Timeline for Why does a single-photon avalanche diode (SPAD) need to be a diode?
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 30, 2023 at 23:32 | history | became hot network question | |||
| Jun 30, 2023 at 15:42 | vote | accept | flevinBombastus | ||
| Jun 30, 2023 at 15:38 | comment | added | Jon Custer | There are other devices (wire chambers, Geiger counters, etc.) that act more along the lines you are thinking, so while a detector does not have to be a diode, a SPAD is a diode implementation of one. | |
| Jun 30, 2023 at 15:35 | comment | added | flevinBombastus | I understand. My question is, why is it important that it be a junction with high reverse-bias, as opposed to any old piece of silicon or something that you put a big electric field on? | |
| Jun 30, 2023 at 15:33 | answer | added | John Doty | timeline score: 5 | |
| Jun 30, 2023 at 15:32 | comment | added | Jon Custer | Well, they are reverse biased p-n junctions - Wikipedia even states "SPADs are semiconductor devices based on a p–n junction reverse-biased at an operating voltage that exceeds the junctions breakdown voltage". | |
| Jun 30, 2023 at 15:27 | history | asked | flevinBombastus | CC BY-SA 4.0 |