Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Hole configurational density

HBT Device Characteristics. The HBT consists of two back-to-back n—p diodes. In the most typical configuration the emitter—base diode is forward biased, with the coUector-base diode reverse biased. Because the current ia a forward-biased n—p diode is exponentiaUy dependent on the bias, smaU changes ia the emitter-base voltage result ia large changes ia the emitter current. The current across the emitter-base junction is a combination of the electrons iajected iato the base and the holes iajected iato the emitter. If the diode was semi-infinite to each side, the electron current density,/, could be expressed as foUows (44), where q is the electron charge, Vis the bias across the diode, kT... [Pg.374]

In Eq. (6) q> is the number of cell-hole pairs for a given molecule and R is the phase volume. These relationships enable us to determine the limiting form of the configuration integral for high (8) and low (9) densities ... [Pg.65]

Another factor is that the configuration 3dw4s has a spherically symmetrical distribution of electron density, a stabilizing arrangement characteristic of all filled or half-filled subshells. On the other hand, the configuration 3d 4s2 has a hole (a missing electron) in the 3d subshell, destroying the symmetry and any extra stabilization. [Pg.125]

See other pages where Hole configurational density is mentioned: [Pg.3]    [Pg.153]    [Pg.194]    [Pg.351]    [Pg.513]    [Pg.356]    [Pg.226]    [Pg.83]    [Pg.97]    [Pg.169]    [Pg.338]    [Pg.164]    [Pg.386]    [Pg.311]    [Pg.381]    [Pg.298]    [Pg.3]    [Pg.6]    [Pg.228]    [Pg.128]    [Pg.597]    [Pg.21]    [Pg.117]    [Pg.523]    [Pg.66]    [Pg.80]    [Pg.218]    [Pg.10]    [Pg.26]    [Pg.273]    [Pg.137]    [Pg.212]    [Pg.8]    [Pg.7]    [Pg.36]    [Pg.319]    [Pg.212]    [Pg.87]    [Pg.332]    [Pg.271]    [Pg.368]    [Pg.923]    [Pg.459]    [Pg.421]    [Pg.560]    [Pg.873]   
See also in sourсe #XX -- [ Pg.177 ]



SEARCH



Hole density

© 2024 chempedia.info