Essays about: "light extraction efficiency"

Showing result 1 - 5 of 6 essays containing the words light extraction efficiency.

  1. 1. Cutting emissions with remanufacturing

    University essay from Lunds universitet/Miljövetenskaplig utbildning

    Author : Maja Anehagen; [2021]
    Keywords : Life cycle assessment; LCA; Remanufacturing; Resource efficiency; Circular economy; Electric and electronic equipment; Hardware manufacturing sector; Earth and Environmental Sciences;

    Abstract : An increase in the use of natural resources is directly associated with an increased environmental impact. It is therefore of importance to lead the manufacturing industry towards a route of material efficiency. Remanufacturing is an industrial process that brings a used product and its components back to like-new or better condition. READ MORE

  2. 2. Black-box optimization of simulated light extraction efficiency from quantum dots in pyramidal gallium nitride structures

    University essay from Linköpings universitet/Matematiska institutionen

    Author : Karl-Johan Olofsson; [2019]
    Keywords : Black-box optimization; Radial basis functions; Gallium nitride; light extraction efficiency; FDTD; surrogate functions; semiconductors; global optimization;

    Abstract : Microsized hexagonal gallium nitride pyramids show promise as next generation Light Emitting Diodes (LEDs) due to certain quantum properties within the pyramids. One metric for evaluating the efficiency of a LED device is by studying its Light Extraction Efficiency (LEE). READ MORE

  3. 3. LED's Buy Greener: Shedding Light on Sustainable Procurement

    University essay from Lunds universitet/Internationella miljöinstitutet

    Author : Hippolyte De Bellefroid; Julie Emmrich; Wolfgang Haider; Dalia Hashweh; Caroline Heinz; Anita Lazurko; Antoine Lucic; Robin Mace-Snaith; Sahar Sajjad Malik; Shushant Vasisth; Yifei Zhao; [2017]
    Keywords : Technology and Engineering; Social Sciences; Earth and Environmental Sciences; Business and Economics;

    Abstract : In last decade, the lighting industry significantly changed with the development of light emitting diodes (LEDs) and their corresponding penetration of the market. The new technology increases energy efficiency and longevity compared to other types of lamps. READ MORE

  4. 4. Heat recovery from untreated wastewater : A case study of heat recovery from sewerline to district heating network

    University essay from KTH/Energiteknik

    Author : Ola Vestberg; [2017]
    Keywords : ;

    Abstract :  High amounts of heat energy are today deposited into the urban wastewater system. The current society-wide development for energy efficiency has so far barely touched upon the area of wastewater heat conservation, which is why the share of total energy consumption from water use is increasing. READ MORE

  5. 5. De-polymerization and Purification of Kraft Lignin Utilizing the Liquid-Lignin Phase

    University essay from Lunds universitet/Kemiteknik (CI)

    Author : Martin Sundin; [2017]
    Keywords : ALPHA; SLRP; Liquid-Lignin; Lignin; Technology and Engineering;

    Abstract : The effects of global warming are apparent and the work towards a sustainable future is underway. In order to reduce the environmental impact caused by the transportation sector, a transition from fossil fuels to those based on renewable resources are important. Using agricultural land to produce raw materials, e.g. READ MORE