Application of automatic production techniques to the fabrication
of semiconductor devices has been somewhat limited by the requirements
of conventional alloying techniques. These alloying techniques
require an excessive amount of individual handling.
This thesis investigates the feasibility of applying percussive
welding to the fabrication of metal-semiconductor contacts, as a
solution...
A non-volatile electrically alterable read-only memory using
an MOS field effect transistor with a threshold voltage which depended
upon the position of ionic charges for its memory was fabricated.
The conventional silicon dioxide layer was replaced by a composite
layer consisting of thermal silicon dioxide, electron beam
evaporated aluminum oxide,...
This thesis reports on the crystal growth, fabrication,
modeling and performance of Graded Index-Separate Confinement
Heterostructure laser diodes which contain pseudomorphic InGaAs as the
active region material. Laser epitaxial layers were grown with
different indium mole-fractions, and a constant InGaAs layer thickness
of 10 nm, on both sides of the...
Organic semiconductors are a promising alternative to the traditional inorganic semiconductors, such as silicon. Organics are solution-processable, low-cost, sustainable, and have interesting optoelectronic properties. One such property is the formation of exciton-polaritons, quantum quasi-particles formed by an electron-hole pair in the semiconductor and a photon. This process can be induced...
Organic semiconducting materials have emerged in the last few decades as viable alternatives to inorganics in broad applications from field effect transistors to LEDs to solar cells. Organics provide many benefits over inorganics such as flexibility, sustainability, and reduced cost. However, these materials are more susceptible to degradation in the...
Understanding charge transfer in organic semiconductors is important for developing devices like organic light emitting diodes and flexible electronics. Optical tweezers have been used in many disciplines for trapping, manipulating, and analyzing microscopic objects such as microspheres, micro-organisms, and other colloidal particles. Using optical tweezers, studies have measured the average...
This thesis is a development of two sets of equations predicting the switching times of a saturated transistor. The first set of equations defines the rise, storage, and fall times at a single operating point where the transistor beta, cutoff frequency and collector capacitance are known. The second set of...