Templated Growth and Passivation of Vertically Oriented Antimony Selenide Thin Films for High‐Efficiency Solar Cells in Substrate Configuration

Rijal, Suman; Li, Deng‐Bing; Awni, Rasha A.; Xiao, Chuanxiao; Bista, Sandip S.; Jamarkattel, Manoj K.; Heben, Michael J.; Jiang, Chun‐Sheng; Al‐Jassim, Mowafak; Song, Zhaoning; Yan, Yanfa

doi:10.1002/adfm.202110032

Cited by 49 publications

(47 citation statements)

References 41 publications

(53 reference statements)

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“…Particularly, a seed layer of identical crystalline material is frequently used to fabricate directional Sb 2 Se 3 nanoribbons. For example, Sb 2 Se 3 seeds have been utilized during the sublimation growth of Sb 2 Se 3 , [22][23][24]…”

mentioning

confidence: 99%

Enhanced Efficiency and Stability in Sb₂S₃ Seed Layer Buffered Sb₂Se₃ Solar Cells

Aghighi

Duan

et al. 2022

Adv Materials Inter

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However, the scarcity of Te, the toxicity of Cd and Pb, and the instability of organic components in perovskite solar cells, significantly limit their sustainable and economical large-scale production. To date, the orthorhombic antimony (Sb) chalcogenides such as Sb 2 Se 3 , Sb 2 S 3 , Sb 2 (S, Se) 3 have been considered as promising light absorber materials for the next-generation solar cells with a PCE above ≈10% for Sb(S, Se) 3 . [7] The high light absorption coefficient (>10 5 cm −1 at a visible spectral range), tunable bandgap (1.10-1.30 eV), anisotropic charge transport, and long-term device stability promise antimony chalcogenides a higher PCE through systematically material and device engineering. [8,9] Moreover, Sb 2 Se 3 is very attractive in PV thanks to the abundance and less toxicity of Sb, S, and Se elements. [10][11][12] The quasi-1D crystalline structure of orthorhombic Sb 2 Se 3 , i.e., ribbon-like (Sb 4 Se 6 ) n units bonded by weak van der Waals (vdW) forces along [100] and [010] direction, provides unique photogenerated carrier transport behavior along with the ribbons and self-passivate the grain boundaries. [10,13,14] For high carrier mobility, the ribbons grew along [00l] direction is the most preferred orientation proved by theoretical calculation and experimental results since the ribbons are stacked by only vdW attraction and free from dangling bonds. [13,15] Moreover, the electron diffusion length (L e ) along [00l] direction is 1.7 µm that is higher than L e along [221] (0.3 µm). [15] However, antimony chalcogenides solar cells, particularly for the Sb 2 Se 3 solar cells still suffer the lower photovoltaic due to the high recombination sites in the interface and the deep state in the bandgap, although the overall efficiency of Sb 2 Se 3 solar cell has been increased from 2.26% to 9.2% over the last seven years. [10,[16][17][18][19][20] In addition, Sb 2 S 3 solar cells have been intensively investigated due to their wider bandgap (1.7 eV) than that of the Sb 2 Se 3 (1.2 eV); [21] however, the low photocurrent of Sb 2 S 3 becomes a challenge that needs to be further overcome.To achieve the desired carrier transportation along the nanoribbons normal to the substrate direction, it has been demonstrated that the seed layer could regulate the nucleus and grain growth for the noncubic Sb 2 Se 3 film. Particularly, a seed layer of identical crystalline material is frequently used to fabricate directional Sb 2 Se 3 nanoribbons. For example, Sb 2 Se 3 seeds have been utilized during the sublimation growth of Sb 2 Se 3 , [22][23][24]

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mentioning

confidence: 99%

Enhanced Efficiency and Stability in Sb₂S₃ Seed Layer Buffered Sb₂Se₃ Solar Cells

