The effect of perovskite on photopolymerization reaction of photocurable resin for plastic scintillators by stereolithography

Abstract Stereolithography is one of the most popular additive manufacturing techniques that produces 3D objects by photopolymerizing photocurable liquid formulations. Modification of resin formulations used in SLA using fillers can add improved or specific functional properties to the 3D-printed object. In this work, the curing process of photocurable formulations of a commercial resin material for SLA, both before and after the inclusion of light-sensitive inorganic lead halide perovskites such as CsPbBr 3 and Cs 4 PbBr 6 , was investigated in greater depth through thermal analysis, in order to assess the suitability of the developed formulations to be used for the production of 3D-printed plastic scintillators. The photopolymerization of the resin material is not obstructed in the presence of the perovskite fillers. Also, the addition of Cs 4 PbBr 6 filler has been observed to improve the photopolymerization of the resin as evident from the combination of photodifferential scanning calorimetry (p-DSC) and thermal dynamic second DSC scan. FTIR results showed that the Cs 4 PbBr 6 does not interfere with the photopolymerization reaction. In addition, aging tests showed that the thermal degradation of the resin was unchanged with the addition of the fillers and the presence of filler does not have any considerable effect on the aging of resin in air and water.