Thermal degradation of lead halide perovskite surfaces

• Commercial use of lead halide perovskites requires improved thermal stability and therefore a better understanding of their degradation mechanisms. The thermal degradation of three clean perovskite single crystal surfaces (MAPbI3, MAPbBr3, FAPbBr3) was investigated using synchrotron-based photoelectron spectroscopy. Central findings are that the halide has a large impact on thermal stability and that the degradation of formamidnium results in the formation of a new organic species at the FAPbBr3 crystal surface. 

Ämnesord

NATURVETENSKAP  -- Kemi -- Fysikalisk kemi (hsv//swe)

NATURAL SCIENCES  -- Chemical Sciences -- Physical Chemistry (hsv//eng)

NATURVETENSKAP  -- Kemi -- Materialkemi (hsv//swe)

NATURAL SCIENCES  -- Chemical Sciences -- Materials Chemistry (hsv//eng)

Nyckelord

Degradation

Lead compounds

Photoelectron spectroscopy

Single crystals

Thermodynamic stability

Commercial use

Crystal surfaces

Degradation mechanism

Halide perovskites

Organic species

Single-crystal surfaces

Thermal degradation'

Perovskite

amidine

bromine

formamidnium

halide

iodine

lead

nitrogen

unclassified drug

Article

crystal structure

heating

thermostability

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)