Goals & Hypothesis

The EASI project proposes the assemble of a solar cell device containing simultaneously two types of light harvester materials forming a heterojunction.Specifically, EASI proposes to use hybrid halide perovskite and AgBiS2 nanocrystals.The goal is to extended absorption and improve performance compared to devices including solely one type of these light harvesters.


It is expected that the better absorptivity coefficient of AgBiS2 nanocrystals compared to perovskite and its extended to infrared radiation absorption would lead to obtain devices with increased external quantum efficiency beyond 800 nm wavelength also taking advantage of the optimum energy band matching between both materials. Moreover, it has been described that the introduction of nanocrystals in perovskite-based solar cells increases their stability and hence lifetime.