Sökning: "Bulk heterojunction"

Visar resultat 11 - 15 av 22 avhandlingar innehållade orden Bulk heterojunction.

  1. 11. Organic Photodiodes : Optical, electric, and morphological aspects of polymer based devices

    Författare :Lucimara Stolz Roman; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The use of semiconducting organic materials as the active layer in optoelectronic devices offers some advantages in processing and new possibilities of device fabrication such as large-area devices. The mechanism of charge generation upon light absorption in organic materials differs from that in inorganic semiconductors. LÄS MER

  3. 12. Synthesis of Conjugated Polymers for Solar Cell Applications

    Författare :Desta Antenehe Gedefaw; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polyfluorenes; Conjugated polymers; Donor-acceptor miscibility; Black polymers; Optical absorption;

    Sammanfattning : Fossil fuels are largely used as a source of energy to fulfil the energy demand of mankind. However, fossil fuels suffer from limitations. The unlimited burning of fossil fuels releases greenhouse gases and causes environmental pollution. Fossil fuels are also an unreliable source of energy since the natural deposit is limited. LÄS MER

  4. 13. The morphology of polyfluorene : fullerene blend films for photovoltaic applications

    Författare :Ana Sofia Anselmo; Håkan Rensmo; Karlstads universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials Science; Organic Photovoltaics; Polymer Solar Cells; Materialteknik; Materials Engineering;

    Sammanfattning : Polymer photovoltaic systems whose photoactive layer is a blend of a semiconducting polymer with a fullerene derivative in a bulk heterojunction configuration are amongst the most successful organic photovoltaic devices nowadays. The three-dimensional organization in these layers (the morphology) plays a crucial role in the performance of the devices. LÄS MER

  5. 14. Interface Phenomena in Organic Electronics

    Författare :Qinye Bao; Mats Fahlman; Xianjie Liu; Slawomir Braun; Mathieu Turbiez; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Organic electronics based on organic semiconductors offer tremendous advantages compared to traditional inorganic counterparts such as low temperature processing, light weight, low manufacturing cost, high throughput and mechanical flexibility. Many key electronic processes in organic electronic devices, e.g. LÄS MER

  7. 15. Design, Synthesis and Characterization of Conjugated Polymers for Photovoltaics and Electrochromics

    Författare :Kim Bini; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; organic electronics; conjugated polymers; electrochromic polymers; polymer solar cells; all-polymer solar cells; side chain engineering;

    Sammanfattning : With the invention of organic electronics, a new class of materials needed to be explored and suitable applications found. The use as semiconductors in many different devices has been explored, where photovoltaics, light-emitting diodes and field-effect transistors have been prominent. LÄS MER