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CREOL, The College of Optics & Photonics
Spring 2016

OSE6416 - Organic Photonics

The course reviews optic and electronic properties inorganic molecules and polymers that are critical for photonic and opto-electronic applications.


Organic Photonics

 Credit Hours: 3 hours


  • Undergraduate degree in Chemistry/Physics/ Engineering
  • Graduate Standing
  • Consent of Instructor

 Description: This course reviews the optical and electronic properties in organic molecules and polymers that are critical for photonic and opto-electronic applications. Topics covered include basic principles of electronic properties of materials, hybridization of orbitals, HOMO-LUMO energy level formation, electronic delocalization, charge hopping, and hole and electron conduction. Special emphasis will be given to photo conducting and photosensitive materials, nonlinear optical materials and organic/polymer materials for optical components.  Application of organic/polymer materials in excitonic and electrochemical solar cells, organic light emitting diodes, photorefractive display devices and other current and emerging technologies will be discussed.  In addition, advanced photonic materials like graphenes,  carbon nanotubes and fullerenes will be introduced.

Learningoutcomes:Uponcompletionofthecourse,studentswillbeabletodemonstrateanin-depthknowledge of advanced organic materials that are highly important for optical and photonic applications. The students will also exhibit the technical and material knowledge required to fabricate organic photonic devices.

Grading Policy: Exams:50%, Proposal preparation (15 pages): 30%, Seminar: 20%

 Course Outline

 Introduction to organic photonics

  • Introduction to electronic properties of materials
  • Atomic orbitals, hybridization, sigma and pi bonds
  • Aromatic and conjugated molecules
  • Molecular interactions and hydrogen bonding
  • Band theory of organic materials
  • Electronic conduction in semiconductors
  • Structural factors and band gap tuning
  • Electron conducting, hole conducting and ion conducting polymers
  • Solitons, polarons, and excitons, the elementary excitations of conducting polymers

 2.      Charge conduction in organic materials

  • Charge generation by photo-excitation and recombination
  • Diffusion and drift of charge carriers
  • Energy levels and electronic transitions in molecular aggregates
  • HOMO-LUMO energy level measurement techniques: Photoemission spectroscopy and Cyclic Voltammetry.
  • Band gap tailoring of pi-conjugated systems for specific applications

3.      Applications of photoconducting polymers

 Photovoltaic cells:

  • Ionization potential and electron affinity; donor and acceptor molecules
  • Exciton diffusion length
  • Heterojunction, bulk heterojunction and dye-sensitized solar cells

 Organic light emitting diodes(OLED):

  • Basic properties and performance
  • Space charge limited and charge limited conduction

Photorefractive polymers:

  • Fundamentals of photorefractivity: charge generation, transport and trapping, space charge field build-up
  • Nonlinear chromophores, diffraction efficiency and two-beam coupling gain

 4.      Advanced materials for photonic applications

  • Optical dyes, dimers, excimers, charge transfer molecules
  • Carbon nanotubes, graphene and fullerenes
  • Polymer device fabrication techniques
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