Abstract
We have introduced centrifugally-cast thin-film formation technique to 2D transition metal dichalcogenides (TMDs) formed through a liquid based exfoliation method. The film-formation technique has evidenced a growth of uniform and homogeneous thin-films of single or a-few-layered MoS2; the thin-films have been introduced as a charge-transport layer in perovskite solar cells. From scanning tunneling spectroscopy and thereof the density of states of the 2D semiconductor, we have observed that the band-edges of MoS2 formed a type-II band-alignment with the commonly-used organic-inorganic lead halide (CH3NH3PbI3) perovskite when the 2D material was subjected to an ozone-treatment. We thereafter formed p–i–n heterojunction planar perovskite solar cells with the thin-film of 2H-MoS2 so that charge separation can occur at the MoS2|perovskite interface. In this work, we also report device characteristics and impedance spectroscopy of the heterojunctions, which were optimized for a small series-resistance and a large shunt-resistance.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
