Diodes photodiodes

The silicon diode (photodiode) detector consists of a strip of p-type silicon on the surface of a silicon chip (n-type silicon). By application of a biasing potential with the silicon chip connected to the positive pole of the biasing source, electrons and holes are caused to move away from the p-n junction. This creates a depletion region in the neighbourhood of the junction which in effect becomes a capacitor. When light strikes the surface of the chip, free... 

NS Sariciftci, D Braun, C Zhang, VI Srdanov, AJ Heeger, and F Wudl, Semiconducting polymer-buckminsterfullerene heterojunctions diodes, photodiodes and photovoltaic cells, Appl. Phys. Lett., 62 585-587, 1993. 

Figure 7 Schematic diagrams of a trench structure carved in a p-n diode (a) side view of the trench structure that illustrates how hght is produced by tlie forward-biased diode (LED) and detected by the reverse-biased diode (photodiode) (b) top view of these LED/ photodiode pairs on a wafer. (Adapted from Ref. 14.)...

Sariciftci NS, Braun D, Zhang C, Srdanov VI, Heeger AJ, Stucky G, Wudl F (1993) Semiconducting polymer-buckminsterfullerene heterojunctions diodes, photodiodes, and photovoltaic cells. Appl Phys Lett 62 585... 

Nanocomposites are multiphased materials with at least one phase in the nanometer range. The mechanical, electrical, thermal, optical and electrochemical properties of nanocomposites are different from that of component materials. Nanocomposites have potential applications in almost every field of the modern day scenario. They play a key role in tailoring properties to suit any technology and have potential applications like light-emitting diodes, photodiodes, photovoltaic cells, smart microelectronic devices, gas sensors, etc. 

Thus at present a wide range of polymer-based devices, such as light emitting diodes, photodiodes, solar cells, gas sensors, field effect transistors, exists which have been developed and intensively studied in research groups and R D centers all over the world, some of which are even produced commercially in pilot scale series [5]. 

Photovoltaic detector (detector with p-n junction, PV detector, photovoltaic) Photoexcitation creates an electron-hole pair to be separated at the p-n junction, thus generating photocurrent. In dependence on the structure type and the junction used it may belong to a number of the existing types with homojunction or heterojunction, p-i-n photodiode. Camel s diode (photodiode with modulated barrier), avalanche photodiode (APD), bipolar phototransistor (floating-base), etc. 

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