Electronic Structure at the Interface between Rubrene and Perylenediimide Single Crystals: Impact of Interfacial Charge Transfer and its Modulation

The geometric and electronic structure of the donor-acceptor interface formed between rubrene and N,N′-1H,1H-perfluorobutyldicyanoperylene-carboxydiimide (PDIF-CN2) single crystals is investigated via a combination of molecular dynamics simulations and density functional theory calculations. Electron transfer from rubrene to PDIF-CN2 across their interface results in a vanishing bandgap and a band structure akin to that of bilayer graphene. The theoretical protocol described here can be applied to the description and design of new donor-acceptor interface systems. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.