Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 5 of 5 for “"optical absorption coefficients"”.
-
Quasi-Two-Dimensional Phenomena at Aluminum-Gallium - Arsenide - Gallium-Arsenide Heterointerfaces: Multiple Quantum Wells and Modulation-Doped Structures (Superlattice, Modfet, Semiconductors)
… multiple quantum well systems are described: optical absorption coefficients and exciton oscillator strengths in AlGaAs-GaAs multiple quantum wells are greatly enhanced as well widths become narrower: this effect is in excellent agreement with recent calculation. Additionally acceptor energies …
-
Quasi-two-dimensional phenomena at AlGaAs-GaAs heterointerfaces, multiple quantum wells and modulation-doped structures
… multiple quantum well systems are described: optical absorption coefficients and exciton oscillator strengths in AIGaAs-GaAs multiple quantum wells are greatly enhanced as well widths become narrower: this effect is in excellent agreement with recent calculation. Additionally acceptor energies …
-
Understanding electronic defects in organic solar cells: Defect identification, characterization & mitigation
… processing on flexible substrates, high optical absorption coefficients, low- temperature processing, and easy tunability by chemical doping. Substantial progress has resulted from the optimization of materials processing parameters and the emergence of new materials. Recent works have …
-
Ion Beam Synthesis and Irradiation for Si-Based Photonic Materials and Nuclear Waste Management
… telecommunications drive the need for Si-based optical materials (group IV alloys) with tunable bandgaps, and for strategies to overcome fabrication challenges. Ion implantation and annealing were used to incorporate Ge and Sn into Si (2.5 – 10 × 10¹⁶ Ge/cm²; 5 ×10¹⁴ – 4 × 10¹⁶ Sn/cm², 0 – 800 …
-
Quantification and Reconstruction in Photoacoustic Tomography
Optical absorption is closely associated with many physiological important parameters, such as the concentration and oxygen saturation of hemoglobin. Conventionally, accurate quantification in PAT requires knowledge of the optical fluence attenuation, acoustic pressure attenuation, and detection …