Essays about: "bandgap"

Showing result 11 - 15 of 62 essays containing the word bandgap.

  1. 11. Alternative Architectures of Quantum Dot Solar Cells

    University essay from KTH/Tillämpad fysikalisk kemi

    Author : Astrid Bergman; [2021]
    Keywords : Quantum dots; Solar cells; PbS; Alternative architectures; electron transporting layer; Kvantprickar; solceller; PbS; alternativa arkitekturer; elektrontransportlager;

    Abstract : Kvantprickar är intressanta för tillverkning av solceller på grund av möjligheten att justera bandgapet beroende på kvantpricksstorleken. I detta examensarbete har alternativa arkitekturer av PbS kvantprickssolceller testats samt att påverkan av olika lager har utvärderats. READ MORE

  3. 12. Film formation of mixed-halide perovskites for PSCs

    University essay from Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Author : Lina Ekstedt; [2021]
    Keywords : Mixed Halide Perovskites; Perovskite Solar Cells; Bandgap Tuning; In-situ Spectroscopy; Antisolvent; Interface Modifier.; Physics and Astronomy;

    Abstract : Over the last few years there has been a steady increase in interest in the exploration of perovskite materials within photovoltaic research. This can to a large extent be attributed to the incredible pace at which solar cells based on perovskites have improved in efficiency during the same time period. READ MORE

  4. 13. Optical characterisation of AAO/CsPbBr3 perovskite nanocomposites

    University essay from Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Author : Klára Nováková; [2021]
    Keywords : perovskite; scintillator; optoelectronics; semiconductor; X-ray detection; Physics and Astronomy;

    Abstract : Direct bandgap metal lead halide perovskites offer promising optoelectronic properties desirable in a wide range of applications including photodetection. However, the incomplete and poor understanding of the photophysical processes taking place in these materials, along with their poor stability, is the bottleneck for optimisation and further development of metal halide perovskite devices. READ MORE

  5. 14. Influence of strain and point defects on the Seebeck coefficient of thermoelectric CoSb3 : Inverkan av töjnings och punktdefekter på Seebeck-koefficienten för termoelektrisk CoSb3

    University essay from Malmö universitet/Fakulteten för teknik och samhälle (TS)

    Author : Ibrahim Awala; [2021]
    Keywords : Cobalt antimonide; Thermoelectric; Strain; Seebeck coefficient; oxidation; DFT; DFT-MD;

    Abstract : Many studies and experiments have been conducted over the years to find solutions to the electricity problem. This issue is not just related to how fossil fuels are dispensed. Also, the environmental concerns associated with using fossil fuels have become a severe issue, which is a major cause of environmental pollution and ozone layer damage. READ MORE

  6. 15. Gate oxide characterization of 4H-SiC MOS capacitors : A study of the effects of electrical stress on the flat-band voltage of n-type substrate 4H-SiC MOS capacitors

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Sotirios Maslougkas; [2021]
    Keywords : Silicon carbide; Gate oxide; Oxide characterization; MOS devices; Semiconductor- insulator interface; Kiselkarbid; Gate-oxid; Oxidkarakterisering; MOS-teknologi; halvledar-isolatorgränssnitt;

    Abstract : Silicon is the main material used in electronics. The evolution of power electronics and the need for more power efficient semiconductor devices led silicon to its limits. Silicon carbide is a promising material for electronic applications with a wide band-gap, high critical electric field, high thermal conductivity and saturation velocity. READ MORE