The document summarizes research into creating transparent, conductive copper-doped zinc sulfide (Cu:ZnS) thin films with a wurtzite crystal structure using pulsed laser deposition. Key results include: 1) Films were deposited with 70% average visible light transmittance and a wurtzite structure after annealing, but low and inconsistent conductivity due to non-stoichiometric transfer of materials and copper taking interstitial positions. 2) Improved target designs and annealing reduced layering and increased conductivity up to 2kΩ.cm, but resistivities remain high. 3) Achieving sulfur-rich conditions is needed to make copper substitution energetically favorable and improve conductivity