Essays about: "bandgap"

Showing result 16 - 20 of 62 essays containing the word bandgap.

  1. 16. Intermediate layer contacts for tandem solar cells based on ALD SnO2

    University essay from Uppsala universitet/Institutionen för fysik och astronomi

    Author : Georgia Iona; [2021]
    Keywords : Ald; SnO2; tandem cell; solar cell; IML; intermediate layer;

    Abstract : In this project, samples with a metal/semiconductor/metal structure were fabricated and investigated with the potential application as the interconnecting layer of a tandem solar cell in mind. Degenerately doped p-Si and n-Si were used as bottom (metal like) contacts, as Si represents one of the most common materials for the bottom cell of tandem devices. READ MORE

  3. 17. Radiation effects on wide bandgap semiconductor devices

    University essay from KTH/Tillämpad fysik

    Author : Patric Elf; [2020]
    Keywords : applied physics;

    Abstract : Gallium nitride (GaN) based high-electron-mobility transistors (HEMTs) are used in a wide variety of areas, such as 5G, automotive, aeronautics/astronautics and sensing elds ranging from chemical, mechanical, biological to optical applications. Owing superior material properties, the GaN based HEMTs are especially useful in harsh operation environments e. READ MORE

  4. 18. Cu2O/TiO2 Nanorod Heterojunctions: Synthesis, Characterization and Applications as Solar Cells on the Nanoscale

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Edward Dellamary; [2020]
    Keywords : ;

    Abstract : Novel solar cells are being synthesized from sustainable, non-toxic, and economic materials. All metal oxide semiconductors are one such class of these materials. READ MORE

  5. 19. Sn-Pb-mixtures for Perovskite Solar Cells

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

    Author : Fanny Amanda Karolina Baumann; [2020]
    Keywords : Perovskite Solar Cells; PSC; Sn; Tin; Lead; Pb; FAPI; Renewable Energy; Compositional Engineering; Interfaces; Morphology; PL; Photoluminescence; Thin film stability; Technology and Engineering;

    Abstract : Perovskite research has quickly gone from non-existent to one of the biggest reseach areas in Photo- voltaics. There are still many questions to be solved regarding the stability, environmental impact, reproducible large area devices, efficiency and module fabrication cost of Perovskite Solar Cells, PSCs, before commercial up-scaling. READ MORE

  6. 20. Isolated Single-Stage Interleave Resonant PFC Rectifier with Active and Novel Passive Output Ripple Cancellation Circuit

    University essay from Uppsala universitet/Institutionen för elektroteknik

    Author : Abidemi Oluremilekun Eleyele; [2020]
    Keywords : single-stage AC DC converter; bridgeless power factor correction PFC rectifier; active passive ripple cancellation; zero current switching ZCS ; zero voltage switching ZVS ; Electric vehicle EV charger; LLC;

    Abstract : With the increasing demand for fast, cheaper, and efficient power converters come the need for a single-stage power factor correction (PFC) converter. Various single-stage PFC converter proposed in the literature has the drawback of high DC bus voltage at the input side and together with the shift to wide bandgap switches like GaN drives the converter cost higher. READ MORE