STM study of the organic semiconductor PTCDA on highly-oriented pyrolytic graphite

Engineering & Materials Science

• Bias voltage 28%
• Crystalline materials 11%
• Graphite 55%
• Molecular orbitals 38%
• Molecules 43%
• Monolayers 44%
• Multilayer films 51%
• Orbital calculations 21%
• Organic semiconductor materials 91%
• Scanning tunneling microscopy 100%
• Substrates 7%
• Ultrahigh vacuum 17%

Physics & Astronomy

• cells 18%
• electric potential 12%
• electronics 5%
• high resolution 6%
• image contrast 12%
• molecular orbitals 22%
• molecules 24%
• organic semiconductors 63%
• periodic variations 10%
• pyrolytic graphite 72%
• room temperature 6%
• scanning tunneling microscopy 54%
• symmetry 13%
• ultrahigh vacuum 11%

Chemical Compounds

• Ambient Reaction Temperature 6%
• Dimension 8%
• Graphite 41%
• Liquid Film 10%
• Lowest Unoccupied Molecular Orbital 12%
• Molecular Orbital 10%
• Molecule 11%
• Monolayer 25%
• Multilayer Film 39%
• Scanning Tunneling Microscopy 57%
• Semiconductor 42%
• Shape 7%
• Tunneling 11%
• Vacuum 8%
• Voltage 16%