Generally we use in hetero-junctions structures with chalcogenide materials in solar cells like CIS, CIGS, CdTe and also CdS or CdSe., SnO2 and SnO4, Cu2S with different thicknesses in the final device.
It depends if you are looking for solid state devices or photo-electrochemical devices.
In the case of solid state, the following book gives a good overview:
R. Scheer and H.-W. Schock, Chalcogenide Photovoltaics - Physics, Technologies, and Thin Film Devices. 2011, Weinheim: Wiley VCH. ISBN-10: 3-527-31459-8
Alreday in 1985 photo-electrochemical cells with more than 14% have been achieved with transition metal dichalcogenides:
e.g: Passivation of recombination centers in n‐WSe2 yields high efficiency (>14%) photoelectrochemical cell, R. Tenne and A. Wold, Appl. Phys. Lett. 47, 707 (1985); http://dx.doi.org/10.1063/1.96066