Electronic and Optical Materials

Transparent Electrode

Transparent electrodes are an essential element of numerous ubiquitous devices used by billions of people such as displays, photovoltaic and lighting. Today, tin-doped indium oxide (ITO) is by far the dominant material due to its optoelectronic performance. However, ITO has certain problems; (i) indium is becoming a scarce and expensive resource ;(ii) it exhibits serious technical issues (deposition techniques are expensive, quite inefficient and slow; ITO films are fragile, sensitive to corrosion and have a relatively high index of refraction). To solve these problem, we have studied metal nanowire/fiber, syntheiszed by template based electrodepsoition and electrospinning methods, and CNT based transparent electrodes.


Quantum Dot

Colloidal semiconductor nanocrystals, also termed "quantum dot", have attracted a great deal of attention on account of their quantum confinement effects. Their small size defined by an increasing band-gap accompanied by the quantization of the energy levels to discrete values. This effect is accompanied by an exaltation of the coulomb interaction between the charge carriers. The quantum dots (QDs) are expected to utilize display, LED, solar cell and biomedical labeling applications, using optical property depending on QD size.