Organic semiconductor rubrene thin films deposited by pulsed laser evaporation of solidified solutions

N. Majewska, M. Gazda, R. Jendrzejewski, S. Majumdar, M. Sawczak, G. Śliwiński

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

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Abstract

Organic semiconductor rubrene (C42H28) belongs to most preferred spintronic materials because of the high charge carrier mobility up to 40 cm2(V·s)-1. However, the fabrication of a defect-free, polycrystalline rubrene for spintronic applications represents a difficult task. We report preparation and properties of rubrene thin films deposited by pulsed laser evaporation of solidified solutions. Samples of rubrene dissolved in aromatic solvents toluene, xylene, dichloromethane and 1,1-dichloroethane (0.23-1% wt) were cooled to temperatures in the range of 16.5-163 K and served as targets. The target ablation was provided by a pulsed 1064 nm or 266 nm laser. For films of thickness up to 100 nm deposited on Si, glass and ITO glass substrates, the Raman and AFM data show presence of the mixed crystalline and amorphous rubrene phases. Agglomerates of rubrene crystals are revealed by SEM observation too, and presence of oxide/peroxide (C42H28O2) in the films is concluded from matrix-Assisted laser desorption/ionization time-of-flight spectroscopic analysis.

Original languageEnglish
Title of host publicationThird International Conference on Applications of Optics and Photonics
Pages1-9
Number of pages9
ISBN (Electronic)9781510613836
DOIs
Publication statusPublished - 1 Jan 2017
MoE publication typeA4 Article in a conference publication
EventInternational Conference on Applications of Optics and Photonics - Faro, Portugal
Duration: 8 May 201712 May 2017
Conference number: 3

Publication series

NameProceedings of SPIE
PublisherSPIE
Volume10453
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceInternational Conference on Applications of Optics and Photonics
CountryPortugal
CityFaro
Period08/05/201712/05/2017

Keywords

  • Pulsed laser evaporation
  • Rubrene organic semiconductor
  • Spintronics
  • Thin films

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