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内容記述 |
Recent advances in visible light photodetectors (PDs) marked a substantial shift towards improving their performance in harsh environments, ensuring stability in high temperatures, strong radiation, environmental corrosion, and shock impacts. In light of the superior material properties like high thermal conductivity (22 W/cmK), radiation hardness (>10 MGy), and corrosion resistance in contrast with conventional PD materials, single crystalline diamonds (SCDs) exhibit its potential for employment in harsh environments. However, its large bandgap (5.47 eV) and conflicting impurity activation towards visible energies and elevated temperatures, limit their visible energy detection capabilities. Also, the brittleness of conventional interface carbide forming ohmic contacts damper the device's performance. This study proposes a promising mechanism to enhance the visible light sensing of nitrogen-doped SCD-based visible light PDs by enhancing the nitrogen vacancy (NV) center density in the photoabsorption medium. Moreover, a harsh environment-immune all-carbon PD device structure is introduced by synchronizing highly interface-stable interdigitated nanocarbon ohmic contacts with N-doped diamond. |
