Influence of crystal phase for CuInS2 on device performance of polymer–CuInS2/oxide nanoarrays solar cells

Defect Luminescence from Wurtzite CuInS2 Nanocrystals: Combined Experimental and Theoretical Analysis

“…Typically no luminescence is reported for CuInS 2 samples prepared with the WZ structure. However, reported reaction times are often in excess of 30 min. − Thus, it is possible that these samples exhibit PL at earlier stages during their synthesis.…”

“…The hexagonal analogue to the ZB structure, wurtzite (WZ), is distinct from both CP and ZB due to its ABAB layered anionic lattice and is of particular interest as it is anisotropic in the crystallographic c -direction. By exploiting this anisotropy it is possible to control the electronic, structural, , and chemical properties in light-absorbing technologies. Since 2008, considerable synthetic progress has been made with the isolation of single crystalline WZ NCs of CuInS 2 being achieved and the mechanism of their formation being elucidated .…”

Optoelectronic Properties of CuInS2 Nanocrystals and Their Origin

“…Phase selection for CuInS 2 NCs can be achieved through “heat-up”, “hot-injection”, or “template” synthesis methods. In “hot-injection” and “heat-up” techniques, ligand and metal/sulfur precursor choice can be used to tune the crystal structure of the resultant NCs. ,,,− Typically, selection of ligands and precursors that promote the formation of a Cu 2 S intermediate result in a WZ NC product. Similarly, template syntheses utilize an intermediate with similar structure to produce a specific phase: exchange of the appropriate cation into either the β-In 2 S 3 (tetragonal, defective spinel) , or Cu 2 S (hexagonal, wurtzite) ,, results in the formation of chalcopyrite and wurtzite CuInS 2 , respectively.…”

Effects of the growth temperature on the properties of spray deposited CuInS2 thin films for photovoltaic applications

“…Reaching saturation takes different times due to the intrinsic defects and charge carrier recombination which act as parasite processes in the charge carrier generation [45]. The relaxation time is also different due to the residual current registered after the light irradiation is "off" [46]. The CIS_250 and CIS_300 samples have a similar response (more stable for CIS_300); as these samples have different crystallite sizes and roughnesses, this result could indicate that the non-stoichiometry, i.e.…”