Optical Spectroscopic Studies of Conjugated Molecules/Polymers. (Physics Section).

Rice, J.D. * and S. Guha. Physics, Astronomy and Materials Science Department, Southwest Missouri State University, Springfield, MO 65804. OPTICAL SPECTROSCOPIC STUDIES OF CONJUGATED MOLECULES/POLYMERS. In recent years there has been a growing interest in the use of organic material for optoelectronic devices. This is due in large part to the potential low cost of the device applications and the ease of fabrication of these materials. Organic light emitting diodes (OLED) allow the possibility of high-resolution displays without the viewing angle problems associated with liquid crystal displays. One of the major breakthroughs in this field is the electrically pumped organic laser based on conjugated molecules. Organic materials such as parahexaphenyl (PHP), ladder type poly(paraphenylene), and polyfluorene (PFO) have a strong potential in the field of OLEDs due to their high blue luminescence, which allows the development of red, green and blue light emitting diodes from efficient color conversion techniques. We present optical spectroscopic studies of these materials, which give insight into their structural properties. These structural properties play a key role in understanding the electronic and optical properties of these materials.