Ultrathin polymeric films for interfacial passivation in wide band-gap perovskite solar cells.

ABSTRACT: Wide band-gap perovskite solar cells have the potential for a relatively high output voltage and resilience in a degradation-inducing environment. Investigating the reasons why high voltages with adequate output power have not been realized yet is an underexplored part in perovskite research although it is of paramount interest for multijunction solar cells. One reason is interfacial carrier recombination that leads to reduced carrier lifetimes and voltage loss. To further improve the V_oc of methylammonium lead tri-bromide (MAPbBr₃), that has a band-gap of 2.3 eV, interface passivation technique is an important strategy. Here we demonstrate two ultrathin passivation layers consisting of PCBM and PMMA, that can effectively passivate defects at the TiO₂/perov

SUBMITTER: Ferdowsi P 

PROVIDER: S-EPMC7746738 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature