Assertion: silicon's bandgap | /r/HasProperty | depend on halide content
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Source sentences:
text: The most commonly studied perovskite absorber is methylammonium lead trihalide (CH 3 NH 3 PbX 3 , where X is a halogen ion such as iodide, bromide or chloride), with an optical bandgap between ~1.55 and 2.3 eV depending on halide content.