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Mayan Fung
- 131
- 14
I am working on some research on solar cells which prefer a direct bandgap then an indirect one for the light-harvesting layer. In many works of literature, people present some measurements to tell whether the material has a direct/indirect bandgap. However, is there any criteria for a preliminary estimation on the bandgap of a material? Or in other words, is there any theory-based guess that we can make other than a simulation, eg DFT?