Applied Physics Letters · 2013 · 369 citations · 34 references
EngineeringMaterials EngineeringMaterials ScienceSemiconductor DevicesSemiconductor MaterialsThin FilmsPhotovoltaic DevicesPhotovoltaic MaterialsSemiconductor Device MaterialsSemiconductor Thin FilmsSolar Cell MaterialsSolar CellsBand Offset EngineeringBand Structure EngineeringConduction BandCurrent DensityOxygen-to-sulfur ReplacementPower Conversion EfficiencyThin-film Solar CellsZinc Sulfides
SnS is a promising earth-abundant material for photovoltaic applications. Heterojuction solar cells were made by vapor deposition of p-type tin(II) sulfide, SnS, and n-type zinc oxysulfide, Zn(O,S), using a device structure of soda-lime glass/Mo/SnS/Zn(O,S)/ZnO/ITO. A record efficiency was achieved for SnS-based thin-film solar cells by varying the oxygen-to-sulfur ratio in Zn(O,S). Increasing the sulfur content in Zn(O,S) raises the conduction band offset between Zn(O,S) and SnS to an optimum slightly positive value. A record SnS/Zn(O,S) solar cell with a S/Zn ratio of 0.37 exhibits short circuit current density (Jsc), open circuit voltage (Voc), and fill factor (FF) of 19.4 mA/cm2, 0.244 V, and 42.97%, respectively, as well as an NREL-certified total-area power-conversion efficiency of 2.04% and an uncertified active-area efficiency of 2.46%.
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Synthesis and Photovoltaic Application of Copper(I) Sulfide Nanocrystals
Yue Wu, Cyrus Wadia, Wanli Ma et al. · Nano Letters · 2008 · 684 citations
Takashi Minemoto, Takuya Matsui, Hideyuki Takakura et al. · Solar Energy Materials and Solar Cells · 2001 · 646 citations