Abstract:We describe the emergence of photocapacitance in two-dimensional layered nanocrystal assemblies. Devices are electrically probed by the application of a lateral bias across interdigitated electrodes. We observe capacitive current−voltage characteristics that are individually absent in the nanocrystals. Besides the occurrence of a large zero-bias capacitance, the assemblies further show a transient negative capacitive behavior where the small signal capacitance is found to attain values over a ±100 nF range. We… Show more
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.