Skip to main content

Effects of Size on the Optical Properties of Organic Semiconductors: Copper (II) Phthalocyanine Nanoparticles

Buy Article:

$20.00 plus tax (Refund Policy)


Organic materials are of great interest for use as electronic and optoelectronic devices. Currently, solar cells are in limited use, due to their relatively high cost. Solar cells based on organic semiconductors are promising as low-cost alternatives to current technologies; for example, low cost printed solar cells may be possible. However, significant frequency ranges in the solar spectrum are not absorbed. Expanding the absorption-spectrum bandwidth for the organic materials by varying the band gap can lead to improved efficiency for solar cells based on organic semiconductor inks. Here we test the possibility of using nanoparticles with different sizes to increase the absorption efficiency.

Copper Phthalocyanine (CuPc) nanoparticles have been prepared by a Liquid–Liquid Interface Recrystallization Technique (LLIRCT), and deposited on substrates using a dip-coater at room temperature. The size of the nanoparticles is measured by transmission electron microscopy (TEM). Particle size and morphology are mainly determined by the preparation time. Optical proprieties were measured using UV-VIS spectroscopy from 350 to 1000 nm. The spectra show a shift in the peak positions as the particles become smaller. The band gap increases with the particle size.

Document Type: Research Article

Publication date: 2011-01-01

More about this publication?
  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

  • Information for Authors
  • Submit a Paper
  • Subscribe to this Title
  • Membership Information
  • Terms & Conditions
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more