Studies in CuInS2 based solar cells, including ZnS and In2S3 buffer layers

Effect of thermal annealing on physical properties of vacuum evaporated In2S3 buffer layer for eco-friendly photovoltaic applications

“…Calderon et al [23] fabricated CuInS 2 thin film solar cell with structures Mo/CuInS 2 /ZnS/ZnO and Mo/CuInS 2 /In 2 S 3 / ZnO using ZnS and In 2 S 3 as buffer layers and concluded that the former structure have best efficiency of 7.8% as compared to later structure's efficiency of 6.5%. The effect of sulfurization temperature and time on the optical, electrical and photoelectrical properties of β-In 2 S 3 thin films is investigated by Yoosuf et al [24] employing twostage process with rapid heating in H 2 S atmosphere.…”

Lattice structures and electronic properties of WZ-CuInS2/MoS2 interface from first-principles calculations

“…CIS absorption layer, during the S diffusion, combining part of Mo formed an intermediate MoS 2 layer between CIS and Mo layer [15]. Calderón et al [14] experimentally found such MoS 2 layer in the Mo/CuInS 2 interface [16] and similar structures have also been reported in other solar cells based on Cu(In,Ga)Se 2 [17]. This MoS 2 layer gives rise to a small conduction-band offset with respect to the CuInS 2 bulk material and a small Schottky barrier at the Mo back contact.…”

“…Mo back layer is contacted with the WZ-CIS absorption layer in WZ-CIS thin film solar cells. Some researchers found that portion of S diffused into Mo back contact in CIS deposition process [14]. CIS absorption layer, during the S diffusion, combining part of Mo formed an intermediate MoS 2 layer between CIS and Mo layer [15].…”

“…This MoS 2 layer gives rise to a small conduction-band offset with respect to the CuInS 2 bulk material and a small Schottky barrier at the Mo back contact. Both features are beneficial for device performance [14]. The formation of a thin MoS 2 layer is the facilitation of a quasi ohmic electrical contact across Mo-CIS interface in CIS thin film solar cells.…”

Optical Examination on Zinc Sulphide Nanoparticles for Photovoltaic Applications

“…The highest reported values of power conversion efficiencies (PCEs) for pure CZTS, pure CZTSe and their mixture based solar cells have reached 8.4, 12.6 and 11.6%, respectively [8,9]. The maximum efficiency recorded for copper indium sulfide (CuInS2) thin-film based solar cell is 12.5% and in the case of using ZnS the best efficiency of about 7.8%, was recorded for the cell structure Mo/CuInS2/ZnS/ZnO [10].…”