The electrical and optical characteristics of indium-doped Se 2Sb2Te6 phase-change alloy are studied in this paper. It is found that adding indium to Se2Sb2Te 6 alloy increases its amorphous-crystalline transition temperature, TC, and reduces the electrical conduction activation energy. The capacitance-temperature measurements showed a drastic change in the capacitance of the modified film as the temperature approaches TC and eventually the capacitance becomes negative and nonlinear. The negativity and nonlinearity in the capacitance-voltage dependence can be attributed to the growth of conductive crystalline islands with increasing temperature.
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Mathematical Physics
- Condensed Matter Physics