Cesium carbonate (Cs2CO3, Aldrich, 99.9%), formamidinium acetate (Sigma-Aldrich,
99.9%), lead bromide (PbBr2, ABCR, 98%), lead iodide (PbI2, ABCR, 99.999%), 1-octadecene (90%), oleic acid (Sigma-Aldrich,
90%), and oleylamine (Acros, ≥ 96%) were used as the reagents.
Galden PFPE fluid was purchased from Blaser Swisslube AG. Patterned
indium tin oxide (ITO)-covered glass substrates were purchased from
Lumtech. The hole injection material PEDOT:PSS was purchased from
Heraeus (CLEVIOS VP AI 4083), while the hole transport material poly-TPD
was procured from Lumtech and the electron transport material TPBi
was supplied by e-Ray Optoelectronics. The electron injection material
LiF was purchased from Acros Organics, and Al pellets were purchased
from Kurt J. Lesker Co. Ltd. TOPAS polymer (cyclic olefin copolymer)
was received from TOPAS Advanced Polymers GmbH. All the materials
for LED production were used as received without any further purification.
99.9%), lead bromide (PbBr2, ABCR, 98%), lead iodide (PbI2, ABCR, 99.999%), 1-octadecene (90%), oleic acid (Sigma-Aldrich,
90%), and oleylamine (Acros, ≥ 96%) were used as the reagents.
Galden PFPE fluid was purchased from Blaser Swisslube AG. Patterned
indium tin oxide (ITO)-covered glass substrates were purchased from
Lumtech. The hole injection material PEDOT:PSS was purchased from
Heraeus (CLEVIOS VP AI 4083), while the hole transport material poly-TPD
was procured from Lumtech and the electron transport material TPBi
was supplied by e-Ray Optoelectronics. The electron injection material
LiF was purchased from Acros Organics, and Al pellets were purchased
from Kurt J. Lesker Co. Ltd. TOPAS polymer (cyclic olefin copolymer)
was received from TOPAS Advanced Polymers GmbH. All the materials
for LED production were used as received without any further purification.