Graphitic Carbon Nitride Fabrication

ORAL

Abstract

Single atom thickness carbon nitride sheets have been predicted as good high speed semiconductors. However, it is difficult to synthesize large continuous single layer sheets. Although large amorphous multilayer sheets can be produced easily, single layer sheets require a precise deposition method and solution. We synthesized the carbon nitride at the University of Massachusetts Lowell in the Center for High-rate Nanomanufacturing. Synthesis starts by depositing solutions on silicon wafers using various deposition methods. Wafers are then baked in an ultrahigh purity argon environment where ammonia is removed thereby transforming the chemical deposit of Dicyandiamide into carbon nitride. After baking samples they are tested with Raman Spectroscopy and Atomic Force Microscopy. Single atom thickness samples are then patterned using negative photoresist lithography and coated with aluminum. Excess aluminum is removed and the samples are probed to test band gap and resistivity. Difficulties were encountered in finding a good solvent, proper concentration, and deposition method that worked. The synthesis techniques, solution types, baking specifications, characterization techniques, and results will be presented.

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Authors

  • Adam Collard

    University of Dallas

  • Samantha Lacombe

    Tarleton State University, Lee College, Highland Park High School, University of Pittsburgh, Wards and Seargent Welch, Davidson College, University of Texas at Arlington, University of Texas At Arlington, Instituto de Fisica, Universidade de Sao Paulo, Texas A\&M University, none, University of Central Arkansas, Department of Physics, Lamar University, Stuyvesant HS, UTEP, University of North Texas, University of Houston Clear Lake, The University of Texas at Dallas, Abilene Christian University, Albert Einstein Institute, Syracuse University, Albert Einstein Institute, Baylor University Department of Physics, NASA Ames Research Center, University of Central Arkansas, University of North Dakota, University of Kentucky, United States Naval Academy, University of Dallas, Advisor, Mentor, Texas A\&M University - Commerce, The university of Texas at El Paso, University of Texas Arlington

  • Samantha Lacombe

    Tarleton State University, Lee College, Highland Park High School, University of Pittsburgh, Wards and Seargent Welch, Davidson College, University of Texas at Arlington, University of Texas At Arlington, Instituto de Fisica, Universidade de Sao Paulo, Texas A\&M University, none, University of Central Arkansas, Department of Physics, Lamar University, Stuyvesant HS, UTEP, University of North Texas, University of Houston Clear Lake, The University of Texas at Dallas, Abilene Christian University, Albert Einstein Institute, Syracuse University, Albert Einstein Institute, Baylor University Department of Physics, NASA Ames Research Center, University of Central Arkansas, University of North Dakota, University of Kentucky, United States Naval Academy, University of Dallas, Advisor, Mentor, Texas A\&M University - Commerce, The university of Texas at El Paso, University of Texas Arlington