Aghighi

Duan

et al. 2022

Adv Materials Inter

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“…30,31 Passivating the defects of materials is a common strategy, resulting in a large lifetime and V oc . 24,32,33 To characterize the photocarrier recombination dynamics in the perovskite films, light intensity-dependent PL decays were first examined by time-resolved PL (TRPL) with TCSPC technique. The dependencies of PL decay curves are shown in Figure 2a−c, and the recombination process can be governed by the continuous equation 34…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Monomolecular recombination is related to defects that act as charge carrier trap centers, resulting in a value of k 1 that depends on the processing protocol and material quality. Bimolecular recombination is associated with band-to-band recombination of free electrons with holes, which is intrinsically impossible to avoid. , Passivating the defects of materials is a common strategy, resulting in a large lifetime and V oc . ,, …”

Section: Resultsmentioning

confidence: 99%

Charge Carrier Dynamics of Organic Cation-Treated Perovskites Probed with Time-Resolved Microwave Conductivity

Yao

Lin

2022

ACS Photonics

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Metal halide perovskites have emerged as a set of promising optoelectronic materials benefiting from their outstanding optoelectronic properties and unprecedented success in photovoltaics. Recent studies have suggested that mixing lower-dimensional A-site cations within perovskites helps mitigate this environmental and phase instability for 3D perovskites. However, the charge carrier transport properties in mixed 2D/3D perovskites are still not fully understood. In this work, charge carrier mobilities and recombination rate constants in perovskite thin films were analyzed with transient time-resolved microwave conductivity and time-resolved photoluminescence. It was found that upon large-cation treatment of 3D perovskites, charge carrier transport and radiative recombination efficiency were enhanced by the passivation of surface defects, which is evidenced by the decay dynamics of charge carriers.

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“…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.…”

Section: Introductionmentioning

confidence: 99%

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

Wang

Tang

Huang

et al. 2022

ACS Appl. Mater. Interfaces

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The TiO 2 thin film is considered as a promising wide band gap electron-transporting material. However, due to the strong Ti−O bond, it displays an inert surface characteristic causing difficulty in the adsorption and deposition of metal chalcogenide films such as Sb 2 Se 3 . In this study, a simple CdCl 2 post-treatment is conducted to functionalize the TiO 2 thin film, enabling the induction of nucleation sites and growth of highquality Sb 2 Se 3 . The interfacial treatment optimizes the conduction band offset of TiO 2 /Sb 2 Se 3 and leads to an essentially improved TiO 2 /Sb 2 Se 3 heterojunction. With this convenient interface functionalization, the power conversion efficiency of the Sb 2 Se 3 solar cell is remarkably improved from 2.02 to 6.06%. This study opens up a new avenue for the application of TiO 2 as a wide band gap electron-transporting material in antimony chalcogenide solar cells.

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Templated Growth and Passivation of Vertically Oriented Antimony Selenide Thin Films for High‐Efficiency Solar Cells in Substrate Configuration

Cited by 49 publications

References 41 publications

Enhanced Efficiency and Stability in Sb₂S₃ Seed Layer Buffered Sb₂Se₃ Solar Cells

Enhanced Efficiency and Stability in Sb₂S₃ Seed Layer Buffered Sb₂Se₃ Solar Cells

Charge Carrier Dynamics of Organic Cation-Treated Perovskites Probed with Time-Resolved Microwave Conductivity

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

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Templated Growth and Passivation of Vertically Oriented Antimony Selenide Thin Films for High‐Efficiency Solar Cells in Substrate Configuration

Cited by 49 publications

References 41 publications

Enhanced Efficiency and Stability in Sb2S3 Seed Layer Buffered Sb2Se3 Solar Cells

Enhanced Efficiency and Stability in Sb2S3 Seed Layer Buffered Sb2Se3 Solar Cells

Charge Carrier Dynamics of Organic Cation-Treated Perovskites Probed with Time-Resolved Microwave Conductivity

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

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Enhanced Efficiency and Stability in Sb₂S₃ Seed Layer Buffered Sb₂Se₃ Solar Cells

Enhanced Efficiency and Stability in Sb₂S₃ Seed Layer Buffered Sb₂Se₃ Solar Cells

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