Yang Yang Laboratory
Research Group for Organic Electronic Materials & Devices
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Our Laboratory

We have established a world-class research facility for organic/polymer electronics. From the synthesis of high quality conjugated polymer to the fabrication and characterization of various organic electronic devices, the facilities consist of three laboratories comprising an area of about 3,200 square feet in the Engineering V Building. Major equipment for the fabrication and characterization of polymer/organic LEDs, organic digital memory devices, and other organic electronic devices are listed as the following:
  • A state-of-the-art device fabrication line including one spin coater and three evaporators, all of them are under inert gas environment enclosed in four connected dry boxes.
    The fabrication line in four connected dry boxes.
    1. One HP 4155B and one HP 4155C semiconductor parameter analyzers;
    2. Four sets of Keithley 236/Keithley 2400 I-V measurement units;
    3. A characterization globe box with built-in feedthroughs, allowing device measurement in the inert gas environment;
      The characterization dry box.
    4. Two probe stations. One of them is capable of measuring device in a large range of temperature (from 90 K to 320 K) under vacuum environment;
      The two probe stations.
    5. A IPCE system capable to measure single and multi-junction(s) solar cells, supported by Enlitech
    6. A luminance colorimeters (Hoffman BM-7, Photo Research PR650) to provide the absolute brightness measurement for LEDs;
    7. Nikon E800 optical microscope equipped with cross-polarization, fluorescence; transmission, reflection, and Nomarsky microscopy capability;
    8. Two flourimeters for steady state fluorescence and fluorescence lifetime study;
    9. An LCR meter;
    10. A Renishaw Microscope Raman Spectrometer with temperature stage capable of temperatures from liquid nitrogen up to 200ÂșC;
    11. A Nano-3a atomic force microscope and scanning tunneling microscope;
    12. Integrating sphere, a nitrogen laser (4ns pulse width), and various power supplies, signal generator, digital oscilloscopes, nano-second lasers, and computer facilities;
    13. Rudolph Instruments, Inc. Photoelectric Ellipsometer;
    14. Dektak 150 profilometer from VEECO;
      The Dektak profilometer.
    15. A VCA Optima contact angle measurement unit;
    16. XPS/UPS system from Omicron including sample preparation chamber for preparing metal/organic interfaces under ultrahigh vacuum;
    17. Three more thermal evaporators outside dry boxes;
      The three thermal evaporators.
    18. A 3-target sputtering machine from ULVAC.
      The sputtering machine.
  • Equipment for chemical analysis includes:
    1. Varian Saturn 2200 GC/MS, CP-3800 GC system;
    2. A Varian Cary 50 UV-Visible Spectrophotometer;
    3. A Nicolet Avatar 360 FTIR Spectrometer, which is capable of acquiring IR spectra in transmittance mode, ATR mode, and grazing angle reflectance mode;
    4. Cyclic voltammetry measurement;
    5. Varian Pro Star 230 HPLC/GPC for polymer molecular weight measurement;
    6. TA Instruments TGA/DSC 2920 Differential Scanning Calorimeter;
    7. Brookfield DV-II Viscometer;
  • We have also established a chemical synthesis laboratory which allows us to produce some of the best quality conjugated polymer and nano-particles for our research. The lab is located in the California Nano System Institute (CNSI) Building.
    The chemistry lab in the CNSI Building.
    Our First Facility
    Yang Yang lab in 1997, 360 square feet.
    We installed the lab by ourselves, but the facility did not like it.