of 7.5 times than that of pristine CdS device. The results also suggest MWCNT: Cu/CdS NB for potential application in photodetectors that require high photocurrent to dark current ratio and remarkable stability. (C) 2016 Elsevier B.V. All rights reserved.