Implementing an intermittent spin-coating strategy to enable bottom-up crystallization in layered halide perovskites.

ABSTRACT: Two-dimensional halide perovskites (2D PVSKs) have drawn tremendous attentions owing to their outstanding ambient stability. However, the random orientation of layered crystals severely impedes the out-of-plane carrier transport and limits the solar cell performance. An in-depth understanding coupled with an effective control of the crystallization in 2D PVSKs is the crux for highly efficient and durable devices. In this contribution, we accidentally discovered that the crystallization of 2D PVSKs can be effectively regulated by so-called 'intermittent spin-coating (ISC)' process. Combined analyses of in(ex)-situ grazing-incidence wide-angle X-ray scattering with time-of-flight secondary ion mass spectrometry distinguish the interface initialized bottom-up crystallization upon ISC treatmen

SUBMITTER: Yan Y 

PROVIDER: S-EPMC8593150 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature