The use of organic hole transport layer(HTL)Spiro-OMeTAD in various solar cells imposes serious stabil-ity and cost problems,and thus calls for inorganic substitute materials.In this work,a novel inorganic MnS film pr...The use of organic hole transport layer(HTL)Spiro-OMeTAD in various solar cells imposes serious stabil-ity and cost problems,and thus calls for inorganic substitute materials.In this work,a novel inorganic MnS film prepared by thermal evaporation has been demonstrated to serve as a decent HTL in high-performance Sb_(2)(S,Se)_(3)solar cells,providing a cost-effective all-inorganic solution.A low-temperature air-annealing process for the evaporated MnS layer was found to result in a significant positive effect on the power conversion efficiency(PCE)of Sb_(2)(S,Se)_(3)solar cells,due to its better-matched energy band alignment after partial oxidation.Impressively,the device with the optimized MnS HTL has achieved an excellent PCE of about 9.24%,which is the highest efficiency among all-inorganic Sb_(2)(S,Se)_(3)solar cells.Our result has revealed that MnS is a feasible substitute for organic HTL in Sb-based solar cells to achieve high PCE,low cost,and high stability.展开更多
基金the Science and Technology Department of Hubei Province(2019AAA020)Wuhan Science and Technology Project of China(2019010701011420)+1 种基金Fundamental Research Funds for the Central University(2042021kf0069)the National Natural Science Foundation of China(61974028)。
文摘The use of organic hole transport layer(HTL)Spiro-OMeTAD in various solar cells imposes serious stabil-ity and cost problems,and thus calls for inorganic substitute materials.In this work,a novel inorganic MnS film prepared by thermal evaporation has been demonstrated to serve as a decent HTL in high-performance Sb_(2)(S,Se)_(3)solar cells,providing a cost-effective all-inorganic solution.A low-temperature air-annealing process for the evaporated MnS layer was found to result in a significant positive effect on the power conversion efficiency(PCE)of Sb_(2)(S,Se)_(3)solar cells,due to its better-matched energy band alignment after partial oxidation.Impressively,the device with the optimized MnS HTL has achieved an excellent PCE of about 9.24%,which is the highest efficiency among all-inorganic Sb_(2)(S,Se)_(3)solar cells.Our result has revealed that MnS is a feasible substitute for organic HTL in Sb-based solar cells to achieve high PCE,low cost,and high stability.
