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Books > Professional & Technical > Electronics & communications engineering > Electronics engineering > Electronic devices & materials > Semi-conductors & super-conductors
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Molecular Semiconductors - Photoelectrical Properties and Solar Cells (Paperback, Softcover reprint of the original 1st ed. 1985)
Loot Price: R1,512
Discovery Miles 15 120
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Molecular Semiconductors - Photoelectrical Properties and Solar Cells (Paperback, Softcover reprint of the original 1st ed. 1985)
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During the past thirty years considerable efforts have been made to
design the synthesis and the study of molecular semiconductors.
Molecular semiconductors - and more generally molecular materials -
involve interactions between individual subunits which can be
separately synthesized. Organic and metallo-organic derivatives are
the basis of most of the molecular materials. A survey of the
literature on molecular semiconductors leaves one rather confused.
It does seem to be very difficult to correlate the molecular
structure of these semiconductors with their experimental
electrical properties. For inorganic materials a simple definition
delimits a fairly homogeneous family. If an inorganic material has
a conductivity intermediate between that of an 12 1 1 3 1 1
insulator " 10- n- cm- ) and that of a metal (> 10 n- cm- ),
then it is a semiconductor and will exhibit the characteristic
properties of this family, such as junction formation,
photoconductivity, and the photovoltaic effect. For molecular
compounds, such simplicity is certainly not the case. A huge number
of molecular and macromolecular systems have been described which
possess an intermediate conductivity. However, the various attempts
which have been made to rationalize their properties have, more
often than not, failed. Even very basic electrical properties such
as the mechanism of the charge carrier formation or the nature and
the density ofthe dopants are not known in detail. The study of
molecular semiconductor junctions is very probably the most
powerful approach to shed light on these problems.
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