Elemental Semiconductors: They are single elemental Semiconductors.They belong to the IV group of the Periodic Table. Example: Si,Ge,C,Sn. Compound Semiconductors: They are formed by using two or more elements.they are synthesized using elements from groups II through VI of the periodic table, e.g. from group III and V (III-V compounds) or II and VI (II-VI compounds). EXAMPLE: III-V semiconductors:GaAs, GaP, GaN, GaAlAs, InP, InSb, etc. II-VI semiconductors:CdSe, CdTe, CdHgTe, ZnS.
A semiconductor's resistivity decreases with increasing temperature. A metal's resistivity increases with increasing temperature.
In step-graded the acceptor and donor concentrations in the semiconductor are constants up to the junction.In a linearly-graded junction, impurity concentration varies linearly with distance from the junction
A p-n junction (or a metal-semiconductor junction) with rectifying behaviour is an electronic device which allows a one-way only current flow (between the two semiconductor regions, or between the metal and the semiconductor). An ohmic contact in a metal-semiconductor junction is realized by lowering the potential barrier (allowing electrons to easily migrate into the metal) and by increasing the doping levels in the semiconductor (more than 10^18 cm^-3): this way the potential barrier, that should stop electrons from migrating into the semiconductor, is confined in a very small region making it possible for electrons with low energy to pass through it (tunneling effect). This means that in a ohmic contact current can flow both ways; such a device apparently works like a resistor with a low resistance, hence the "ohmic contact" name.
LEDs, known as light emitting diodes, are comprised of two lead semiconductor light sources. Laser transmitters, also known as laser diodes are comprised of an electrically charged semiconductor laser.
We use semiconductors instead of conductors and insulators by changing their properties because the properties of a semiconductor lies between that of a good insulator ant that of a good conductor. Any of the materials obtained depends on the level of doping.
non-iodized salt is a chemical compound composed of sodium and chlorinemagnesium is an elemental metal and highly flammable
A semiconductor's resistivity decreases with increasing temperature. A metal's resistivity increases with increasing temperature.
A semiconductor is a device which is neither a Insulator nor a conductor. They behave like one in the right conditions.
Actually material which are having conductivity between metals and insulators. Elemental Semiconductor:- They are single elemental semiconductors. And they belong to the group IV of the periodic table. Ex:- Si, Ge, Sn etc... Compound Semiconductors:- They are formed by using two or more elements. they are synthesized using elements from group II - IV & group III - V.
the difference between a molecule and a compound is the spelling.
difference between an annuity and a compound annuity?Read more: What_is_the_primary_difference_between_an_annuity_and_a_compound_annuity
NPN and PNP are transistor types. The difference in the way the layers of semiconductor material are doped with impurities.
a compound is more then one element
a compound is a mixture of elements. that is the difference
What is the connection between a metaloid and a semiconductor
none
A difference of quality; the pure chemical compound is a refined compound, having a very low concentration of impurities.