Sökning: "n-type organic materials"

Hittade 3 uppsatser innehållade orden n-type organic materials.

  1. 1. Surface energy modification of metal oxide to enhance electron injection in light-emitting devices : charge balance in hybrid OLEDs and OLETs

    Master-uppsats, Högskolan i Gävle/Avdelningen för elektronik, matematik och naturvetenskap

    Författare :Sergio Apicella Fernandez; [2017]
    Nyckelord :organic; inorganic; semiconductors; OLEDs; OLETs; TFT; stack; thin-film; deposition; spin-coating; thermal; evaporation; process; reactive; sputtering; luminescence; EQE; PEIE; metal-oxide; ZnO; ZnO:N; MoO3; F8BT; Alq3; NPB;

    Sammanfattning : Organic semiconductors (OSCs) present an electron mobility lower by several orders of magnitude than the hole mobility, giving rise to an electron-hole charge imbalance in organic devices such as organic light-emitting diodes (OLEDs) and organic light-emitting transistors (OLETs). In this thesis project, I tried to achieve an efficient electron transport and injection properties in opto-electronic devices, using inorganic n-type metal oxides (MOs) instead of organic n-type materials and a polyethyleneimine ethoxylated (PEIE) thin layer as electron transport (ETLs) and injection layers (EILs), respectively. LÄS MER

  3. 2. Thermoelectrical Characterization of Organic Materials

    Master-uppsats, Institutionen för teknik och naturvetenskap

    Författare :Abdellah Malti; [2009]
    Nyckelord :thermoelectrics; thermogenerators; n-type organic materials; TDAE doping;

    Sammanfattning : Organic semiconductors are prime candidates for thermoelectric applications, because one can maximize the dimensionless figure of merit ZT (by maximizing the Seebeck coefficient and electrical conductivity) while simultaneously minimizing the thermal conductivity. In this work, we explore a few materials and try to find their thermoelectric characteristics. LÄS MER

  4. 3. Light emitting diodes based on n-type ZnO nanorods and p-type organic semiconductors

    Uppsats för yrkesexamina på grundnivå, Institutionen för teknik och naturvetenskap

    Författare :Raja Sellappan; [2008]
    Nyckelord :ZnO; ACG; organic; Inorganic; Polymer; nanorods;

    Sammanfattning : The aim of this thesis work was to fabricate a hybrid LED using organic-inorganic ZnO materials. The goal of the project was to get an efficient white light emission from zinc oxide (ZnO) nanorods active layer. LÄS MER