9.6%-Efficient all-inorganic Sb₂(S,Se)₃ solar cells with a MnS hole-transporting layer

Abstract

Antimony selenosulfide, Sb2(S,Se)3, has emerged as a promising light-harvesting material for its high absorption coefficient, suitable bandgap, low-toxic and low-cost constituents. However, the poor stability and high cost of widely...

Interfacial Engineering towards Enhanced Photovoltaic Performance of Sb2Se3 Solar Cell

“…According to the previous reports, [ 24 ] The Spiro‐OMeTAD solution was prepared by mixing 36.6 mg of Spiro‐OMeTAD, 14.5 µL of 4‐ tert ‐butylpyridine ( t BP) and 9.5 µL of a 520 mg mL −1 lithium trifluoromethanesulfonyl (Li‐TFSI) in acetonitrile into 1 mL of chlorobenzene. The Spiro‐OMeTAD solution was spin‐coated onto the Sb 2 Se 3 at 3000 r. p. m for 30 s, and baked at 105 °C for 10 min.…”

Post-Treatment of TiO2 Film Enables High-Quality Sb2Se3 Film Deposition for Solar Cell Applications

“…Considering this, intensive efforts have been made to exploit novel metal chalcogenides materials. To date, the emerging Cu 2 ZnSn­(S,Se) 4 , AgBiS 2 , AgSbS 2 , SnS, GeSe, CdSe, Sb 2 (S,Se) 3 , − Sb 2 S 3 , − Sb 2 Se 3 , , and so on, have been applied in solar cell fabrication. Among them, the quasi-one-dimensional semiconductor, Sb 2 Se 3 , which possesses a suitable bandgap (1.1–1.3 eV), high absorption coefficient, excellent optical and electrical properties, abundant elemental reserves, remarkable stability to air and moisture, and environmentally friendly characteristics, is regarded as a promising light absorption material.…”

Crystal Growth Promotion and Defect Passivation by Hydrothermal and Selenized Deposition for Substrate-Structured Antimony Selenosulfide Solar Cells

“…Thus, it is urgent to find some cost-effective, environmentally friendly, and intrinsically stable TFPV materials. Antimony chalcogenides Sb 2 (S x ,Se 1– x ) 3 (0 ≤ x ≤ 1) have emerged as highly promising candidates owing to their excellent photoelectric properties. − As a promising absorber, Sb 2 (S x ,Se 1– x ) 3 has a tunable band gap (1.1–1.7 eV), a remarkable absorption coefficient in visible light (>10 5 cm –1 ), excellent stability, and a low-toxicity component, which are essential for solar cells with a high power conversion efficiency (PCE). − Moreover, the Sb 2 (S,Se) 3 film has anisotropic electrical properties because of its stable single orthorhombic phase with a Q1D crystal structure. , Conductivity along the (Sb 4 X 6 ) n (X = S or Se) ribbons ( c axis) is much higher than in the other directions, which is beneficial for enhancing carrier transport and decreasing recombination losses; it is the intrinsic requirement for the high-efficiency solar cell. , Over the past few years, many methods have been developed to prepare Sb 2 (S,Se) 3 absorber layers, such as vapor transport deposition (VTD), coevaporation, and hydrothermal. Although the VTD and coevaporation methods have achieved impressive efficiency, these methods have plenty of problems. , For instance, the vaporized intermediate particles during the deposition would most likely generate defects that affect efficiency. , In addition, the solution-processed (spin coating followed by annealing) Sb 2 (S,Se) 3 films demonstrate low crystallinity, which indicates low conductivity.…”