Preparation, optical and electrical properties of PTCDA nanostructures. Issue 40 (30th September 2015)

• Record Type: Journal Article
• Authors: Han, Yuyan; Ning, Wei; Du, Haifeng; Yang, Jiyong; Wang, Ning; Cao, Liang; Li, Feng; Zhang, Fapei; Xu, Faqiang; Tian, Mingliang
• Is Part Of: Nanoscale. Volume 7:Issue 40(2015)
• Page Start: 17116
• Page End: 17121
• Publication Date: 2015-09-30
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c5nr04738b
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : The induced nucleation effect arouses the formations of nanorods, nanowires and nanoparticles. The high crystallinity of the nanowires and the strong π–π conjugation between PTCDA molecules induce the conductivity improvement. Abstract : Film, nanorods (NRs), nanowires (NWs), and nanoparticles (NPs) of perylene-3, 4, 9, 10-tetracarboxylic dianhydride (PTCDA) were prepared by organic molecular beam deposition (OMBD) on porous anodic alumina oxide (AAO) at different substrate temperatures ( T s ). Scanning electron microscopy (SEM) study showed that the morphologies of the nanostructures (NS) formed on AAO strongly depend on the T s . The absorption spectra of different PTCDA NS present strong absorbance in the wavelength range of 400–600 nm, and the photoluminescence (PL) spectra show a blue shift as T s increases. The current versus voltage ( I – V ) characteristic illustrates that the electrical conductivity of the single-crystal NW is about 3 ± 0.1 S m −1, which is much higher than the conductivity of PTCDA film reported previously.