Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 12, Issue 17, Pages 19495-19503Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c01732
Keywords
triple-cation perovskite; photoluminescence; SSPG; transport properties; aging influences
Funding
- French Government [ANRIEED-002-01]
- European Union's Horizon 2020 research and innovation program under the Marie Sklodowoska-Curie Grant [845612]
- Marie Curie Actions (MSCA) [845612] Funding Source: Marie Curie Actions (MSCA)
Ask authors/readers for more resources
In this work, we study the transport properties of triple-cation halide perovskite thin films and their evolution when exposed to air or vacuum and after light-soaking. Transport parameters were investigated by steady-state dark and photocurrent methods as well as by the steady-state photocarrier grating experiment (SSPG) from which the ambipolar diffusion length of thin film materials is estimated. Combined with other characterization measurements, such as photoluminescence and Fourier transform photocurrent spectroscopy, these techniques demonstrate that air plays an important role in the passivation of the surface trap states of the perovskite films. The competition between passivation and degradation of the films under light-soaking was also deeply investigated. Moreover, we show that the degradation of the transport parameters upon light-soaking could be linked mainly to a degradation of the carrier mobility instead of their lifetime.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available