Laser ablation of molecular carbon nitride compounds

作者：Fischer D^*; Schwinghammer K; Sondermann C; Lau V W; Mannhart J; Lotsch B V

来源：Applied Surface Science, 2015, 349: 353-360.

DOI：10.1016/j.apsusc.2015.04.212

• Pulsed laser deposition
• Ultra short laser
• Carbon nitrides
• Thin films
• Properties

We present a method for the preparation of thin films on sapphire substrates of the carbon nitride precursors dicyandiamide (C2N4H4), melamine (C3N6H6), and melem (C6N10H6), using the femtosecond-pulsed laser deposition technique (femto-PLD) at different temperatures. The depositions were carried out under high vacuum with a femtosecond-pulsed laser. The focused laser beam is scanned on the surface of a rotating target consisting of the pelletized compounds. The resulting polycrystalline, opaque films were characterized by X-ray powder diffraction, infrared, Raman, and X-ray photoelectron spectroscopy, photoluminescence, SEM, and MALDI-TOF mass spectrometry measurements. The crystal structures and optical/spectroscopic results of the obtained rough films largely match those of the bulk materials.

• 出版日期2015-9-15