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0000000689 18S 2SWS VO Semiconductor Electronic and Photonic Devices   Hilfe Logo

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Semiconductor Electronic and Photonic Devices 
0000000689
lecture
2
Summer semester 2018
Chair of Experimental Semiconductor Physics (Prof. Sharp)
(Contact information)
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For more than 50 years semiconductor devices for information technologies and photonics have evolved from laboratory curiosities to mainstream devices with relevance for all aspects of our modern life. The aim of this course is to provide MSc. students in the Applied Engineering and Condensed Matter Physics study programs with an in-depth understanding of the fundamental physics underlying the operation of key semiconductor electronic and photonic devices. The course will provide students with insights into new approaches, materials and current research themes and is divided into two parts that, respectively, focus specifically on electronic and photonic micro- and nano-devices:
Part 1 – will start by reviewing the physics of semiconductor junctions and metal-semiconductor contacts before continuing to explore bipolar junction and heterostructure bipolar transistors (BJTs, HBTs). We will also discuss secondary effects that impact on static and high frequency transistor performance. After this, we will explore field effect devices such as the junction FET, metal-semiconductor and -oxide devices (MISFET / MOSFET) and the use of complementary metal oxide semiconductor (CMOS) technologies for CCDs and DRAM. We will also discuss current challenges faced by CMOS technologies and discuss new concepts that move beyond CMOS including carbon nanostructures, molecular electronics and quantum dot based electronic nano-devices.
Part 2 – focus will shift to linear and non-linear photonic devices including light emitting diodes, semiconductor optical amplifiers (SOA), non-linear photonic devices and lasers. Here, we will explore different ways to tailor the electronic and photonic components of the laser structure to obtain single mode operation and discuss recent trends to downscale both the laser cavity and the gain-medium to realise new classes of nano-lasers with enhanced performance and high modulation bandwidths. We will then continue to explore devices based on linear and non-linear optical phenomena including electro-, magneto- and acousto-optic effects. Finally, the course will conclude with a discussion of semiconductor and superconductor based solar-cells and photodetectors that can detect single photons with near unity quantum efficiency.
Fundamentals of Solid State Physics, Semiconductor Physics I
• Understand and explain the physics of metal-semiconductor junctions.
• Describe the structure and explain the physics underlying the operation of bipolar micro-electronic devices such as the BJT and HBT.
• Describe the structure and operation of field effect devices such as the JFET / MISFET & MOSFET and be aware of the factors influencing their static and dynamic (high frequency) properties.
• Explain the meaning of complementary metal oxide semiconductor (CMOS) technologies and discuss their use in applications such as DRAM and CCD cameras.
• Be aware of current evolutionary advances that go beyond CMOS, ranging from silicon-on-insulator (SOI), dual gate FETs and SiGe structures to carbon nano-electronics and molecular electronics.
• Be able to explain the design and operation of dielectric waveguides and recall fundamental approaches including the use of the effective index method to calculate guided transverse-electric & -magnetic modes.
• Explain the structure, design and operation of modern high efficiency LEDs and be able to explain the factors that influence device performance and emission characteristics.
• Describe the structure of modern semiconductor optical amplifiers (SOA) and lasers and explain the physics underlying their operation. Recall the factors influencing the static and dynamic properties of such lasers.
• Be aware of current trends toward extreme miniaturized lasers having nanostructured gain media and photonic resonators.
• Discuss the use of non-linear optical phenomena to modulate optical beams at high frequencies and explain the operation of electro-optical, magneto-optical and acousto-optical approaches.
• Recall the physics underpinning the operation of non-linear optical devices such as optical switches and frequency converters.
• Describe the structure and operation of semiconductor photo-receivers, detectors and solar-cell devices.
• Be able to summarize the operating principles and current state of the art in superconducting nanowire single photon detectors and their use in e.g. quantum communication technologies.
English

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[LV-Evaluation:PH]
In SS 2017 as a block course during the second half of lecturing period