We study the light matter interaction in WS2 nanotube-graphene hybrid devices. Using scanning photocurrent microscopy we find that by engineering graphene electrodes for WS2 nanotubes we can improve the collection of photogenerated carriers. We observe inhomogeneous spatial photocurrent response with an external quantum efficiency of ∼1% at 0 V bias. We show that defects play an important role and can be utilized to enhance and tune photocarrier generation.Heterostructure devices of transition metal dichalcogenides (TMDCs) and graphene have generated considerable research interest recently because of their superior optical and electronic properties.[1, 2] The semiconducting nature of TMDCs combined with the presence of van Hove singularities in their electronic density of states allows for efficient photon absorption and carrier generation under optical excitation.[3] Combining this feature with the high mobility of graphene has led to optoelectronic studies of heterostructure devices comprising graphene and single layer TMDCs. [1,[3][4][5][6][7] These devices have exhibited good quantum efficiency for photocurrent generation in the visible range. However, the fabrication of such heterostructures requires multiple exfoliation and transfer steps. TMDC nanotubes[8] represent another alternative for such applications; nanowires offer an additional advantage because they can enhance the absorption of light through the formation of optical cavities[9, 10] and quasi 1D structures are known to enhance light matter interaction by virtue of an enhanced joint density of states (JDOS).[11] Silicon and carbon nanotubes have been shown to be promising materials for solar-cell applications. [12,13] Similarly, TMDC nanotubes could also allow for large scale integration of on-chip optoelectronic elements. In addition, the curvature of the nanotubes can be used to engineer spin and valley based optoelectronic control in dichalcogenide systems.[14] Here, we investigate the photoresponse of WS 2 nanotubes with field-effect transistor geometry and the enhanced photoresponse properties of hybrid devices of WS 2 nanotubes with graphene electrodes. One of the motivations for using graphene electrodes for the nanotube is to modulate the density of carriers in the electrodes and modify the Schottky barrier;[15] the other motivation is to observe the spatial homogeneity of the photoresponse. We investigate the efficiency of these devices for photoconversion and attempt to understand the role of defects in modifying optoelectronic properties. [16] Prior to studying the hybrid devices, we probe individual WS 2 nanotubes and show that they offer a good optoelectronic platform. [17,18] We used WS 2 multiwalled * deshmukh@tifr.res.in