Diamond's another puzzle solved

An international team of researchers led by Kyoto Univeristy has now seemed to solved another puzzle of the diamond material intended to be the next generation of semiconductor material.

The international team leader Nobuko Naka san of Kyoto U's Graduate School of Science claimed that: “We broke through the energy resolution limit of conventional luminescence measurements by directly observing the fine structure of bound excitons in boron-doped blue diamond, using optical absorption”

She added:"We hypothesized that, in an exciton, two positively charged holes are more strongly bound than an electron-and-hole pair," adds first author Shinya Takahashi. "This acceptor-bound exciton structure yielded two triplets separated by a spin-orbit splitting of 14.3 meV, supporting the hypothesis.

"Our results provide useful insights into spin-orbit interactions in systems beyond solid-state materials, such as atomic and nuclear physics. A deeper understanding of materials may improve the performance of diamond devices, such as light-emitting diodes, quantum emitters, and radiation detectors," notes Naka.

Indeed, that is another significant leap in the researching of the diamond semiconductor material

Salute to Nobuko Naka san and her outstanding team!

Photo source and credited to :

Highly precise optical absorption spectra of diamond reveal ultra-fine splitting
Credit: KyotoU/Nobuko Naka