Essays about: "Chemical etching"
Showing result 6 - 10 of 28 essays containing the words Chemical etching.
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6. AlP sacrificial layer for GaP NW growth
University essay from Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionenAbstract : III-V semiconductor nanowires (NWs) display outstanding potential for many technological applications, but their implementation into devices is restricted due to high material and fabrication costs. Common techniques for NW synthesis rely on single crystalline substrates, which are single-use and have large costs associated to them. READ MORE
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7. Patterning of perovskite thin films for electrical and optical characterisation
University essay from Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionenAbstract : While perovskite solar cells have become increasingly more efficient and popular, electrical characterisation of the semiconductor properties of perovskites has been limited due to the instability of the material. In this work, multiple approaches for creating such electrical test structures from perovskites are discussed. READ MORE
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8. Offline study of next generation EUV pellicle materials and performances : From experimental design to material characterization
University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)Abstract : Lithography is the most crucial step in the semiconductor microfabrication workflow. Continuous features size shrinking co-occurs with the reduction of the exposure wavelength: a move from 193 nm light to extreme ultra-violet (EUV) at 13.5 nm is performed. The change poses a vast number of challenges that have been overcome in the past years. READ MORE
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9. Selective Area Growth of AlGaN pyramid with GaN Multiple Quantum Wells
University essay from Linköpings universitet/HalvledarmaterialAbstract : Since Shuji Nakamura, Hiroshi Amano, and Isamu Akasaki won the 2014 Nobel prize in Physics owing to theircontributions on the invention of efficient blue GaN light emitting diodes, GaN became an even more appealingmaterial system in the research field of optoelectronics. On the other hand, quantum structures or low-dimensionalstructures with properties derived from quantum physics demonstrate superior and unique electrical and opticalproperties, providing a significant potential on novel optoelectronic applications based on the employment of quantumconfinement. READ MORE
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10. Effect of oxygen concentration in build chamber during laser metal deposition of Ti-64 wire
University essay from KTH/MaterialvetenskapAbstract : Additive manufacturing of titanium and other metals is a rapidly growing field that could potentially improve component manufacturing through optimization of geometries, less material waste and fewer process steps. Although powder-based additive manufacturing processes have so far been predominant, methods using a wire as feedstock has gained popularity due to faster deposition rates and lower porosity in deposited material. READ MORE
