Title
Perovskite empire in micro-cenote
Technique
SEM Quanta 650 FEG
Description
In an attempt of forming a uniform thin film of Cs2AgBiBr3 halide double perovskite for our solar cells, we took a closer look of our sample. To our surprise, we found that a micro natural wonder was created, a Mexican cenote. This one seems to have the ruins of an ancient civilisation in it. What misteries will we find with further magnification?

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Technical specifications
HV: 10 kV, magnification: 4000x , WD: 10mm, Mode: secondary electrons.
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