31 Questions
What are the limitations of using Si and Ge in optoelectronics?
They have very limited uses due to being indirect Bandgap structures and showing poor light emission and absorption properties.
How can the limitations of elemental semiconductors be overcome in optoelectronics?
By doping them with different group elements to form compounds or alloys.
What are some examples of III-V group compound materials in optoelectronics?
a) GaN, GaP, InSb, b) AlGaAs, InGaP, InGaAs, c) AlGaInP
Give examples of binary form II-VI group compound materials.
ZnS, GdSe, PbTe, ZnO, CdS
What are some techniques used for synthesizing modern semiconducting materials?
Molecular Beam Epitaxy (MBE), Chemical Vapor Deposition (CVD) along with band gap engineering
What types of optoelectronic devices can be fabricated using modern semiconducting materials?
LEDs, LASERs, Solar cells, and Photo-diodes active in Visible, IR, and UV regions
What are the three main interactions of light with optoelectronic devices or semiconducting materials?
a) Reflection (A%) b) Absorption (B%) c) Transmission (C%)
According to the law of conservation of energy, how is the incident light energy distributed in optoelectronic devices?
Incident light energy = Reflected energy (A%) (100%) + Absorbed energy (B%) + Transmitted energy (C%)
What are the excess charge carriers responsible for in semiconducting materials?
Charge carrier generation, i.e., electron-hole pairs
What is optoelectronics?
The branch of science and technology concerned with the combined use of electronics and light.
What is the subfield of optoelectronics?
Photonics
Why are semiconducting materials preferred in optoelectronics?
Due to the variation in their electrical conductivity over orders of magnitude by changing in temperature, optical excitation, and the presence of impurity content in them.
What are the two most common semiconductors studied at an elemental level?
Germanium (Ge) and Silicon (Si)
What are the devices that support the interaction between light and electronics known as?
Transducers
What is the basic working process of optoelectronics?
The optical interaction on the electronic responses in specific optically active semiconducting materials.
What is the basic working process of optoelectronics?
The basic working process of optoelectronics deals with the optical interaction on the electronic responses in specific optically active semiconducting materials.
Why are semiconducting materials preferred in optoelectronics?
Semiconducting materials are preferred in optoelectronics due to their ability to vary electrical conductivity over orders of magnitude by changing in temperature, optical excitation, and the presence of impurity content.
What is the subfield of optoelectronics that includes the generation, transmission, and detection of light?
Photonics
What are the two most common semiconductors studied at an elemental level?
Germanium (Ge) and Silicon (Si)
What are the devices that support the interaction between light and electronics known as?
Transducers
What are some examples of optoelectronic materials from Group-IV of the periodic table?
Germanium (Ge) and Silicon (Si)
What are some examples of quaternary form III-V group compound materials used in optoelectronics?
AlGaInP
In optoelectronics, what types of light spectrums are covered by semiconducting materials?
Infrared, visible, and ultraviolet regions
What are two modern semiconducting growth techniques used for creating composite compounds or alloys?
Molecular Beam Epitaxy (MBE) and Chemical Vapor Deposition (CVD)
What is the main manifestation in all optoelectronic devices concerning the interaction of light with semiconducting materials?
Interaction of optical radiations or photons with the semiconducting material
According to the law of conservation of energy, how is the incident light energy distributed in optoelectronic devices?
Incident light energy = Reflected energy (A%) (100%) + Absorbed energy (B%) + Transmitted energy (C%)
What is the purpose of band gap engineering in synthesizing modern semiconducting materials?
To create various composite compounds or alloys
What are the three main interactions of light with optoelectronic devices or semiconducting materials?
Reflection, Absorption, Transmission
What are the excess charge carriers responsible for in semiconducting materials?
Charge carrier generation
What are some examples of binary form II-VI group compound materials used in optoelectronics?
ZnS, PbTe, CdS
What is the primary reason for the limited uses of Si and Ge in optoelectronics?
They are indirect Bandgap structures material
Explore the fundamentals of optoelectronics, which combines electronics and light to study and apply electronic devices as sources, detectors, and controllers of light. Understand its relationship with photonics, covering the generation, emission, transmission, modulation, signal processing, amplification, detection, and sensing of light.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
