Projected Range and Sputter Yield of Ne+ and Ar+ in the Sputtering of Lead and Tin Perovskites
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Metal halide perovskites have been the subject of intense theoretical and
experimental research in recent years due to their huge potential over their silicon based
counterparts for tunable optoelectronic applications in high-tech device innovation. The current
best perovskite for solar cell applications, with a power conversion efficiency of 22%, methyl
ammonium lead iodide (CH3NH3PbI3), is toxic due to the presence of lead and is therefore
harmful in solar cell applications despite its low concentration in solar cells. Hence, research
exploits are geared towards perovskites without lead. Unfortunately, this has taken back the
gains in PCEs by about 15%, and a lot is being done for improvement. In this paper, we
performed molecular dynamics and Monte Carlo simulations of ion-beam sputtering of lead
and tin perovskites to determine differences between the sputtering characteristics of lead
perovskite and a lead-substituted perovskite (tin perovskite). Our results show that they both
exhibit similar sputtering characteristics of linear projected ion range, and maximum yield
around 78° ion incidence.
Keywords
Q Science (General), QC Physics