Metal-Free Graphene as Transparent Electrode for GaN-Based Light-Emitters

スポンサーリンク

概要

• 論文の詳細を見る

• Graphene contacts to p-GaN are considered as an alternative to indium--tin-oxide transparent electrodes in GaN based vertical-cavity surface-emitting lasers (VCSELs). Contact properties were investigated on light-emitting diode and p-GaN test structures, where dielectric apertures were used to eliminate the influence of the metal pads used to bias the contacts. Using single layer graphene we were able to operate light emitting diodes with current densities of 300 A/cm². Addition of a second layer of graphene increased the maximum bias current to 1 kA/cm². However, the contacts are non-linear and cannot withstand high current densities for a long time. The results are promising but further investigation and improvement is needed for graphene to be a viable alternative to indium--tin-oxide for blue VCSELs.

• 2013-08-25

著者

• SUN Jie

  Department of Electrical Engineering, University of South Carolina

• Stattin Martin

  Department of Microtechnology and Nanoscience --- MC2, Chalmers University of Technology, 412 96 Gothenburg, Sweden

• Rosa Cesar

  Department of Microtechnology and Nanoscience --- MC2, Chalmers University of Technology, 412 96 Gothenburg, Sweden

• Yurgens August

  Department of Microtechnology and Nanoscience --- MC2, Chalmers University of Technology, 412 96 Gothenburg, Sweden

• Haglund Åsa

  Department of Microtechnology and Nanoscience --- MC2, Chalmers University of Technology, 412 96 Gothenburg, Sweden

• Sun Jie

  Department of Microtechnology and Nanoscience --- MC2, Chalmers University of Technology, 412 96 Gothenburg, Sweden

関連論文

• 324 nm Light Emitting Diodes With MilliWatt Powers : Semiconductors
• Sub-Milliwatt Power III-N Light Emitting Diodes at 285 nm
• Invasive pulmonary fungal infection accompanied by severe hemoptysis in patients with hematologic diseases : a report of nine cases
• Matrix metalloproteinase disruption of the extracellular matrix and cardiovascular disease
• Research on the Isolation of Mouse Leydig Cells Using Differential Digestion with a Low Concentration of Collagenase
• Design and Fabrication of AlN/GaN Heterostructures for Intersubband Technology
• Metal-Free Graphene as Transparent Electrode for GaN-Based Light-Emitters
• Increased differentiation of Th22 cells in Hashimoto's thyroiditis

スポンサーリンク