Controllable Solution-Phase Epitaxial Growth of Q1D Sb2 (S,Se)3 /CdS Heterojunction Solar Cell with 9.2% Efficiency
© 2021 Wiley-VCH GmbH.
| Veröffentlicht in: | Advanced materials (Deerfield Beach, Fla.). - 1998. - 33(2021), 44 vom: 30. Nov., Seite e2104346 |
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| Weitere Verfasser: | , , , , , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2021
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| Zugriff auf das übergeordnete Werk: | Advanced materials (Deerfield Beach, Fla.) |
| Schlagworte: | Journal Article 1D heterostructures Sb2(S Se)3 thin film solar cells hydrothermal method vertical growth |
| Zusammenfassung: | © 2021 Wiley-VCH GmbH. Antimony sulfoselenide (Sb2 (S,Se)3 ) is a promising photoabsorber for stable and high efficiency thin film photovoltaics (PV). The unique quasi-1D (Q1D) crystal structure gives Sb2 (S,Se)3 intriguing anisotropic optoelectronic properties, which intrinsically require the optimization of crystal growth orientation, especially for electronic devices with vertical charge transport such as solar cells. Although the efficiency of Sb2 (S,Se)3 solar cells has been improved greatly through optimizing the material quality, the fundamental issue of crystal orientation control in polycrystalline films remains unsolved, resulting in charge carrier recombination losses in the device. Herein, the epitaxial growth of vertically-oriented Sb2 (S,Se)3 film on hexagonal CdS is successfully realized via a solution-based synergistic crystal growth process. The crystallographic orientation relationship between Sb2 (S,Se)3 light absorber and the CdS substrate has been rigorously investigated. The best performing Sb2 (S,Se)3 solar cell shows a high power conversion efficiency of 9.2% owing to the faster charge transport in the bulk and the efficient charge extraction across the heterojunction. This study points to a new direction to control the crystal growth of mixed-anion Sb2 (S,Se)3 , which is crucial to achieve high efficiency solar cells based on antimony chalcogenides with low dimensionality |
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| Beschreibung: | Date Revised 01.11.2021 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
| ISSN: | 1521-4095 |
| DOI: | 10.1002/adma.202104346 |