Small changes in isotopic content of 2D semiconductors influence optical and electronic properties, enabling design of new applications

https://phys.org/news/2024-05-tweaking-isotopes-approach-semiconductors.html

"precise control changing physical, chemical, technological properties... grew isotopically pure molybdenum disulfide using molybdenum atoms of different masses, causing small shifts in light emitted by crystals under photoexcitation... substituted heavier molybdenum isotope in crystal, enabling creating optoelectronic solar cells, photodetectors, computers... scattering shifts bandgap to red for heavier isotopes... adjusting bandgap enables different colors, essential for designing new devices"