space-charge region
71Thermionic emission — Closeup of the filament on a low pressure mercury gas discharge lamp showing white thermionic emission mix coating on the central portion of the coil. Typically made of a mixture of barium, strontium and calcium oxides, the coating is sputtered… …
72Nanoionics — Part of a series of articles on Nanoelectronics Single molecule electronics …
73Tetrode — A tetrode is an electronic device having four active electrodes. The term most commonly applies to a two grid vacuum tube. It has the three electrodes of a triode and an additional screen grid which significantly changes its behaviour. Grids The… …
74Transistor — For other uses, see Transistor (disambiguation). Assorted discrete transistors. Packages in order from top to bottom: TO 3, TO 126, TO 92, SOT 23 A transistor is a semiconductor device used to amplify and switch electronic signals and power. It… …
75Thermionic converter — A thermionic converter consists of a hot electrode which thermionically emits electrons over a potential energy barrier to a cooler electrode, producing a useful electric power output. Caesium vapor is used to optimize the electrode work… …
76Brevard County, Florida — Infobox U.S. County county = Brevard County state = Florida founded = March 14, 1844 seat = Titusville | area total sq mi =1557 area land sq mi =1018 area water sq mi =539 area percentage = 34.60% census yr = 2000 pop = 476230 density km2 = 181… …
77Electron beam lithography — (often abbreviated as e beam lithography) is the practice of scanning a beam of electrons in a patterned fashion across a surface covered with a film (called the resist),cite book |last= McCord |first=M. A. |coauthors=M. J. Rooks |title=… …
78sheath — sheathless, adj. sheathlike, sheathy, adj. /sheeth/, n., pl. sheaths /sheedhz/, v. n. 1. a case or covering for the blade of a sword, dagger, or the like. 2. any similar close fitting covering or case. 3. a condom. 4. Biol. a closely enveloping… …
79Avalanche photodiode — Avalanche photodiodes (APDs) are photodetectors that can be regarded as the semiconductor analog to photomultipliers. By applying a high reverse bias voltage (typically 100 200 V in silicon), APDs show an internal current gain effect (around 100) …
80Surface photovoltage — (SPV) measurements are a widely used method to determine the minority carrier diffusion length of semiconductors. Since the transport of minority carriers determines the behavior of the p n junctions that are ubiquitous in semiconductor devices,… …
