InSe/Te van der Waals Heterostructure as a High-Efficiency Solar Cell from Computational Screening
| Autor: | Yinggan Zhang, Baisheng Sa, Rui Xiong, Cuilian Wen, Li Ruifeng, Zechen Ma, Chao Xu |
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| Rok vydání: | 2021 |
| Předmět: |
Technology
Materials science Band gap 02 engineering and technology 010402 general chemistry 01 natural sciences Molecular physics Article law.invention symbols.namesake law Monolayer Solar cell General Materials Science Electronic band structure van der Waals heterostructure Microscopy QC120-168.85 QH201-278.5 Energy conversion efficiency Heterojunction first-principle calculations Engineering (General). Civil engineering (General) 021001 nanoscience & nanotechnology TK1-9971 0104 chemical sciences solar cell Descriptive and experimental mechanics InSe symbols Direct and indirect band gaps Electrical engineering. Electronics. Nuclear engineering TA1-2040 van der Waals force tellurene 0210 nano-technology |
| Zdroj: | Materials Volume 14 Issue 14 Materials, Vol 14, Iss 3768, p 3768 (2021) |
| ISSN: | 1996-1944 |
| Popis: | Designing the electronic structures of the van der Waals (vdW) heterostructures to obtain high-efficiency solar cells showed a fascinating prospect. In this work, we screened the potential of vdW heterostructures for solar cell application by combining the group III–VI MXA (M = Al, Ga, In and XA = S, Se, Te) and elementary group VI XB (XB = Se, Te) monolayers based on first-principle calculations. The results highlight that InSe/Te vdW heterostructure presents type-II electronic band structure feature with a band gap of 0.88 eV, where tellurene and InSe monolayer are as absorber and window layer, respectively. Interestingly, tellurene has a 1.14 eV direct band gap to produce the photoexcited electron easily. Furthermore, InSe/Te vdW heterostructure shows remarkably light absorption capacities and distinguished maximum power conversion efficiency (PCE) up to 13.39%. Our present study will inspire researchers to design vdW heterostructures for solar cell application in a purposeful way. |
| Databáze: | OpenAIRE |
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