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
Rok vydání: 2021
Předmět:
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