Explanations about a principle of diode presented in university physics textbooks.
Category | Contents | General Physics | Modern Physics | ||||||
---|---|---|---|---|---|---|---|---|---|
G1 | G2 | G3 | G4 | M1 | M2 | M3 | M4 | ||
Description | Explain the movement of electrons and holes by an electric field caused by an external voltage | ○ | × | × | × | × | × | ○ | × |
Explain a depletion region appearing at the PN junction | ○ | ○ | ○ | ○ | × | ○ | × | ○ | |
Explain the potential difference in the PN junction when an external voltage is not applied | ○ | ○ | ○ | ○ | ○ | ○ | × | ○ | |
Explain an electric field appearing at the PN junction | × | × | ○ | ○ | × | ○ | × | × | |
Explain the potential change of the pn junction when an external voltage is applied | × | ○ | ○ | ○ | ○ | ○ | × | ○ | |
Explanation of the two types of current (diffusion current, drift current) | × | ○ | × | ○ | ○ | ○ | ○ | △ | |
Explanation of changes in the width of the depletion region according to the external voltage | × | ○ | × | × | × | ○ | × | × | |
Explain that the most of the voltage is applied to the depletion region | × | △ | × | △ | × | × | × | △ | |
Explain that a small amount of current flows even in reverse voltage | ○ | × | ○ | ○ | ○ | ○ | ○ | ○ | |
Explanation of the sudden flow of current when a large reverse voltage is applied | ○ | × | × | ○ | × | × | ○ | ○ | |
Illustration | Expression of depletion region | × | ○ | ○ | × | × | ○ | × | ○ |
Expression of minority carrior | ○ | × | ○ | × | ○ | × | ○ | ○ | |
Placing the depletion region and the potential graph together | × | ○ | ○ | × | × | × | × | × | |
Presenting the band model according to the pn junction | × | × | × | ○ | ○ | ○ | × | ○ |