Phase Selectivity of Copper Sulfide: Synthesis and Application

Selenylation to charge transfer improvement at the counter electrode (CE)/electrolyte interface for nanocrystalline Cu1.8S1−xSex CEs

“…53,54 A broad Raman peak at 263 cm −1 is observed which is assigned to the vibration of the Cu–S bond. 23,53–55 The spectra of S 01 , S 02 and S 03 show the Raman spectra of ternary Cu–S–Se alloys with the increasing Se content. The three distinct peaks correspond to Se–Se, S–Se, and S–S vibration modes, which shift to lower wavenumbers with the increasing of Se content.…”

“…The temperature of the furnace was increased to 250 °C and maintained for 30 min with a heating rate of 5 °C min −1 . 23 The thickness of the as-fabricated CEs is about 6 μm. The schematic diagram of the synthesis process is shown in Fig S1b in ESI† Appendix.…”

“…A PCE of 2.88% was achieved. 22 Cu 1.75 S was synthesized using an easy two-step heating method and assembled to DSSCs as CEs, and a PCE of up to 3.62% was achieved by Y. Zhu et al 23 A PCE of 6.38% was gained by X. Zhang et al using an electrospinning template and magnetron sputtering to obtain CEs made from CuS nanowires. 24…”

Snowflake-like Cu-BDC-NH2/Cu58S32 Binary Nanohybrid for H2 Evolution and O2 Reduction

“…43 The pristine CS(np) and CS(sf) show a distinct vibration peak at 473 cm −1 corresponding to S−S stretching. 44 This peak is preserved in the CSM(np/sf)-X heterostructure materials amidst peak broadening and shifting by 5−7 cm −1 toward the lower energy side. This observation suggests a change in the local coordination symmetry because of the expulsion of Cu from the CS lattice and its subsequent utilization in formation of Cu-BDC-NH 2 MOF.…”

“…The high optical absorptivity of the CS(np/sf) can be ascribed to cation vacancy in the nonstoichiometric Cu 1.81 S lattice. 4,44 After the construction of binary heterojunctions, the resulting CSM(np/sf)-X composite displayed broad spectrum absorption while retaining the characteristic transitions of the Cu-MOF component. In addition, CSM(sf)-7 exhibits high absorbance intensity at all wavelengths due to efficient solar light harvesting by the well-ordered snowflake structure through multiple absorption−reflection cycles.…”