Probing charge transfer in 2D MoS2/tellurene type-II p–n heterojunctions
Autor: | Kunyan Zhang, Basant Chitara, Fei Yan, Tej B. Limbu, Shengxi Huang, Bikram Adhikari, Martha Y. Garcia Cervantes |
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Rok vydání: | 2021 |
Předmět: |
Kelvin probe force microscope
Range (particle radiation) Materials science Photoluminescence business.industry Heterojunction 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 7. Clean energy 0104 chemical sciences symbols.namesake Monolayer Microscopy symbols Optoelectronics General Materials Science 0210 nano-technology business Raman spectroscopy Spectroscopy |
Zdroj: | MRS Communications. 11:868-872 |
ISSN: | 2159-6867 2159-6859 |
DOI: | 10.1557/s43579-021-00117-w |
Popis: | 2D heterostructures offer new opportunities for harnessing a wider range of the solar spectrum in high-performance photovoltaic devices. Here, we explore a type-II p–n heterojunction, by exploiting air-stable tellurene (Te) in combination with MoS2, to study its charge transfer for photovoltaic applications. The charge transfer of MoS2/Te heterojunction is confirmed by photoluminescence spectroscopy, Raman spectroscopy and Kelvin probe force microscopy. The exciton binding energy for MoS2/Te heterojunction is estimated to be around 10 meV, which is much lower than that for monolayer MoS2. This strategy can be exploited to develop next-generation intrinsically ultrathin light-harvesting devices. |
Databáze: | OpenAIRE |
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