SUMMARY
Surface potential is the electrostatic potential energy associated with confined charges at a surface, measurable using a Kelvin Probe Microscope. The work function, which indicates the energy required for electrons to escape from a material's surface, varies with material inhomogeneities. In regions of negative surface potential, electrons are confined, while holes are found in areas of positive surface potential. Free holes in hole transport semiconductors are more likely to be trapped in regions with a higher work function, correlating with higher surface potential.
PREREQUISITES
- Understanding of surface potential and electrostatic principles
- Familiarity with Kelvin Probe Microscopy techniques
- Knowledge of work function and its implications in semiconductor physics
- Concepts of hole transport in semiconductors
NEXT STEPS
- Research the principles of Kelvin Probe Microscopy and its applications in material science
- Study the relationship between work function and surface potential in various materials
- Explore the mechanisms of hole transport in semiconductors and their implications for device performance
- Investigate the effects of material inhomogeneities on electronic properties
USEFUL FOR
Material scientists, semiconductor physicists, and engineers involved in the development and optimization of electronic devices.
surface potential is defined as the electrostatic potential energy of a surface confined charges. By Kelvin probe microscope, the the surface potential can be measured and the variation from negative to positive can be seen at different region on the interface.