EFFECT OF LOW-TEMPERATURE ANNEALING ON STRUCTURE AND OPTICAL PROPERTIES OF AMORPHOUS TRIS(8-HYDROXYQUINOLINE) ALUMINUM FILMS

Feng Jiang, Zhiyong Pang, Huimin Yuan, Zhixian Wei, Wanfeng Xie and Shenghao Han
Additional contact information
Feng Jiang: School of Mathematical and Physical Sciences, Dalian University of Technology at Panjin, Panjin 124221, P. R. China2School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P. R. China
Zhiyong Pang: School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P. R. China
Huimin Yuan: School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P. R. China
Zhixian Wei: School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P. R. China
Wanfeng Xie: School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P. R. China
Shenghao Han: School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P. R. China

Surface Review and Letters (SRL), 2019, vol. 26, issue 04, 1-5

Abstract: Needle-shaped nanostructured tris(8-hydroxyquinoline) aluminum nanowires (Alq3) have been obtained by annealing Alq3 amorphous films at 150∘C which is lower than the glass transition temperature of Alq3 (172∘C). The growth of Alq3 nanowires is attributed to the migration and stacking of Alq3 molecules which acquire thermal energy from the annealing process. X-ray diffraction analysis and scanning electronic microscopy spectra show that the Alq3 nanowires are composed of the well-known α-phase Alq3. The intensity of the photoluminescence spectra firstly increases and then decreases as the annealing time increases, along with a spectral blue shift. The optical transmittance spectra of the annealed Alq3 films show a smaller average absorption in the visible range and a wider optical bandgap compared with that of the amorphous films, as a result of the decrease of π overlapping in the Alq3 molecules.

Keywords: Nanostructures; crystal morphology; organic compounds; semiconducting materials; annealing treatment (search for similar items in EconPapers)
Date: 2019
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0218625X18501834
Access to full text is restricted to subscribers

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:wsi:srlxxx:v:26:y:2019:i:04:n:s0218625x18501834

Ordering information: This journal article can be ordered from

DOI: 10.1142/S0218625X18501834

Access Statistics for this article

Surface Review and Letters (SRL) is currently edited by S Y Tong

More articles in Surface Review and Letters (SRL) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().