7.5% n–i–p Sb₂Se₃ solar cells with CuSCN as a hole-transport layer

Abstract

CuSCN suppresses the back surface recombination and induces grain boundary inversion through Cu diffusion to achieve 7.5% n–i–p Sb2Se3 solar cells.

Numerical Simulation and Performance Evaluation of Highly Efficient Sb2Se3 Solar Cell with Tin Sulfide as Hole Transport Layer

“…Table 3 represents the performance parameters of the Sb 2 Se 3 TFSCs with HTL evaluated in the previous and present works. [ 34,37,43–45,47 ] The present work studies the performances of the Al/FTO/CdS/Sb 2 Se 3 /Mo and Al/FTO/CdS(ETL)/Sb 2 Se 3 /SnS(HTL)/Mo heterojunction structures. It is revealed from the simulation results that the overall performance of the conventional Sb 2 Se 3 solar cell without HTL is notably influenced by the carrier recombination at the back side.…”

“…In the last few years, antimony selenide (Sb 2 Se 3 ) semiconductor has received considerable attention as an attractive absorber material in the thin‐film heterojunction photovoltaic device due to its high absorption coefficient (>10 5 cm −1 ), favorable energy bandgap (1–1.2 eV), reasonable carrier mobility, low toxicity, earth‐abundant constituents, inexpensive, low temperature fabrication process, and excellent stability. [ 20–30 ] In the previous works, several experimental [ 20–23,27,31–40 ] and theoretical [ 41–47 ] studies on improving the performances of the Sb 2 Se 3 ‐based solar cells have been reported. There have been numerous experimental Sb 2 Se 3 ‐based heterojunction solar structures, including TiO 2 /Sb 2 Se 3 , [ 18 ] TiO 2 /Sb 2 Se 3 /CuSCN, [ 31 ] CdS/Sb 2 Se 3 , [ 23,32,33,35,36,38–40 ] CdS/Sb 2 Se 3 /PbS, [ 34 ] and CdS/Sb 2 Se 3 /CuSCN, [ 37 ] described to achieve excellent photovoltaic performance.…”

Vapor transport deposition of Sb2Se3 thin films for photodetector application

“…characteristics are basically consistent with those reported in the relevant literatures. [16][17][18][19] XPS was used to analyze the element composition of the Sb 2 Se 3 film. Figures 6(a) and 6(b) show the XPS spectra of Sb 3d and Se 3d core level, respectively, where the spectra are satisfactorily fitted by several peaks on top of a Shirley background.…”

Boosting VOC of antimony chalcogenide solar cells: A review on interfaces and defects

“…[31] Recently, Li et al deposited a thin CuSCN film by spincoating on Sb 2 Se 3 as the HTL to enhance the device performances (Figure 12I). [133] Proper band alignment, less surface recombination and higher carrier collection efficiency are leading to better carrier transport capacity of Sb 2 Se 3 solar cells (Figure 12J). Additionally, the diffusion of Cu ions promoted the formation of V Cu in CuSCN layer, which could create a strong backfield at the interface.…”