1, the principle is different

Photoelectricity diode is the semiconductor that use can take theory, when diode of smooth illuminate photoelectricity, when smooth energy is more than belt unoccupied place energy, the electron that valence electron takes is led campaign by incentive guide, original valence electron leaves hole. Reach depletion layer to produce an electron in P area, N area so – hole is right. Move quickly to P area to N area, cavity in the electron below action of depletion layer electric field, such making P area carries positive electricity, n area carries negaive electricity, move to the electrode direction of the other side severally (drift) , produced electricity so. Undertake detecting to this electric current next, can get smooth information, perhaps undertake enlarge to this electric current again, with will generate electricity, this is a solar battery.

 

 

The times principle that adds a canal basically has photoelectricity two: Photoemission and 2 electrons launch theory. Above all photoemission, everybody understands, become namely light is incident arrive when alkali metal surface, can the electron is given off, when electronic kinetic energy exceeds the transgression result of alkali metal, can escape metallic surface, if use very acute galvanometer,can explore voltaic signal at this moment. The 2nd is enlarge, escape the electron that go out is in through times add extremely 2 enlarge, can make voltaic signal increases ceaselessly, a bigger voltaic signal is outputted in positive pole finally. With photoelectricity the times contrast that add a canal looks, photoelectricity times add a canal to be able to produce electric current to still can undertake enlarge to electric current not only, the principle of electric current of both nevertheless generation is completely different.

 

2, applied range is distinct

The place that always uses faint light to explore uses photoelectricity commonly times add a canal, for instance camera of a few gamma, the exploration of radiative source, etc. And the application of photoelectricity diode is explained simply already in the principle.

 

3, manufacturer home

Photoelectricity diode is a kind of very common photoelectricity yuan parts of an apparatus, manufacturer home is very accordingly much, can Baidu, can be photoelectricity the times manufacturing manufacturer that adds a canal very special little, the photoelectricity of the whole world times adding a canal basically is to a company produces: Of Japan bank loose photon, if you do photoelectricity to detect, should be not Changshu all to this company, next British Photonis, nevertheless, this company has been after financial crisis stop production.

 

 

Photoelectricity diode

Photoelectricity diode (Photo-Diode) with common diode, also be the semiconductor device that comprises by knot of a PN, also have character of report of home remedy guide. But in circuit it is not to make rectification component, the parts of an apparatus of smooth telex feeling that changes smooth signal into telegraphic date however.

 

Photoelectricity times add a canal

Photoelectricity times adding a canal is the vacuum electronic parts that changes faint smooth signal into telegraphic date. Photoelectricity times add a canal to be used in optics to measure instrument and spectrometer implement in. The power of extremely faint radiate that it can measure rice of wavelengh 200~1200 accept in feebleminded class photometry and spectroscopy respect. Twinkle the occurrence of tally, enlarged photoelectricity the times applied scope that increases a canal.