Journal
ENERGY & ENVIRONMENTAL SCIENCE
Volume 9, Issue 5, Pages 1655-1660Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ee00409a
Keywords
-
Funding
- Engineering and Physical Sciences Research Council (EPSRC) [EP/M023532/1, EP/K010298/1]
- European Community [308997]
- EPSRC [EP/M023532/1, EP/IO19278/1]
- Welsh Assembly government
- EPSRC [EP/K010298/1, EP/K030671/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K030671/1, EP/K010298/1, 1565500, 1231067, EP/M023532/1, 2050414] Funding Source: researchfish
Ask authors/readers for more resources
Here, we demonstrate that light and oxygen-induced degradation is the main reason for the low operational stability of methylammonium lead triiodide (MeNH3PbI3) perovskite solar cells exposed to ambient conditions. When exposed to both light and dry air, unencapsulated MeNH3PbI3 solar cells rapidly degrade on timescales of minutes to a few hours. This rapid degradation is also observed under electrically bias driven current flow in the dark in the presence of O-2. In contrast, significantly slower degradation is observed when the MeNH3PbI3 devices are exposed to moisture alone (e.g. 85% relative humidity in N-2). We show that this light and oxygen induced degradation can be slowed down by the use of interlayers that are able to remove electrons from the perovskite film before they can react with oxygen to form O-2(-). These observations demonstrate that the operational stability of electronic and optoelectronic devices that exploit the electron transporting properties of MeNH3PbI3 will be critically dependent upon the use of suitable barrier layers and device configurations to mitigate the oxygen sensitivity of this remarkable material.
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